Switchgear Systems Ltd. Tel: 01788 577399 Fax: 01788 577899 E-mail: [email protected]Automatic transfer switch panels, or ATS panels, are a development of the traditional manual changeover switches. All units comply with BSEN 60947-6-1 and are designed to fulfill certain requirements for fire safety as layed down in BS9999. All changeover solutions should be chosen to suit the load of the facility; the KVA rating of a generator is not a reliable indicator for rating an ATS panel, the primary mains supply and the power requirements of the installation should always be considered when selecting an ATS panel. Choosing an Automatic Transfer Switch These ATS panels are designed specifically for advanced mains to generator applications where much more functionality is required than that which the M2B system offers. Fitted with a Deep Sea Electronics digital controller they are highly functional and adjustable; they are designed specifically for use with mains to generator systems and require a small but constant DC supply, normally taken from the battery on the GenSet. M2G - Mains To Generator These ATS units are a budget mains to generator model and include a warm up and cool down timer as well as a volt free start contact on mains failure to signal the GenSet to start the generator. They do not rely on a DC power supply to operate so will function equally well as a mains to mains system. This versatility also makes it ideal for integrating into systems with existing ATS panels which are already starting the generator, as the warm up timer prevents it from closing to load until the generator is fully up and running. M2B - Mains To Backup These ATS units are used where the backup supply is always assumed to be available. Usually this is because the secondary supply is coming from a separate transformer to the primary supply; or, for fire safety purposes, from two breakers from the same supply with alternative cable routing. They can however also be used when the secondary supply is coming from a generator where the GenSet is handling all of the supply monitoring, the start up of the generator and is able to isolate it from the ATS panel until the supply is stable. M2M - Mains To Mains We use two methods of switching in our ATS panels; dual interlocked contactors and motorised changeover switches. Both are electronically and mechanically interlocked to conform to British and European standard BSEN 60947-6-1. Typically we use contactors up to 160A and motorised changeover switches at 200A and above; this is for a number of reasons, including reliability, but the main reason is cost. We can provide motorised changeover switches at lower ratings and contactors at higher ratings as well as interlocked MCCB and ACB solutions for special requirements. Switching Devices
Automatic transfer switch panels, or ATS panels, are a development of the traditional manual changeover switches. All units comply with BSEN 60947-6-1 and are designed to fulfill certain requirements for fire safety as layed down in BS9999.All changeover solutions should be chosen to suit the load of the facility; the KVA rating of a generator is nota reliable indicator for rating an ATS panel, the primary mains supply and the power requirements of theinstallation should always be considered when selecting an ATS panel.
Choosing an Automatic Transfer Switch
These ATS panels are designed specifically for advanced mains to generator applications where muchmore functionality is required than that which the M2B system offers. Fitted with a Deep Sea Electronicsdigital controller they are highly functional and adjustable; they are designed specifically for use withmains to generator systems and require a small but constant DC supply, normally taken from the batteryon the GenSet.
M2G - Mains To Generator
These ATS units are a budget mains to generator model and include a warm up and cool down timer aswell as a volt free start contact on mains failure to signal the GenSet to start the generator. They do notrely on a DC power supply to operate so will function equally well as a mains to mains system. This versatility also makes it ideal for integrating into systems with existing ATS panels which are already starting the generator, as the warm up timer prevents it from closing to load until the generator is fully up and running.
M2B - Mains To Backup
These ATS units are used where the backup supply is always assumed to be available. Usually this isbecause the secondary supply is coming from a separate transformer to the primary supply; or, for fire safety purposes, from two breakers from the same supply with alternative cable routing. They can however also be used when the secondary supply is coming from a generator where the GenSet is handling all of the supply monitoring, the start up of the generator and is able to isolate it from the ATS panel until the supply is stable.
M2M - Mains To Mains
We use two methods of switching in our ATS panels; dual interlocked contactors and motorised changeoverswitches. Both are electronically and mechanically interlocked to conform to British and European standardBSEN 60947-6-1. Typically we use contactors up to 160A and motorised changeover switches at 200A and above; this is for anumber of reasons, including reliability, but the main reason is cost. We can provide motorised changeoverswitches at lower ratings and contactors at higher ratings as well as interlocked MCCB and ACB solutionsfor special requirements.
