Basics of Surge Protection - SITRAIN LMS

Basics of Surge ProtectionA quickSTEP Online Course

www.usa.siemens.com/step© Siemens industry, Inc.

© Siemens Industry, Inc. 2017

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Course Topics

Welcome to Basics of Surge Protection. This course covers the following topics:Chapter 1 - Introduction

• Overview• Surge Protection Concepts• Surge Protection Standards

Chapter 2 – Applications• Application Basics• Sizing Surge Protectors• Application Examples

Chapter 3 – Siemens Products• Integral Products• Wall-Mounted Products• Residential Products

Final ExamIf you do not have an understanding of basic electrical concepts, you should complete Basics of Electricity before attempting this course.

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Course Objectives

Upon completion of this course you will be able to…• Describe how surges affect today’s industrial, commercial, and residential electrical

systems and sensitive products powered by these systems• Explain why today’s electrical systems are incomplete unless they include surge

protection• Explain why the best way to protect a home or business is by “stopping the surge before

it gets in” through the use of incoming service entrance, hard-wired surge protective devices.

• Identify the five SPD locations associated with the S.O.L.I.D. acronym• Describe basic surge protector sizing concepts • Describe how surge protection can be employed in a variety of common industrial,

commercial, and residential facilities • List Siemens industrial, commercial, and residential surge protection solutions

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The Evolving Electrical World

The Internet of things era is fast approaching where everything in our home and workplace will be connected to the World Wide Web. This emerging set of technologies is projected to realize trillions in cost and energy savings and greatly improve our lives. The potential benefits achieved depend to a large extent on the quality of power delivered to these devices.

Designers of mission critical facilities have addressed this issue by hardening their electrical systems to one of the more frequently recorded electrical disturbance types, surges. These designers have abandoned the old practice of solely relying upon plug-in surge protector strips or bars. Instead, surges are stopped by strategically deploying hardwired surge protective devices (SPDs) throughout an electrical system.

This course reviews some power system basics and then focuses on effective surge mitigation practices.

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Power Transmission

For the most part, today’s electrical infrastructure hasn’t changed much in decades. Power plants generate electricity and transmit it through a network grid of overhead and underground transmission lines for delivery to commercial and industrial facilities and residences.

As electricity is transmitted, electrical disturbances are introduced by direct and indirect lightning strikes, capacitor bank switching, the operation of motors and other large loads, faults conditions, fuse operation, and other conditions.

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Electrical Disturbances

There are various types of electrical disturbances and a surge is only one type. Some of these disturbances are not at all like surges, but others have some surge characteristics and are sometimes mistakenly called surges.

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Power Transmission Disturbances

Before considering the type of electrical disturbance referred to as a surge, consider the following common electrical disturbances for which a surge protective device (SPD) does not provide protection.

A power outage is defined as a temporary loss of electric power. During an outage, current or voltage is present. Therefore, an SPD does not activate.

A voltage swell is defined by IEEE 1159 as an increase in RMS voltage to from 110% to 180% of the nominal voltage for a duration of from one-half cycle to one minute. When the swell voltage threshold exceeds 125% of the nominal voltage for a period greater than one-quarter cycle, an SPD could activate and pre-maturely wear out.

An undervoltage or sag, sometimes called a brownout, is a temporary drop in electrical voltage. An SPD cannot counteract the effects of an undervoltage regardless of the duration.

A variety of faults can occur in a power transmission system. Some faults can cause a significant overcurrent to flow. An SPD is not designed to mitigate system faults.

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What is a Surge?

A surge, sometimes called a spike, is a brief burst of voltage and current. As the bottom illustration shows, not all surges are the same, but the duration of the surge is minimal compared to the length one cycle of power.

Surges travel through the electrical wiring of your business or home. If not mitigated, surges ride on this path causing disruption, degradation, or damage to equipment.

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What Causes Surges?

Power surges that originate outside a business or home are referred to as “externally generated surges.” Those that originate inside a facility are referred to as “internally generated surges.” Externally generated surges are the most destructive and account for 30% of the surges seen in a typical commercial facility or residence. The most obvious, and dramatic, external surge source is lightning.

Lightning induced power surges are the least common source but, by far, the most destructive with the potential to instantly zap equipment. The most common source of externally generated power surges are those produced from the utility grid interactions.

Internally generated power surges come from a number of sources and account for 70% of the surges seen in most businesses and homes. Compressors found in air conditioners and refrigerators; pumps and motors; and even printers and copiers create smaller, lower-level power surges and electrical line noise. These surges may not harm equipment instantly, but due to the repetitive frequency, internally generate surges act like electronic rust causing equipment to prematurely wear out.

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Electrical Systems are Incomplete Without SPDs

Traditional surge protection practices consisted of plugging equipment into a surge plug strip or power bar. However, because nearly everything we use in the home and at work contains electronics, reliance solely upon surge plug strips is not sufficient.

Over time, through trail and error, design engineers developed practices to “stop surges” before they get into an electrical system. This practice requires the hardwiring of surge protective devices (SPDs) at the service entrance and at key distribution points within the system.

In addition, while SPD performance and robustness are important factors, SPD SAFETY must be the FIRST priority.

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Surge Protective Device Basics

While the subject of surge protection can be complex, the protective action of a surge protective device (SPD) is relatively simple. In some respects SPD protection operation is analogous to protective action of a hot water heater’s pressure relief valve. When pressure builds up, the pressure relief valve opens diverting the excess water pressure to a floor drain. Once the pressure subsides, the valve closes.

In a similar fashion, when a surge occurs in an electrical system protected by an SPD, the SPD provides a path to ground for the momentary excess of electrical energy.

The pressure relief valve on a water heater provides a valuable service at a fraction of the cost of the water heater itself. So it would not make sense to buy a water heater without a pressure relief valve. Similarly, SPDs reduce the potential for damage to expensive equipment at a small fraction of the cost of the equipment they protect.

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Chapter 1 – Introduction

This chapter covers the following topics:

• Overview

• Surge Protection Concepts

• Surge Protection Standards

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Surge Characteristics

Before understanding how to mitigate surges, it is important to examine surge characteristics, which can be broken down into three components.

High Current – Lightning and other external surge sources are capable of injecting a high current into an electrical distribution system. For example, it is common for lighting strike currents to reach magnitudes from 18 kA to 30 kA, and although extremely rare, strikes can reach 100 kA.

High Voltage – When surge current is injected or induced into an electrical system, Ohm’s law comes into play causing a proportionally high surge voltage to be generated.

Short Duration – Surges are brief bursts of energy lasting for just a few millionths of a second. This is still enough time to exceed load equipment’s component breakdown voltage level causing considerable damage or disruption.

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How Much Can Get In?

When a surge enters a facility through one of the incoming phases, the surge current has a correspondingly high surge voltage driving the current into the facility.

As this voltage exceeds approximately 10 kV, the air between service entrance equipment bus bars ionizes and flashes over resulting in a momentary short between bus bars. The surge energy entering the system is dissipated in the flashover event and only a smaller surge remnant propagates downstream. This is the same phenomenon that happens during a thunderstorm when surges flashover at a utility substation causing the lights in your home to flicker.

The surge current associated with a 10 kV surge may reach 10 kA having its greatest magnitude at the point of injection. As the surge propagates away from the point of injection, the impedance of the electrical system causes the surge current to diminish. This is not the case for surge voltages. Due to transmission line effects, surge voltages maintain full magnitude from the service entrance to receptacle locations.

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Voltage Protection Requirements

When evaluating how much surge voltage is considered safe for equipment, consider the voltage tolerance graph developed by the Information Technology Industry Council (ITIC).

