TESTING EQUIPMENTVOLTAGE

MEDIUM & HIGH

WITHSTAND

VOLTAGE

SGM Series

Resonant Systems

The SGM series are used for generating high AC voltages at a fixed frequency (mainly 50 or60 Hz) by means of an excited variable reactor. Their main application is the voltagewithstand and partial discharge testing of highly capacitive loads. Due to their low inputpower requirement they are the most convenient on-site testing solution for large loads.Variable frequency systems are also available as an even more practical and economictesting solution for that purpose.

Highly capacitive test objects consist not only of cables and capacitors, but also largerotating machines, instrument and power transformers (withstand voltage), GISsubstations, among other loads. The SGM series allows for both HVAC tests at 50/60 Hz,and at lower and/or higher frequencies (20-300 Hz) providing a dynamic testing responseto test object voltage changes (e.g. capacitors). Thanks to its low distortion level, resonanttest systems are also well suited for partial discharge (PD) testing.

Systems available up to 2200kV 50A - Inductance1800kV 30A - Frequency

YDTW / YDTCW Series

Cylinder Type Transformer Systems

Conventional high AC voltage test transformers are specially designedfor factory testing (and in some cases, field testing) of objects with alow to mid-range capacitance.

These systems are particularly suitable for tests that require a stablevoltage level, even if the load changes during testing (objects with highpartial discharge levels, or subjected to high pollution) or when dealingwith inductive load types (potential transformers).

The ability to stack several of these transformers over one anotherallows reaching very high voltages while keeping the same floor spacerequirements compared to the large area occupied when using tanktype transformers.

Systems available up to 2150kV 50A

SEE ALSO: PARTIAL DISCHARGE TAN δ CAPACITANCE

TAN δCAPACITANCE

SG2008

Automatic Capacitance and Dissipation Factor Tan δPrecision Measuring Bridge

The automatic SG2008 bridge is designed to measure the electrical dissipationfactor tan δ and capacitance C of test objects within an environment with highlevels of electromagnetic interference, such as power plants or substations.

The SG2008 can also be used in the lab for high accuracy testing of: bushings,transformer windings (1/2/3 coils), shunt reactors, current transformers, voltagetransformers (CVT), circuit breaker capacitors, surge arresters and other electricalequipment.The SG2008 is an all-in-one device that includes: a precision digital bridge, a 12kV/200 mA power source, a standard capacitor (Cn), and other electronic circuits.An external power supply and standard capacitor can be added to extend itstesting rage.Its light weight allows it to be highly portable. Its operation is intuitive and simplethanks to its complete automation of all processes. Its high performance isguaranteed by the full digital processing of all information.

YL Series

SF6-filled High Precision Standard Capacitors

The SF6-insulated standard capacitor (Cn) is used together with a capacitance & tan δmeasuring bridge as a reference in comparison measurements of electrical equipment.It also can be employed as a high voltage capacitor in divider circuits with highaccuracy requirements.

The YL series capacitors have an over twenty years guaranteed and tested long-termstability. A wide range of different capacitances and voltage are available.

Capacitors available up to 1600kV, 20nF

QS Series

Semi-Automatic C, L & Tan δ /Cos ϕ High Precision Measuring Bridge

The QS series bridges are designed to determine -with the highest possible accuracy-the capacitance and dissipation factor of electrical insulating liquids and solids, cables,capacitors, transformers, generators, motors, bushings, etc. It also can be used formeasuring the power loss in shunt reactors or similar equipment.The QS bridge can perform semi-automatic measurements of dissipation factor tan δ,power factor cos φ, and capacitance. The QS series equipment has been designed as aaffordable, valuable instrument for test facilities, following the principle of a simpleoperation.