The ATS panels are supplied with volt free remote indication terminals which can be used to inform remotesystems, such as a BMS, of the ATS panel’s status. We supply a range of remote indication boxes whichcan be powered from these terminals.
Version
Reference Suffix
Supply Type Mains To Mains Mains To Backup Mains To Generator
Standard Advanced Standard Advanced
M2M CS M2M CA M2M SS M2M SAM2B CS M2B SS
M2G C330&
M2G C331M2G S331
Phase failure and undervoltage monitoring ofprimary supply
Interlocked Contactor switching
Motorised Changeover switching
Manual switching override
Supply available indication
Supply in use indicationAdjustable time delay between switching
Advanced interface for GenSet control
Requires constant DC supply to operate
Test facilities & supply override
For dedicated firefighting lifts as detailedin BS9999
For Life Safety application to BS8519:2010 see ATS Bypass switches pages 22-23
Generator start signal timer and cool down timer
Suitable for standard Remote Indication Unit
Suitable for advanced Remote Indication Unit
AW D
Dimensions (mm)*see inner front cover for reference diagram
4 Pole for three phase supplies - Contactor Switching
35 cage700 500 200 150800 600 250 180
125A160A
ATS 12/4 M2MCSATS 16/4 M2MCS
70 cageATS 12/4 M2MCAATS 16/4 M2MCA 70 cage
800800800
600600
600
250300300
300300300
200A250A400A
ATS 20/4 M2MSSATS 25/4 M2MSSATS 40/4 M2MSS 30
2524ATS 20/4 M2MSA
ATS 25/4 M2MSAATS 40/4 M2MSA
4 Pole for three phase supplies - Motorised Switching with manual override
M10M10M8
AC1Rating
380-440V
AC3Rating
380-440V
40A 11kW40A 11kW40A 11kW80A 22kW
80A116A
45kW55kW
20A 11kW40A 22kW53A 30kW53A 30kW
200A250A400A
Dimensions (mm)*see inner front cover for reference diagram
80kW100kW150kW
These models are suited to applications where both supplies can beassumed to be normally available.
• Designed in compliance with BSEN 60947-6-1• For life safety requirements as detailed in BSEN 8519:2010 see page 20-21 for ATS Bypass• Electrical and mechanical interlocks between supplies• All phases on primary supply monitored to protect against total power loss, phase failure, incorrect phase sequence and under/over voltage• ‘Auto/Test’ switch• Adjustable over and under voltage trip delay• Adjustable over and under voltage limits• External LED indicators and volt free remote terminals to show the health of the supplies• (Advanced only) Adjustable switching delays between the opening of one contactor and the closing of the other• (Advanced only) External LED indicators and volt free remote terminals to show the supply in use• (Advanced only) Designed to be used for dedicated firefighting lifts as detailed in BS9999• Ingress protection IP55
These models are designed to be used in conjunction with a backup generator, but willalso operate where both supplies are coming from the mains.
• Designed in compliance with BSEN 60947-6-1• For life safety requirements as detailed in BSEN 8519:2010 see page 20-21 for ATS Bypass• Electrical and mechanical interlocks between supplies• All phases on primary supply monitored to protect against total power loss, phase failure, incorrect phase sequence and under/over voltage• ‘Auto/Off load generator test/On load generator test’ switch• Adjustable over and under voltage trip delay• Adjustable over and under voltage limits• Adjustable ‘warm up’ timer on the secondary supply for generators• Adjustable ‘cool down’ timer on the start signal for generators • Volt free mains failure indication terminals for signalling a GenSet• External LED indicators and volt free remote terminals to show the health of the supplies• External LED indicators and volt free remote terminals to show the supply in use• Ingress protection IP55
500500600
400400
400
200200200
100100120
600 400 200 120
AW DH BO
40A63A80A
100A35 cage25 cage25 cageATS 4/2 M2BC
OrderingReference
ATS 6/2 M2BCATS 8/2 M2BCATS 10/2 M2BC
2 Pole for single phase supplies - Contactor Switching
35 cage
600600700
400400
500
200200200
120120150
700 500 200 150
40A63A80A
100A35 cage25 cage25 cageATS 4/4 M2BC
ATS 6/4 M2BCATS 8/4 M2BCATS 10/4 M2BC
4 Pole for three phase supplies - Contactor Switching
35 cage700 500 200 150800 600 250 180
125A160A
70 cageATS 12/4 M2BCATS 16/4 M2BC 70 cage
800800800
600600
600
250300300
300300300
200A250A400A 30
2524ATS 20/4 M2BS
ATS 25/4 M2BSATS 40/4 M2BS
4 Pole for three phase supplies - Motorised Switching with manual override
M10M10M8
AC1Rating
380-440V
AC3Rating
380-440V
40A 11kW40A 11kW40A 11kW80A 22kW
80A116A
45kW55kW
20A 11kW40A 22kW53A 30kW53A 30kW
200A250A400A
Dimensions (mm)*see inner front cover for reference diagram
4 Pole for three phase supplies - Motorised Switching with manual override
630A800A
1000A1250A
40A63A80A
100A
40A63A80A
100A125A160A
200A250A400A
AC1Rating
380-440V
AC3Rating
380-440V
40A 11kW40A 11kW40A 11kW80A 22kW
80A116A
45kW55kW
20A 11kW40A 22kW53A 30kW53A 30kW
630A800A
1000A1250A
200A250A400A
Dimensions (mm)*see inner front cover for reference diagram
300kW375kW
80kW100kW150kW250kW
450kW
These models are designed to be used in conjunction with a backup generator.