This graph shows that for the short duration of a surge, up to 100 microseconds, 120 VAC electronic equipment is capable of handling up to 500% of its rated peak voltage without being disrupted or damaged. For 120 VAC (169.7 Vpeak) equipment, this corresponds to approximately 850 Vpeak. This limit provides a useful guideline in evaluating an SPD’s protection capabilities. An SPD designed to surge protect 120VAC equipment should have a voltage protection rating that is below 850 V.

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Surge Protective Devices

An SPD protects an electrical system by diverting surge currents to ground while equalizing surge voltages to safe levels. This protective action is accomplished by the SPD’s core surge protective elements, which are metal oxide varistors (MOVs).

MOVs are semiconductor devices that function as voltage sensitive resistor. Installed between paired conductors and system reference (neutral and/or ground), MOVs monitor system voltages. As surge voltages increase exceeding the MOV’s trigger or bias voltage, the MOV responds in just a few nanoseconds, switching from its normal open circuit standby impedance (109 Ohms) to a near short circuit. This protective action diverts harmful surge currents back to neutral or ground. At the same time while the current is being diverted through the MOV, surge overvoltage is being suppressed or clamped in an attempt to equalize the surge overvoltage.

MOVs come in a variety of sizes. The bigger the MOV, the more surge current it can handle. Also, SPDs constructed using larger diameter (greater than 32mm) MOVs are better suited for commercial applications where larger available fault currents can occur. This is due to the ability of larger diameter SPDs to remain intact longer during fault conditions. Remaining intact longer, allows an SPD’s internal coordinated safety controls to clear safely, disengaging the suppressor from the electrical system.

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MOV Operation

MOVs are combined within an SPD to efficiently surge protect all the of the electrical system’s paired conductors (L-N, L-G, N-G, and L-L). An SPD’s protective operation can be better understood by reviewing an SPD circuit model response before, during, and after a surge event.

Before a surge, the MOV’s impedance is very high allowing the full open circuit voltage to go to the load.

During a surge, the rising edge of the surge voltage pulse reaches and exceeds the MOV’s maximum continuous operating voltage (MCOV) causing the SPD to switch to a low impedance (short circuit) state, diverting the surge current to ground or neutral and away from the load. The surge overvoltage diverts through the SPD as energy is transferred to other side of MOV, knocking the surge voltage down to a safe level.

Once the falling edge of the surge voltage pulse goes below the MCOV rating, the MOV resets returning to its high impedance standby protective state, waiting for next surge event.

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SPD Safety Blind Spots

Surge overvoltages are not the only overvoltage an SPD will sense. Electrical disturbances like missing neutral-to-ground bonds, loss-of-phase, and line-to-ground faults can introduce sustained overvoltages into an electrical system. SPDs attempt to control these events, but because they are sustained, the SPD will reach end-of-life prematurely. In fact, sustained overvoltage is the number one cause of SPD failure. If SPDs do not deploy fully coordinated fault current protection, end-of-life may look a little crispy as seen in the photos.

Relying solely an SPD’s safety listing is not foolproof because there are various types of SPDs. Considering a ‘listed’ SPD is the first step in selecting an SPD, but further scrutiny is necessary to avoid complications, especially when surge protecting commercial and industrial facilities. SPD designs focused on containment, spark gap protection, or containment combined with external fault current protection have their merits.

Siemens found that consistent fault current protection is achieved through the use of TPMOV surge protection technology. This technology is field-proven, demonstrating fault current coordination from near 0 A all the way to 200 kA short circuit current. All of our residential and commercial SPDs share the common theme of ‘Safety First’. We have found this design approach maximizes protection without compromising system integrity.

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Chapter 1 – Introduction


• Overview

• Surge Protection Concepts

• Surge Protection Standards

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Standards for Low Voltage SPDs

While it is not the intent of this course to provide a detailed lesson on SPD standards, some discussion of these standards is necessary.

Several standards cover low voltage (up to 1000 V SPDs. The following standards are notable.

UL1449 4th edition, which builds upon 3rd edition, covers five SPD types and provides important performance and safety testing information.

CSA mirrors UL 1449 4th edition, providing additional SPD information relevant to Canadian safety practices. CSA regulates SPDs under C22.2, No.269.1-14, 2-14, 3-14, 4-14, 5-14 standards.

National Electrical Code Article 285 covers general installation requirements for permanently installed low voltage SPDs. Beginning in 2008, the NEC adopted UL1449’s SPD type designations to harmonize suppressor terminology industry-wide. Previous NEC editions of the NEC distinguished transient voltage surge suppressors from surge arrestors.

IEEE C62 is considered the bible of surge suppression standards, providing details concerning the impact of surges on electrical systems and recommending testing protocols for low voltage power SPDs.

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UL 1449

UL developed the initial version of UL 1449, also referred to as ANSI/UL 1449, in 1985 to introduce uniform testing of low voltage SPDs (originally referred to as transient voltage surge suppressors or TVSSs). This first edition was developed before the proliferation of SPDs and was based on a more limited understanding of SPD safety considerations.

UL 1449 has since been revised based on a clearer understanding of the issues. The 4th edition of this standard addresses the following issues that merit further discussion in this lesson.

The current edition clarifies terminology for low voltage SPDs, previously referred to as transient voltage surge suppressors or surge arresters, into four SPD type designations.

The current edition also tests SPDs for nominal discharge current (In) and replaces the previous edition’s suppressed voltage rating (SVR) with a voltage protection rating (VPR) based on a measured limiting voltage test.

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Nominal Discharge Current Test

The nominal discharge current test requires an SPD to be functional after being hit with repetitive impulses of a current with a specific wave shape and duration. The peak value of this current is the nominal discharge current (In).

Every SPD’s protection mode (L-N, L-G, N-G, and L-L) is tested, including any required connection to overcurrent protective devices. Between impulses, the SPD is energized at its maximum continuous overvoltage (MCOV). The test format tends to cause heat accumulation, which makes this test much more rigorous than immediately apparent. Type 1 SPDs are tested at 10 kA or 20 kA and Type 2 SPDs are tested at 3 kA, 5 kA, 10 kA, or 20 kA. SPDs designated with a nominal discharge current equal to 20 kA should be selected for most applications, including mission critical environments.

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Voltage Protection Rating

Another critical SPD performance benchmark test conducted according to UL 1449 4th edition is the measured limiting voltage test . This test subjects an SPD to three consecutive 3000 A, 6000 V pulses. This test is used to determine the voltage protection rating (VPR) for the SPD. Comparing voltage protection ratings is a useful method in evaluating the effectiveness of various SPDs for selected applications.

It is important to note that, instead of a Voltage Protection Rating, UL 1449 2nd edition required a less rigorous test to determine a suppressed voltage rating (SVR). Because of the significant differences in testing, the SVR is not equivalent to the VPR.

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NEC® Article 285

In 2008, the National Electrical Code (NFPA 70) included Article 285 to govern the safe installation of TVSSs (now SPDs). Article 280 now covers arresters installed in circuits with voltages greater than 1 kV.

Article 285 covers SPDs permanently installed in circuits of 1 kV or less and has been revised to harmonize suppressor designations utilized within UL 1449. As a result, this article now includes SPD type designations with older TVSS or surge arrester designations shown in parenthesis; for example: Type 1 SPD (surge arrester).

Unlike UL 1449, however, the NEC is intended to provide general installation guidelines rather than testing requirements. This means, for example, that while NEC Article 285 requires SPDs to be “listed devices” with a short-circuit current rating, the process of listing and testing is left up to the testing organization. In the U.S., the testing organization is most often UL.