Range: Accuracy:Capacitance 3pF - 1000μF 0. 5% rdg ± 5 x 10-5

Tan δ 1x10-6 - 1x10-2 0. 5% rdg ± 5 x 10-5

ANALYZER

PARTIAL DISCHARGE

SG4008

Partial Discharge Detection and Measurement

The digital multichannel SG4008 partial discharge analyzer was developed by SAMGOR to include all the latest innovations in the PDmeasurement field. The SG4008 has a wide anti-interference range. You can collect data independently through its 2, 4 or 6 channels andshow it in the main display. On-screen information can be used to analyze partial discharge levels and patterns of the electrical equipmentunder test.

The system has several display options: conventional phase diagram, three-dimensional, frequency resolution graphs, etc. By adding anaudible tester the user can accurately determine the spatial location of partial discharges in test objects. This type of tester is widely usedto locate and detect partial discharges in test objects such as dry transformers, switches, circuit breakers, cable terminals and other variouselectrical equipment.

IMPULSE

HIGH VOLTAGE AND CURRENT

CDY Series

Impulse Voltage & Current Generator

The CDY series consists of Marx type generators that produce high voltage/current impulses. Inorder to simulate lightning and switching surges, impulse generators can have different designsdepending on their structure and energy level (S, E, L, M), guaranteeing the lowest inductancepossible in every design.

Applications include testing according to IEC 60060-1 and -3, ANSI, IEEE and other applicablenational electrical standards. The basic system can be adapted in numerous ways for specialtests and for greater ease of use, at the same time, these additional circuits and componentsoptimize the impulse test system to match the different requirements of all kind of high voltagetest objects. They can also be designed to produce 8/20μs impulse current waveforms requiredin surge arrester tests (including an inductor).

The CDY series generators are ideal for transportation and easy on-site assembly due to theirunique patented modular structure. Samgor also has its own design of mobile impulsegenerators that can be lifted on-site within minutes by means of a hydraulic mechanismavoiding otherwise valuable, time-consuming assembling maneuvers.

Systems available up to 7200kV 720kJ

TESTING SOLUTIONS

HIGH VOLTAGE

C U S TO M RETROFITS

UPGRADES

TRAINING MAINTENANCE

Transformers Cables Switchgears Bushings

Insulators Surge Arresters Mobile Testing

Systems

PD testing Impulse testing Transformer testing Compliance with national

and international testing Standards

T U R N K E YP R O J E C T S

Updates of HV test equipment from any brand, size and type

Testing power, voltage and current increase

Automation

HVPOWER

PCTS Series

Power Capacitor Test System

The PCTS Series (Power Capacitor Test System) are self-contained test setsincorporating all the required features for testing power capacitors. The PCTSsolution can be tailored to meet specific manufacturing line requirements,making testing MV & HV.

The PCTS has been designed with all these requirements in mind, in order toperform as a multifunctional tool for power capacitor testing. All supported testsare performed in conformity with GB/T 11024.1-2010 and IEC 60871-1-2014.

BUS BARS

HCTS Series

Heat Cycle Test SystemThe Heat Cycle Test System Series -HCTS- is designed to raise and control the temperature ofconductors such as cables and bus bars and other low impedance electrical conductors, inorder to simulate the thermal loading conditions found in electrical circuits with currentlevels up to 10,000A.

The HCTS Series are mainly used to heat the conductor up to temperatures as high as 150°Cusing the test object loop as an actual transformer secondary. Its working principle is basedon taking advantage of the short circuit impedance of this secondary. The current can becontrolled in order to maintain the required core conductor temperature. Measurement ofthe conductor temperature is made by means of a direct contact of insulated K-typethermocouple probes.

According to IEC and other related standards, during heat cycling tests, a high AC voltageneeds to be applied on the cable as well. In order to avoid the thermocouples fromcontacting the cable core at HV potential, a control temperature loop is used, which is notsubjected to the withstand voltage but only the induced current.