In addition to requiring SPDs to have a short-circuit current rating (SCCR), NEC Article 285 also requires that this rating be equal to or greater than the available fault current at the point where the SPD is applied. Applying an SPD onto an electrical system where the available fault current exceeds the SPD’s SCCR could result in an SPD that will fail or wear out in a manner that would disrupt power or become a safety hazard. Page 1-26


NEC® Articles

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With each NEC update, the National Fire Protection Agency has adopted articles mandating the installation of SPDs. The reasoning was due to the fact that surge protected electrical systems tend to be more reliable than systems that are unprotected. NEC articles mandating SPD installation are summarized below.

NEC 2011, Article 708.20D Critical Operations Power Systems – Surge protective devices shall be provided at all facility distribution voltage levels.

NEC 2014, Article 700.8 Emergency Power System (Renumbered to 645.18 for 2017 edition) – Voltage surge protective devices (SPD’s) are required to be installed for all switchboards and panelboards of emergency systems.

NEC 2017, 620.51(E) Surge Protection – Where any of the disconnecting means in 620.51 have been designated as supplying an emergency system load, surge protection shall be provided. Examples include: elevator, dumbwaiter, escalator, moving walk, platform lift, or stairway chairlift, etc.

NEC 2017, 670.6 Surge Protection – Industrial machinery with safety interlock circuits shall have surge protection installed.

NEC 2017, 695.15 Surge Protection – A listed surge protective device shall be installed in or on the fire pump controller.


CSA C22.2, No.269.1-14, 2-13, 3-14, 4-14, 5-14

CSA standard C22.2, No.269.1-14, 2-13, 3-14, 4-14, 5-14, is the Canadian SPD standard that mirrors UL 1449. What differs is the dedicated standard section for each SPD type.

Due to standards agency agreements, CSA and UL can evaluate SPDs to 1449 and CSA C22.2 No. 269. When UL evaluates an SPD to CSA standards, SPDs successfully compliant to C22.2 No. 269 are assigned a cUL listing along with the device’s UL 1449 list.

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IEEE C62

IEEE C62.41.1, C62.41.2, and C62.45 (2002) are also important surge protection references. Among other things, these documents describe a facility’s surge exposure and identify surge pulse shape and magnitude. Surge characteristics are further broken down into three components: high current, high voltage, and short duration.

An important topic these IEEE publications address is surge magnitudes entering from the main electrical service travelling through the system to remote receptacle locations. As surges travel farther away from the incoming electrical service, surge current lessens due to impedance attenuation. Because surge magnitudes depend on the distance from the incoming service, IEEE standards divide facility surge exposure locations into the following categories.

Category C – Secondary side of the service transformer drop to the line side of the main overcurrent protection device. This is a critical location to apply surge protection in in order to “stop external surges before they get in.”

Category B – Load side of the main overcurrent protection device to distribution panels

Category A – Branch and receptacle locations. Page 1-29


Siemens Transient Protection Systems

Siemens Transient Protection System (TPS) family of SPDs include a host of safety controls that work together to help prevent unacceptable end-of-life operations. When the TPS family first launched, they were one of the few suppressors on the market offering multi-layered safety mechanisms like Ceramgard , TranSafe circuitry (coordinated fusing and thermal cutouts), dielectric isolation, and integrity taping are some of the innovations we developed that combine to keep system safe, reliable, and protected.

When other manufacturers’ SPD designs became obsolete due to inadequate safety controls, Siemens TPS protectors passed each new UL 1449 safety regulation without modification.

Siemens current generation of TPS3 SPDs carries on the same safety legacy transitioning from our TranSafe design to one incorporating TPMOV technology, in essence, integrating coordinated fusing and thermal protection into a singular element.

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Chapter 2 – Applications


• Application Basics

• Sizing Surge Protectors

• Application Examples

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Are Plug Strip SPDs Enough?

Do plug strip SPDs provide sufficient protection? The answer is a resounding no. For one thing, many devices that contain electronic circuits are not plugged into an SPD. For example in the home, LEDs, furnaces, central air conditioners, large appliances, and many other devices are often left unprotected. In the workplace, the list of unprotected devices with sensitive circuits is even greater.

The most effective way to defend against damaging surges is by hardwiring SPDs throughout the electrical distribution system. When installed at service entrance and downstream electrical panels, hard-wired SPDs safeguard ALL the distributed circuits supplied from these panels.

Ideally, every electrical panel should be surge protected. However, this may not be practical or feasible. Proven surge protection practices do not have to be complicated or costly. All you need to do is address the following questions:

1. Where should hardwired SPDs be installed on the electrical system?

2. What size and type SPD should be used?

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S.O.L.I.D. Surge Protection

A few years back, the U. S. Commerce Department published a little known surge protection practice guide titled “Surges Happen!” It suggests that the most efficient way to surge protect a home is by applying hardwired SPDs at the electrical and communications service entrances. Additional hardwired suppressors were recommended to prevent back fed surges that could bypass the primary electrical service protector. Also, localized SPDs like plug-in protectors were recommended to mitigate residual effects and to condition internally generated surges.

Applying SPDs at these installation points will cover most surge paths entering the home, but does this cover all home scenarios? What about businesses? If both electrical systems are examined, five common SPD installation points can be identified. Applying surge protection at these points maximizes a facility’s surge immunity. These locations can easily be identified by using the following acrostic, “The best surge protection installation is a S.O.L.I.D. one.” Page 2-3


S = Service Entrance

The largest surges are those entering at the electrical service point entrance for a home or business. The most common externally generated surge results from lightning. Less common surges result from capacitor bank switching and the actions of other types of utility equipment.

Left unabated, surges enter through the main service, damaging electronics, appliances, and equipment as they propagate along multiple circuits. By applying hardwired SPDs at the service entrance, you Stop Surges Before They Get In and provide crucial protection for all downstream circuits.

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O = Outside Loads

Applying hardwired surge protection at the service entrance stops utility distribution sourced power surges. However, this will not prevent surges that are back fed from loads outside the home or business. In some instances, the main electrical service provides power for a nearby distribution panel that feeds external loads. These outside loads are exposed to the elements and at risk for direct and indirect lightning strikes which could back feed a surge into the system, bypassing the service entrance SPD.

Examples of this are distribution panels powering external lighting, remote metering, parking lot lights, pool or well pumps, remote shelters and other exterior loads.

Applying SPDs at these commonly over looked distribution locations guards against blind spots in your surge protection plan.

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L = Lower Voltage Distribution Panels

In a typical commercial application, multiple system voltages are present. Higher system voltage SPDs suppress surges to safe levels for the system voltage they are protecting. However, the residual suppressed voltage could be high enough to damage or disrupt electronic loads powered from a lower system voltages. To protect electronics, lower system voltage SPDs should be applied at critical panels reducing residual surge voltages to safe levels. In addition, the electronic rust effect associated with internally generated surges will now be addressed through the application of lower voltage SPDs.

For example, a data center may have a 480Y/277V utility service. SPDs applied at this system voltage condition surge voltages and currents to protect 480Y/277V loads. However, the residual surge traveling down stream could still be high enough to damage 208Y/120V loads. Thus, system voltage specific SPDs should be applied at critical 208Y/120V panels to ensure electronic loads are protected as well.

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I = Individual Critical Equipment

When implementing facility-wide or whole house surge protection, proven redundancy practices should be implemented when surge protecting vital or mission critical equipment. Most of the time this entails hardwiring SPDs at or on the circuit powering this equipment.

When service or distribution SPDs reach end of life either through repeated surge activity or through premature failure due to electrical disturbance exposure, critical equipment should be protected with a localized individual SPD as back up protection when these primary service entrance or distribution SPDs go offline. In addition, individual suppressors guard against surges entering the electrical system through unprotected “blind spots.”

Examples range from hardwired SPDs at vital medical equipment such as an MRI machine to simply providing a surge protected plug strip for personal computers or home theatre systems.

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D = Data, Telephone, and Coax Lines

The previous recommendations in this lesson covered business or home electrical system surge protection applications. To complete the facility surge protection plan, communication SPDs should be installed paralleling power system practices.

Since our communications systems are predominately copper or metal lines, they are just as susceptible as power lines to lightning and utility induced surges as are power lines.

You can protect known power entry ports, but, if communication points are not addressed, your facility or home remains vulnerable to surges entering through the communication system “blind spots.”

Surge protecting communication systems follow the same practices as previously discussed:

1. Apply SPDs at the incoming communication service.2. Apply SPDs at downstream communication locations.

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Sizing SPDs

Once you’ve identified S.O.L.I.D. SPD locations, what SPD performance parameters should you look for?

A surge protector’s main function is to clip off surge voltages to safe levels and at the same time divert harmful surge currents away from your electronics and electrical loads. When evaluating SPD data sheets, both of these functions are referenced as Voltage Protection Ratings (VPRs) and Surge Current Ratings, respectively. However, selecting surge protection using just these parameters to properly size an SPD is insufficient. You also need to include safety and redundancy parameters as part of the selection criteria.

In this section, covers the following five key SPD performance parameters that are essential in selection process.

• Safety Regulation• SPD Type• VPR• Surge Current Rating• Modes of Protection

Using these performance parameters as well as our S.O.L.I.D. SPD installation locations provides you with the confidence that the electrical system will be hardened against surge intrusion. Examples of representative commercial and residential facilities are included to demonstrate how best to surge protect these facilities using these parameters.. Page 2-10


SPD Safety & Type

When selecting any SPD, the most fundamental criterion one needs to confirm is the device’s listing. Is it “listed” to ANSI/UL 1449 4th edition and/or CSA C22.2 No. 269 standards. Some may claim to be UL 1449 “compliant,” but this does not mean the SPD was safety evaluated and ‘listed’ to UL 1449 4th edition.

Safety listing can be verified by visiting UL.com, and clicking on “Certifications.” In the UL Category Code field, type in the UL 1449 4th edition product category code “VZCA” for external or wall-mounted SPDs or “VZCA2” for integrally-mounted SPDs. Then click “Search,” which will bring you to a new page of UL 1449 4th edition listed suppliers.

Once you click on a supplier, you will see a list of the supplier’s UL listed SPDs along with a summary of performance ratings associated with the SPD. For hardwired SPDs, the safest, most robust ratings are those listed as either “Type 1 or 2” having an I-n rating of 20 kA constraints. One example of this is trying to apply a Type 2 SPD, which requires additional, external overcurrent protection, to a fully populated panelboard. Quite simply, this will not work. To avoid this and other complications, utilize a Type 1 SPD which has all safety controls housed within the unit itself.

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Voltage Protection Rating

Another performance parameter listed on UL.com is the SPD’s Voltage Protection Rating (VPR). Every UL 1449 4th Edition listed and CSA C22.2 No. 269 SPD is subjected to 6000 V and 3000 A simulated lightning strikes. The residual, let through, or clamped voltage an SPD allows to pass through is measured from leads extending six inches from the SPD enclosure. The hard measurement is then rounded up to the nearest UL VPR category. For example, an SPD measuring 514 V will show a published VPR of 600 V on UL.com.

So what VPR rating should you select?

Choose SPDs with the lowest VPRs for the system voltage being protected. For instance, in reviewing the ITI (CBEMA) voltage tolerance curve for 120 V equipment, it suggests that 120 V electronic equipment can withstand surge voltages up to 850 V. Therefore, VPRs less than 850 V are suitable to protect 120V systems.

As a general rule, an SPD with a lower VPR offers better surge protection.

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Surge Current Ratings

When selecting an SPD’s surge current rating, redundancy is of greater importance than sizing solely based on exposure to thunderstorm activity.

For SPD surge current sizing, Siemens TPS3 devices use parallel TPMOVs, as shown in the accompanying graphic. To enhance safety, Siemens TPS3 devices only use 32 mm TPMOVs with surge current capabilities of 50 kA each. The number of parallel SPDs employed depends on the required protection. In four-wire “Y” or split-phase systems, electrical system surge entry paths are L-N, L-G, N-G, and L-L modes.

Using parallel redundant design practices, Siemens considers the surge current ratings shown in the accompanying graphic suitable to surge protect most commercial or industrial facilities. The largest surge current redundancy begins at the incoming service. Due to inherent system impedances, the residual surge energy reduces as it travels further away from the point of surge injection. This reduces the need for increased SPD redundancy for downstream protection applications, which is reflected in the recommendations. Page 2-13


Modes of Protection

When dealing with lightning, the path for surge entry into electrical systems is not easy to predict, but most commercially available surge protective devices provide standard modes of protection. This means that SPDs designed to surge protect a four-wire “Wye” or split-phase system include directly-connected TPMOVs connected across phase-to-neutral (L-N), phase-to-ground (L-G), and neutral-to-ground (N-G). Line-to-line protection is indirectly provided via the TPMOVs connected line-neutral-line and line-ground-line.

Some designers want added assurances that surges propagating between the phases will be surge protected with directly-connected surge protected elements. This is accomplished by specifying “true 10-mode” (Wye Systems) or “true 6-mode” (Split Phase) surge protective devices.

As shown in the accompanying illustration, a true 10-mode SPD protects a wye system using TPMOVs that are directly-connected across all of the paired conductors of a wye system. A “true 10-mode” SPD ensures that all possible electrical surge paths are covered by directly-connected surge protection elements. This feature is only available for split-phase or four-wire “wye” configured SPDs.

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Virtual Instructor-led Learning

Siemens virtual instructor-led courses offer you a live, classroom experience with the convenience and cost savings of online learning. These courses provide hands-oninstruction and live interaction, delivered anywhere an internet connection is available.

Scheduled courses are typically 10-hour agendas presented Monday through Friday in two-hour sessions. These sessions provide you with lecture, demonstration, lab exercises, and Q&A sessions – all presented by Siemens subject matter experts.

For the full course duration, you can complete assignments and reinforce classroom instruction using a virtual cloud-based application providing 24/7 access to fully functional Siemens software such as SIMATIC STEP 7 and PLCSIM.


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Page 2-16


Applying SPDs

Following the S.O.L.I.D. SPD placement guidelines as well as our SPD sizing rules, surge protecting any type of facility, including airports, schools, water treatment plants, residences, etc., becomes a simplified process.

The following design guide breaks down electrical systems of the previously mentioned facility types as well as other common structures identifying S.O.L.I.D. system and equipment locations where appropriately-sized Siemens TPS3 SPDs should be installed.

The recommended SPD sizes are based upon over 25 years of tracking construction projects across the county. We record average surge current capacities consulting engineers have specified, and these values are what was used to develop our S.O.L.I.D. recommendation.

Page 2-17


Airport

Service Entrance – Applying surge protection at the incoming electrical service “Stops Surges Before They Get In.” These types of surges require 300 kA or more of surge current redundancy.

Outside Loads – Install SPDs at distribution panels feeding remote hangers, security shelters, parking lot lights, etc. to prevent back feeding surges to the main terminal.

Lower Voltage Panels – If the terminal is supplied with a higher system voltage (i.e. a 480Y/277V service), 120 V panels need SPDs to condition residual surges leaving the service entrance SPD as well as any internally generated surges. Examples include panels powering security systems, flight status terminals, point of sale equipment, or other panels powering sensitive, electronic-rich loads.

Individual Critical Loads – Even if surge protection is applied at the previously listed locations, redundant protection may be warranted for sensitive, costly equipment. This may include baggage scanning equipment, chillers, and drives.