SEE ALSO: WITHSTAND VOLTAGE IMPULSE TESTING TAN (δ) & CAPACITANCE SG4008

CABLE &

DISTRIBUTION & POWER TRANSFORMERTESTING SETS

TTS TEST SYSTEM

DTTS - Distribution transformers / PTTS - Power Transformers

DTTS and PTTS test systems are independent test sets that include all the requiredfeatures for routine and type testing of transformers at distribution and transmissionlevels. The TTS can be completely designed to customer requirements for both laband on-site testing.Distribution and transmission transformers are high-quality products with strictrequirements stemming from their highly important role in the electrical power grid.They are required to have a high quality, be efficient, reliable and have a highperformance.The TTS can perform the following tests in either manual or totally automatedoperation: load-loss tests, temperature rise, withstand voltage, induced voltage tests,etc.The TTS systems can be automated according to customer needs and minimizemanual intervention to keep the duration of the tests of a single transformer withinthe shortest time possible. TTS are multifunctional tools of utmost value formanufacturers and labs. All tests are performed according to IEC, IEEE / ANSI, GB andGOST. All commercial power and voltage levels are available.

DTLTS Series

Automatic TTR, Resistance & Insulation tester

The SG7601/7602 is a digital recurrent source generatorwith the largest adjustable waveform range in the market. Itis the low voltage equivalent of an HV impulse generator.With only one stage its wide range of applications includemodel testing, research of voltage distribution in highvoltage windings during impulse voltage stresses and theestimation of the impulse circuit parameters for full HVimpulse test setups.

Its impulse voltage peak value can be adjusted in the 0-500Vrange with a 20 Hz frequency. Its output can be measured byany oscilloscope, or, by adding the SG7602, a 14 bitportable, windows 7-based waveform analyzer fitted with afriendly touch screen interface.

SG7601/7602

Recurrent Surge Generator

The DTLTS Series are a single connection, automatic TTR,resistance an insulation testers. Once all transformerterminals have been connected to the DTLTS, testing followsautomatically while all results are displayed on-screen andstored.

It can perform measurements in single and three-phasetransformers increasing throughput by significantly reducingstandard testing times, while being reliable and easy topoperate at the same time. Database configuration andmanagement as well as pass-fail criteria configurationfurther enhance its performance.

SEE ALSO: WITHSTAND VOLTAGE IMPULSE TESTING TAN δ & CAPACITANCE SG4008 SG7601 SG500X

MOBILE

TESTING EQUIPMENT

MOBILE AC RESONANT TEST SYSTEM(TUNABLE FREQUENCY)

The AC variable frequency resonant test system covers a very wide capacitive load range as required in thetesting of GIS, cables and other capacitive test objects. All technical requirements according to IEC 60060-1and IEC 60060-3 its performance is guaranteed within a range of approx. 10% to 100% its rated voltage.

Systems available up to 800kV and up to 8A

AC/DC HV TEST SYSTEM (CONTAINER TYPE)

The AC/DC HV TEST SYSTEM is ideal for on-site AC/DC voltage withstand testing of small capacitive equipment. Its container type layout enables its safe operation both in the factor and on-site

Systems available up to 200kV AC, 260kV DC

The MPTTS Series are used in the testing and diagnosis of single and three phase power transformers, based on the ANSI / IEEE C57.12.90 and IEC 60076 standards. The MPTTS lab can be used to evaluate and diagnose transformers both on-site and in factory settings, It can be used for routine testing, diagnosis, research, etc. Its semi-automatic operation and its real time report generation provide an user-friendly experience.

Systems available to test up to 30MVA, 35kV secondary transformers

MOBILE IMPULSE GENERATOR SYSTEM

MOBILE POWER TRANSFORMER TEST SYSTEM (MPTTS)

Traditional IVGs are testing systems that require on-site assembly and disassembly every time they are taken on-site . Our mobile IVGs are systems that require minimal assembly and can be ready to use on site within minutes thanks to their hydraulic erection system.

Systems available up to 1600kV, 160kJ

AMERICASOFFICIALREPRESENTATIVE

Av. Tres 603C Col. Santa Cecilia 25720Monclova, Coahuila, Mexico

Ph. +52 866 105 2949 / 177 46 46US. Ph. (512) 800 4861

e-mail: get@garzaelectrothermal.comwww.samgoramericas.com

www.garzalectrothermal.com.mx