Data – Security, fire alarm, and telephone systems using copper communications lines need protection especially for communication circuits running between separate buildings or runway signal controls. Page 2-18


Automotive Plant


Outside Loads – SPDs should be installed at distribution panels feeding remote assembly facilities or warehousing, parking lot lights, etc. to prevent back feeding surges to the main building.

Lower Voltage Panels – If the facility is supplied with a higher system voltage (i.e. a 480Y/277V service), 120 V panels need SPDs to condition residual surges leaving the service entrance SPD as well as any internally generated surges. Examples include panels powering R & D labs, data centers, or any other panels powering sensitive equipment.

Individual Critical Loads – Even if surge protection is applied at the previous locations, redundant protection maybe warranted for sensitive, costly equipment. This may include robotic assembly equipment, conveyors, machining equipment, etc.

Data – Security, fire alarm, and telephone systems using copper communications lines need protection especially for communication circuits running to and from between assembly plants and communication lines. Page 2-19


Broadcast Facility


Outside Loads – SPDs should be installed at distribution panels feeding remote transmitter shelter, nearby antenna controls, parking lot lights, etc. to prevent back feeding surges from entering the main building.

Lower Voltage Panels – If the facility is supplied with a higher system voltage (i.e. a 480Y/277V service), 120 V panels need SPDs to condition residual surges leaving the service entrance SPD as well as any internally generated surges. Examples could be panels powering master control switchers, digital keyer, or any other panels powering sensitive, electronic-rich locations.

Individual Critical Loads – Even if surge protection is applied at the previous locations, redundant protection maybe warranted for sensitive, costly equipment. This may include audio-visual equipment, chillers, etc.

Data – Security, fire alarm, and telephone systems using copper communications lines need protection especially for computerized equipment. Page 2-20


Hospitality Facility


Outside Loads – SPDs should be installed at distribution panels feeding rooftop air conditioning equipment, remote conference rooms, parking lot lights, etc. to prevent back feeding surges entering the main building.

Lower Voltage Panels – If the campus is supplied with a higher system voltage (i.e. a 480Y/277V service), 120 V panels need SPDs to condition residual surges leaving the service entrance SPD as well as any internally generated surges. Examples could be panels powering business centers, casinos, or any other panels powering sensitive, electronic-rich locations.

Individual Loads – Even if surge protection is applied at the previous locations, redundant protection maybe warranted for sensitive, costly equipment. This may include elevators, hotel room load centers, kitchen equipment, chillers, etc.

Data – Security, fire alarm, and telephone systems using copper communications lines need protection especially for communication circuits and elevator control circuits. Page 2-21


Hospital


Outside Loads – SPDs should be installed at distribution panels feeding rooftop air conditioning, remote garage, parking lot lights, etc. to prevent back feeding surges to the main building.

Lower Voltage Panels – If the facility is supplied with a higher system voltage (i.e. a 480Y/277V service), 120 V panels need SPDs to condition residual surges the leaving service entrance SPD as well as any internally generated surges. Examples could be panels powering labs, operating rooms, or any other panels powering sensitive, electronic-rich locations.

Individual Critical Loads – Even if surge protection is applied at the previous locations, redundant protection maybe warranted for sensitive, costly equipment. This may include CAT or MRI scanners, x-ray equipment, lab equipment, and other similar types of equipment.

Data – Security, fire alarm, and telephone systems using copper communications lines need protection especially for communication circuits running between buildings. Page 2-22


Large Office Building or Complex


Outside Loads – SPDs should be installed at distribution panels feeding rooftop air conditioning, parking lot lights, etc. to prevent back feeding surges to the main building.

Lower Voltage Panels – If the facility is supplied with a higher system voltage (i.e. a 480Y/277V service), 120 V panels need SPDs to condition residual surges leaving the service entrance SPD as well as any internally generated surges. Examples could be panels powering data centers, offices and retail, or any other panels powering sensitive, electronic-rich locations.

Individual Critical Loads – Even if surge protection is applied at the previous locations, redundant protection maybe warranted for sensitive, costly equipment. This may include elevators, data centers, chillers, etc.

Data – Security, fire alarm, and telephone systems using copper communications lines need protection especially for communication circuits and circuits connected to rooftop equipment. Page 2-23


Manufacturing Plant


Outside Loads – SPDs should be installed at distribution panels feeding remote warehousing, parking lot lights, etc. to prevent back feeding surges to the main building.

Lower Voltage Panels – If the facility is supplied with a higher system voltage (i.e. a 480Y/277V service), 120 V panels need SPDs to condition residual surges leaving the service entrance SPD as well as any internally generated surges. Examples could be panels powering in house data center, administrative offices, or any other panels powering sensitive, electronic-rich class locations.

Individual Critical Loads – Even if surge protection is applied at the previous locations, redundant protection maybe warranted for sensitive, costly equipment. This may include PLCs, CNCs, drives, control rooms, etc.

Data – Security, fire alarm, and telephone systems using copper communications lines need protection especially for computers and automation control circuits. Page 2-24


Retail Store


Outside Loads – SPDs should be installed at distribution panels feeding a portable generator, rooftop air conditioning, parking lot lights, etc. to prevent back feeding surges to the main building.

Lower Voltage Panels – If the store is supplied with a higher system voltage (i.e. a 480Y/277V service), 120 V panels need SPDs to condition residual surges leaving the service entrance SPD as well as any internally generated surges. Examples could be panels powering refrigeration, kitchens, or any other panels powering sensitive, electronic-rich locations.

Individual Critical Loads – Even if surge protection is applied at the previous locations, redundant protection maybe warranted for sensitive, costly equipment. This may include refrigeration and point-of-sale (POS) systems.

Data – Security, fire alarm, and telephone systems using copper communications lines need protection especially for communication circuits from servers to POS systems.

Page 2-25


Sports Complex


Outside Loads – SPDs should be installed at distribution panels feeding remote parking garage, parking lot lights, stadium lights, etc. to prevent back feeding surges to the main building.

Lower Voltage Panels – If the campus is supplied with a higher system voltage (i.e. a 480Y/277V service), 120 V panels need SPDs to condition residual surges leaving the service entrance SPD as well as any internally generated surges. Examples include panels powering security equipment, broadcast control centers, concessions stands, or other panels powering sensitiveequipment.

Individual Critical Loads – Even if surge protection is applied at the previous locations, redundant protection maybe warranted for sensitive, costly equipment. This includes stadium LED displays, chillers, and drives.

Data – Security, fire alarm, and telephone systems using copper communications lines need protection. Also, control circuits for escalators, elevators, and other controlled equipment. Page 2-26


School


Outside Loads – SPDs should be installed at distribution panels feeding remote parking garage, parking lot lights, stadium lights, etc. to prevent back feeding surges to the main building.

Lower Voltage Panels – If the campus is supplied with a higher system voltage (i.e. a 480Y/277V service), 120 V panels need SPDs to condition residual surges leaving the service entrance SPD as well as any internally generated surges. Examples could be panels power computer labs, auditoriums with audio-visual equipment, or any other panel powering sensitive equipment.

Individual Critical Loads – Even if surge protection is applied at the previous locations, redundant protection maybe warranted for sensitive, costly equipment. This may include data centers, audio/video equipment, chillers and drives.

Data – Security, fire alarm, and telephone systems using copper communications lines need protection especially for communication circuits running to and from separate buildings across the campus. Page 2-27


Water Treatment Plant


Outside Loads – SPDs should be installed at distribution panels feeding a remote parking garage, parking lot lights, stadium lights, etc. to prevent back feeding surges to the main building.

Lower Voltage Panels – If the plant is supplied with a higher system voltage (i.e. a 480Y/277V service), 120 V panels need SPDs to condition residual surges leaving the service entrance SPD as well as any internally generated surges. Examples could be panels powering dry polymer feed systems, odor control systems, or any other panels powering sensitive equipment.

Individual Critical Loads – Even if surge protection is applied at the previous locations, redundant protection maybe warranted for sensitive, costly equipment. This may include pump and process controllers.

Data – Security, fire alarm, and telephone systems using copper communications lines need protection especially for telemetry and SCADA circuits running between plant locations .

Page 2-28


Single Family Home

Service Entrance – Applying surge protection at the incoming electrical service “Stops Surges Before They Get In.”

Outside Loads – SPDs should be installed at remote workshops or guest houses, or at panels that supply external loads to prevent back feeding surges entering the main building.

Lower Voltage Panels – The standard 120 V service may supply control panels connected to equipment operating at lower voltages. These control panels need SPDs to condition residual surges leaving the service entrance SPD as well as any internally generated surges. Examples could be lighting control panels, home theater controls, or any other panel powering sensitive electronics.

Individual Critical Loads – Even if surge protection is applied at the previous locations, redundant protection maybe warranted for sensitive, costly equipment. This may include the use of plug-in surge protectors for audio-visual equipment.

Data – Security, fire alarm, telephone, and cable systems using copper communications lines need protection especially for incoming cable and telephone services.

Page 2-29


Multi-Family Housing

Service Entrance – Applying surge protection at the incoming electrical service “Stops Surges Before They Get In.” These types of surges contain the largest surge energy warranting 300 kA or more of surge current redundancy.

Outside loads – SPDs should be installed at distribution panels feeding a remote parking garage, parking lot lights, etc. to prevent back feeding surges entering the main building.

Lower Voltage Panels – If the campus is supplied with a higher system voltage (i.e. a 480Y/277V service), 120 V panels need SPDs to condition residual surges leaving the service entrance SPD as well as any internally generated surges. Examples could be panels powering residences, laundry facilities, or any other panel powering sensitive electronics.

Individual Critical Loads – Even if surge protection is applied at the previous locations, redundant protection maybe warranted for sensitive, costly equipment. This may include elevators, chillers and drives.

Data – Security, fire alarm, and telephone systems using copper communications lines need protection especially for communication circuits including elevator controllers.

Page 2-30


Solar Farm

Service Interconnect – Applying surge protection at the main utility electrical service interconnects “Stops Surges Before They Get In” to the photovoltaic (PV) modules or DC-to-AC converters.

Outside loads – SPDs should be installed at distribution panels powered from PV panels to prevent back feeding surges entering the main service interconnect.

Lower Voltage Panels – This may require surge protection to be installed within the PV combiner box. Siemens AC TPS surge protective devices can easily be reconfigured for DC services.

Individual Critical Loads – If surge protection is applied at the previous locations, redundant protection may be warranted for sensitive, costly equipment. This may include PV controllers, power monitors, etc.

Data – Security, fire alarm, and telephone systems using copper communications lines need protection especially for communication circuits including weather or seismic stations.

Page 2-31


Wind Farm

Service Interconnect – Applying surge protection at the service interconnect “Stops Surges Before They Get In” from the utility grid. The best location to apply surge protection is on the low voltage side of the 690V/20000V step-up transformer. SPDs installed at this location are recommended to include integral disconnects for ease of servicing.

Outside Loads – SPDs should be installed at distribution panels feeding nacelle control cabinets, inverters, etc. to prevent back feeding surges from entering the main building.

Lower Voltage Circuits – 120 V circuits need SPDs to condition residual surges leaving the service entrance SPD as well as any internally generated surges. Examples could be motor controllers, control panels, or other sensitive equipment.

Individual Critical Loads – If surge protection is applied at the previous locations, redundant protection maybe warranted for sensitive, costly equipment. This may include anemometer, obstruction lighting, etc.

Data – Security, fire alarm, and telephone systems using copper communications lines need protection especially for communication circuits including PLCs, modems, and PCs.

Page 2-32


Classroom Learning

Studies indicate that when students practice what they have learned in a classroom setting they retain 75% of the lesson, as compared with lecture-only settings wherethey retain just 20% of the lesson.

Our learning content is reviewed and approved by Siemens technical and operational experts to ensure compliancewith the highest industry, health, safety, and environmental standards. Siemens simulator workstations provide a safe and risk-free platform for job training, project testing, design engineering, and troubleshooting.

We combine technology and industry experience to deliver highly effective, customized learning programs.• Job targeted courses• Hands-on learning and skill building• System-level training approach• Extensive schedule of classes• Various media and course length options• On-site and custom courses• Multiple training center locations• Packaged services and products


Page 2-33


Chapter 3 – Siemens Products


• Integral Products

• Wall-Mounted Products

• Residential Products

Page 3-1


Siemens TPS3 – Hard-Wired SPD Solutions for Business and Home

It is essential to protect today’s electronic world against harmful surges. To achieve this, hard-wired surge protective devices are applied at five key installation points throughout an electrical system creating a S.O.L.I.D. surge protection barrier.

Siemens TPS3 family of commercial and FirstSurge residential surge protective devices share common performance parameters and they are offered in two configurations:

• Integral SPDs (designed into our distribution equipment)• External or wall-mounted SPDs

Page 3-2


Integral SPD Benefits

Siemens Integral TPS3 series incorporates UL 1449 4th Edition (2015), cUL/CSA SPDs factory-installed within our standard distribution equipment, utilizing optimal electrical system connections to minimize impedance losses. This results in the industry’s best “installed” Voltage Protection Ratings (VPRs) which, when combined with other industry-leading features, makes a S.O.L.I.D. SPD protected system virtually immune to power surges.

SPD Types

Isolated within their own compartment, MCC bucket, bus plug, or integrated within panelboards, integral TPS3’s are classified by UL and CSA as either Type 1 or Type 2 Listed or Component Assembly SPDs. Most TPS3 are listed to highest UL/CSA SPD robustness rating having a 20 kA L-N. Also, most SPDs products carry a 200 kA Short Circuit Current Rating (SCCR) meeting or exceeding NEC and CSA fault current withstand installation requirements.

Surge Current

Available surge current ratings range from 100 kA to 1000 kA to meet redundancy requirements for any facility ranging from high-end data centers to your home. These features, along with other soft innovations, make Siemens TPS3 products the best integral SPD offering available.

Page 3-3


Integral SPD Benefits (Continued)

SAFETY and RELIABILTY

Integral TPS3 products achieve a superior level of performance and safety through the integration of surge protection elements comprised of large block, individually-fused and thermally-protected 50 kA MOVs. This cutting edge technology integrates the safety benefits found in the patented TranSafe circuit used in our previous TPS generation within a more compact form factor.

TRUE or DISCRETE 10 MODE

Surge protection device redundancy beyond increased surge current capabilities is a growing requirement in today’s market, especially for government or mission critical applications. Siemens has responded with our TPS3 L6, L5, L2, and L1 products, which offer increased protection mode redundancy, providing a “True” or “Discrete” 10-mode configuration with the inclusion of directly-connected line-to-line TPMOVs.

Page 3-4


The Effect of Cable Length on SPD Effectiveness

When connecting hard-wired SPDs to electrical systems, protection is largely dependent upon the length of the phase, neutral, and ground connecting cables.

Studies have shown that connecting cable voltage drops could reach a value around 100 V per foot when exposed to a UL 1449 4th Edition VPR test pulse. This voltage drop is added to the SPDs VPR to calculate the installed clamped surge overvoltage seen by the load.

For 120 V wall-mounted installations, this means connecting cable lengths exceeding 2 or 3 feet could result in a clamped overvoltage that exceeds the ITIC/CBEMA voltage tolerance curve limit of 850 V. Exceeding this voltage limit could result in equipment damage or disruption.

Integral Siemens TPS3 SPDs eliminate cable length issues by delivering known and consistent installed clamp voltages below ITIC/CBEMA limits. The following pages cover specific features of our integral switchboard, MCC, busway, and panelboard TPS3 SPDs.

Page 3-5


TPS3 01 and TPS3 L1

For integral Type 2 (default) or Type 1 SPD applications requiring standard or increased redundancy from 100 kA to 300 kA, Siemens TPS3 01 and TPS3 L1 SPDs are replaceable module designs direct-bussed or with optional breaker feed within panelboards, dedicated MCC bucket, or bus plug in the following products:• Original P1, P2, and P3 panelboards• Switchboard distribution sections• tiastar motor control centers (six-inch bucket)• STP series bus plug for Sentron (SX) busway• Field-installed retrofit available for Original P1and S1 Panelboards

Beyond the key features identified in the accompanying graphic, the following items apply to every TPS3 01 and TPS3 L1:• Complete North American system voltage coverage • EMI/RFI filtering providing up to -50 dB attenuation from 10 kHz to 100 MHz• Large block, individually-fused, thermally-protected 50 kA MOVs• Every MOV is monitored, including N-G• Breaker feed (option “W”)• Busway applications (option “B”)• MCC applications (option “M”)

Standard monitoring features include:• LED indicators• Dry contacts (240 V, 5 A max.)• Audible alarm with silence switch and test button• Surge Counter

TPS3 01 and TPS3 L1 products carry a 10-year warranty.

Page 3-6


TPS3 01 and TPS3 L1 Catalog Numbers

The catalog number system for TPS3 01 and TPS3 L1 SPDs is shown below.

Page 3-7


TPS3 02 and TPS3 L2

For integral Type 2 (default) or Type 1 SPD applications requiring standard or increased redundancy from 100 kA to 300 kA, Siemens TPS3 02 and TPS3 L2 SPDs are replaceable module designs direct-bussed or with optional breaker feed within P1 Revised Panelboards.

Beyond the key features identified in the accompanying graphic, the following items apply to every TPS3 02 and TPS3 L2:

• Complete North American system voltage coverage • EMI/RFI filtering providing up to -50 dB attenuation from

10 kHz to 100 MHz.• Large block, individually-fused, thermally-protected 50 kA

MOVs• Every MOV is monitored, including N-G

Standard monitoring features include:

• LED indicators• Dry contacts (240 V, 5 A max.)• Audible alarm with silence switch and test button• Surge Counter


Page 3-8




Page 3-9


TPS3 05 and TPS3 L5

For integral Type 2 (default) or Type 1 SPD applications requiring standard or increased redundancy from 100 kA to 300 kA, Siemens TPS3 05 and TPS3 L5 SPDs are replaceable module designs located within a dedicated compartment in the following products:• P4 & P5 panelboards• (Canada - S5 & F2 Power panel and SMP, FC1, FC2)• Switchboard distribution sections

Beyond the key features identified in the accompanying graphic, the following items apply to every TPS3 05 and TPS3 L5:Complete North American system voltage coverage • EMI/RFI filtering providing up to -50 dB attenuation from

10 kHz to 100 MHz• Large block, individually-fused, thermally-protected 50kA

MOVs• Every MOV is monitored, including N-G• Rotary disconnect

Standard monitoring features include: LED indicators• Dry contacts (240V, 5A max.)• Audible alarm with silence switch and test button• Surge counter


Page 3-10




Page 3-11


TPS3 06 and TPS3 L6

For integral Type 2 (default) or Type 1 SPD applications requiring standard or increased redundancy from 100 kA to 500 kA, Siemens TPS3 06 and TPS3 L6 SPDs are replaceable module designs located within a dedicated compartment, bucket, or bus plug in the following products:• SB1, SB2, SB3 (FC1 and FC2 Canada), & Type RCS switchboards• Type WL low voltage switchgear• tiastar motor control centers (standard 12-inch bucket)• STP series bus plug for Sentron (SX) busway

Beyond the key features identified in the accompanying graphic, the following items apply to every TPS3 06 & TPS3 L6:• Complete North American system voltage coverage • EMI/RFI filtering providing up to -50 dB attenuation from 10 kHz to

100 MHz.• Large block, individually-fused, thermally-protected 50 kA MOVs• Every MOV is monitored, including N-G• Rotary disconnect• Busway applications (option “B”)• MCC applications (option “M”)

Standard monitoring features include:• LED indicators• Dry contacts (240V, 5A max.)• Audible alarm with silence switch and test button• Surge counter


Page 3-12




Page 3-13


Integral TPS3 09

Page 3-14

For integral Type 1 SPD applications requiring minimal surge current redundancy and diagnostics, Siemens offers the option to integrally-mount our breaker-fed TPS3 09 SPD in the following products:

• P1 and P2 panelboards• Field-installed retrofit available for P1 panelboards• STP series bus plug for Sentron (SX) busway

Beyond the key features identified in the accompanying graphic, the following items apply to every TPS3 09:

• Complete North American system voltage coverage• Large block, individually-fused, thermally-protected 50 kA

MOV’s• Every MOV is monitored, including N-G• Internal mounting (option “I”)

Standard monitoring feature:• LED Indicators

Optional monitoring features:• Dry contacts and audible alarm (option “D”)• Extended indicator light (option “E”)

TPS3 09 products carry a 10-year warranty.


Integral TPS3 15xxP and TPS3 L15xxP

For integral Type 2 (default) or Type 1 SPD applications requiring maximum surge current redundancy from 600 kA to 1000 kA, Siemens offers a “P” enclosure option for our TPS3 15 and TPS3 L15 dual replaceable module SPDs. This option swaps our standard NEMA 1/12/3R/4 wall-mounted enclosure for a NEMA 1 screw-cover, pullbox housing with an extended display that is integrally installed in the following equipment:• SB1, SB2, SB3, (FC1 and FC2 Canada), & Type RCS switchboards• Type WL low voltage switchgear• TIASTAR motor control centers

In addition to the key features listed in the accompanying graphic, the following items apply to every TPS3 15 & TPS3 L15: • Complete North American system voltage coverage • EMI/RFI filtering providing up to -50 dB attenuation from 10 kHz to

100 MHz• Large block, individually-fused, thermally-protected 50 kA MOVs• Every MOV is monitored, including N-G• Rotary disconnect

Standard monitoring features include:• LED indicators• Dry contacts (240 V, 5 A max.)• Audible alarm with silence switch and test button• Surge counter

TPS3 15 and TPS3 L15 products carry a 10-year warranty.Page 3-15




Page 3-16


How-to Video Library

This extensive library of short videos was created by our instructional experts to meet the real-world needs of industry, with all levels of experience in mind. By providingon-demand, how-to instruction in easy-to-understand bites, the How-to Video Library helps maintain the critical industrial and manufacturing knowledge and skills developed during instructor-led training courses. Videos are typically three-minutes long and conveniently available via any computer or mobile device with Internet access.

Learning begins once you’ve completed registration.• Start your subscription at any time. Videos are available

24/7/365.• Purchase one, three, six, or 12-month subscriptions by

technology or in one complete bundle.• Take advantage of our most-flexible option – ultimate

access with a full, one-year subscription.


Page 2-17







Page 3-18


TPS3 03

For Type 1 SPD Surge Arrestor replacement applications requiring standard surge current redundancy of 50kA, Siemens offers our TPS3 03 external or wall-mounted, compact SPD.


• Complete North American system voltage coverage • Large block, individually-fused, thermally-protected 50 kA

MOVs• Every MOV is monitored, including N-G (When N-G

option is ordered)• Standard compact NEMA 4X polycarbonate enclosure• DIN RAIL Mountable

Standard monitoring features:

• LED Indicator• Dry contacts & Audible Alarm (option “D”)

Optional feature:

• Neutral to Ground Protection (option “N”)


Page 3-19


TPS3 03DC

Designed to surge protect photovoltaic, wind turbine, or other renewable or DC system applications. The TPS3 03DC is a Type 1 SPD surge arrestor replacement providing standard surge current redundancy of 50 kA.


• Most common DC system voltages -300 V, 600 V, and 1000 V

• Modes of Protection: DC+ to DC-, DC+ to Ground, DC-to Ground

• Large block, individually-fused, thermally-protected 50 kA MOVs

• Every MOV is monitored• Standard compact NEMA 4X polycarbonate enclosure

Standard monitoring feature:

• LED Indicator

TPS3 03DC products carry a 5-year warranty.

Page 3-20


TPS3 09

For Type 1 SPD applications requiring standard surge current redundancy of 100 kA, Siemens offers our TPS3 09 external or wall-mounted, compact SPD.


• Complete North American system voltage coverage• Every MOV is monitored, including N-G• Standard compact NEMA 4X polycarbonate enclosure

Standard monitoring feature:

• LED Indicators

Optional monitoring features:

• Dry contacts & Audible Alarm (option “D”)• Extended indicator light (option “E”)


Page 3-21


TPS3 11

For Type 2 (Default) or Type 1 SPD applications requiring standard surge current redundancy of 100 kA, 150 kA, or 200 kA, Siemens offers our TPS3 11 external or wall-mounted, compact SPD.

In addition to the key features listed in the accompanying graphic, the following items apply to every TPS3 11:

• Complete North American system voltage coverage • EMI/RFI Filtering providing up to -50 dB attenuation from

10 kHz to 100 MHz.• Large block, individually-fused, thermally-protected 50kA

MOVs• Every MOV is monitored, including N-G• Standard NEMA 4X polycarbonate enclosure


• LED indicators

Optional monitoring features include:

• Dry contacts and audible alarm (Select 0ption “D”)


Page 3-22


TPS3 12 and TPS3 L12

For Type 2 (Default) or Type 1 SPD applications requiring standard or increased surge current redundancy from 100 kA to 500 kA, Siemens offers our TPS3 12 & TPS3 L12 single replaceable module external or wall-mounted SPDs.

In addition to the key features listed in the accompanying graphic, the following items apply to every TPS3 12 & TPS3 L12:


10 kHz to 100 MHz• Large block, individually-fused, thermally-protected 50 kA

MOVs• Every MOV is monitored, including N-G• Rotary disconnect• Multiple enclosure options


• LED indicators• Dry contacts (240 V, 5 A max.)• Audible alarm with silence switch and test button• Surge counter


Page 3-23




Page 3-24


TPS3 15 and TPS3 L15

For Type 2 (Default) or Type 1 SPD applications requiring maximum surge current redundancy from 600 kA to 1000 kA, Siemens offers our TPS3 15 and TPS3 L15 dual replaceable modules, external or wall-mounted SPDs.

In addition to the key features listed in the accompanying graphic, the following items apply to every TPS3 15 & TPS3 L15:


10 kHz to 100 MHz• Large block, individually-fused, thermally-protected 50kA MOVs• Every MOV is monitored, including N-G• Rotary disconnect• Multiple enclosure options


• LED indicators• Dry contacts (240 V, 5 A max.)• Audible alarm with silence switch and test button• Surge counter


Page 3-25




Page 3-26


Simulators

Engineered to provide a real-world experience, Siemens simulators are fully functional, ready-to-use systemsavailable in a variety of configurations.

System-level design makes the simulators an invaluable tool for program testing and debugging, reinforcing learning, shop floor troubleshooting, and more. With portable construction and hard-shell cases, they can be easily transported. Custom-built systems are also available.


Page 3-27







Page 3-28


FirstSurge

Siemens FirstSurge SPDs offer homeowners commercial class, point-of-entry surge protection in a compact, affordable package. FirstSurge SPDs are available in three surge current ratings allowing the homeowner to select the model that is appropriate based on the average annual frequency and severity of electrical storms.

FirstSurge SPDs can be used with any Siemens or competitor load center and can be installed at any time. A FirstSurge SPD must be connected to a dedicated 2-pole, 20 amp circuit breaker in the adjacent load center. The lead connections should be kept as short and straight as possible.

All three models are equipped with three-stage notification to simplify fault determinations. If the unit needs to be replaced, an audible alarm beeps, the green LEDs extinguish, and the red service light flashes.

An additional safety feature in all three models is ground reference monitoring which ensures that the neutral-to-ground connection in the adjacent load center is securely bonded. In the event of a faulty neutral-to-ground connection, the audible alarm beeps, the green LEDs remain lit, and the red service light flashes.

.Page 3-29


FSPHONE and FSPHONE 4X

Siemens FSPHONE is a 2-pair, hardwired surge protector for telephone, DSL or modem connected electronics in residential and light commercial applications.

FSPHONE protects against electrical power surges that can enter through the main telephone connection and is equipped with a fail-short device to permanently ground the telephone line in the event of a power cross. FSPHONE is designed for indoor applications or can be mounted inside another weatherproof enclosure for outdoor mounting applications.

Siemens FSPHONE4X consists of FSPHONE plus a weatherproof enclosure to facilitate indoor or outdoor applications. The enclosure is molded of temperature and humidity resistant thermoplastic to resist cracking and discoloration. The cover can be secured with a tie wrap or similar locking device.

Page 3-30


FSCATV

Siemens FSCATV shields coaxial-connected electronics in residential and light commercial applications against electrical transient damage, including lightning, from entering through the main cable connection.

FSCATV includes a section of coaxial cable with female to female splice for line-side application. The Siemens warranty covers product defects for 5 years. To have complete protection for your equipment, home, or business, it is important to protect AC power lines and all data lines connected to the equipment.

Page 3-31


Plug-in SPDs

As we’ve pointed out, the best way to surge protect your home or business is through the use of hard-wired surge protective devices, but does this render plug-in SPDs obsolete? No.

Plug-in SPDs offer localized redundant protection while providing additional outlets essential to the home environment/ work environment.

Just like hard-wired SPDs, plug-in types come with a variety of features and redundancy to meet your protection needs.

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SITRAIN® Training for Industry

Online Self-paced Learning – Programs with maximum flexibility so students can easily fit courses into their busy schedules

Virtual Instructor-led Learning - Classroom lectures delivered in the convenience of your home or office

Classroom Learning - Expert and professional instructors, proven courseware, and quality workstations combine for the most effective classroom experience possible at your facility or ours

How-to Video Library - Quick, affordable, task-based learning options for a broad range of automation topics for training or purchase

Simulators - World-class simulation systems available for training or purchase


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SITRAIN World

From the basics to advanced specialist skills, Siemens SITRAIN courses deliver extensive expertise directly from the manufacturer and encompass the entire spectrum of Siemens Industry products and systems.

Worldwide, SITRAIN courses are available in over 200 locations in over 60 countries.

For additional information including a SITRAIN world map and SITRAIN contacts worldwide: http://sitrain.automation.siemens.com/sitrainworld/Default.aspx

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Course Completion

This course covered the following topics:

Chapter 1 - Introduction• Overview• Surge Protection Concepts• Surge Protection Standards

Chapter 2 – Applications• Application Basics• Sizing Surge Protectors• Application Examples

Chapter 3 – Siemens Products• Integral Products• Wall-Mounted Products• Residential Products

This course has covered the topics shown on the left. Thank you for your efforts. You can complete this course by taking the final exam and scoring at least 70%.

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Date post:	16-Nov-2021
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Basics of Surge Protection - SITRAIN LMS

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