• Designed in compliance with BSEN 60947-6-1• For life safety requirements as detailed in BSEN 8519:2010 see page 20-21 for ATS Bypass• Electrical and mechanical interlocks between supplies• All phases on primary and secondary supply monitored to protect against total power loss, phase failure, and under/over voltage• Fully controlled by either the interactive user interface or via a laptop by downloading the free of charge software• Multiple modes including auto, manual, test, start inhibit and return inhibit• Adjustable settings for voltage sensitivity, gen warm up timer, gen cool down timer, various alarms and many other features• Negative out and volt free mains failure indication terminals for signalling a GenSet• Requires a nominal but permanently available DC supply to run the controller. This is normally taken from the genset but we can supply either built in or remote solutions if this is not readily available• Volt free remote terminals to show the supply in use• Ingress protection IP55
Whether built in or standalone, these self-sustaining power supplies include a charger and battery to power the digital controller on the mains to generator ATS panels when an alternative source of DC power is not available.
Self-sustaining DC power supplies
Built into the panel.Suffix reference
Self MaintainedPower Supplies
12V DCOrder Reference
24V DCOrder Reference
/12V MPS /24V MPS
Stand alone MPS 160012 160024
Retro-Fit VoltageChange Kit
12V DCOrder Reference
24V DCOrder Reference
Kit of 3 relays 12VCK 24VCK
*Note: All M2G panels need a continuous DC supply to power the control panel. This is normally takenfrom the generator battery; hence the control voltage has been selected to match normal battery voltages.
If you do not wish to use thegenerator battery a built-in or stand-aloneself-maintained power source can be used.
Start Inhibit This mode prevents operation of the secondary (generator) supply when the primary supply fails. It will changeover to the primary supply to load as long as it is available and will not start or switch over to the generator supply.
Auto In this mode the controller will send the GenSet start signal on primary supply failure and switch the generator to load. When the primary supply returns the controller will return the load to the primary supply.
Prohibit Return On primary supply failure this mode allows the generator to start and switch the ATS load output over to it, as it does with the auto function but requires manual intervention to switch it back to the mains supply.
Manual This gives the user manual control of the power supplies, it will send the GenSet start signal to make both supplies available. Pressing the S1 button will close the mains supply to load and pressing the S2 button will close the generator supply to load.
Test When the panel is in test mode it will send the start signal to the GenSet and switch the load to the generator. It will continue to run in this way until switched back to a different mode.
Configuring the panel The controller can be configured from the control interface on the door or by using a configuration software free to download. A full set of configuration constructions is included with the panel and the configuration software is available on line from Deepsea electronics.
• For life safety ATS installations to BS8519:2010• Break-Before-Make operation• Door interlocked padlockable handles• Fully load rated AC23A 415-690V• Ingress protection IP55
Switchgear Systems have developed a range ofswitches that help provide bypass of Life Safety ATS panels, in a minimum number of operations, for bothsingle line and dual line switching.Designed to be fitted under our ATS switches these bypass switches combine with the ATS to provide an integrated system. This solution offers isolation in bypass mode with complete separation allowing safe working during installation, set-up, or maintainance on the ATS panel without loss of supply.
Single Line Bypass This provides bypass of one incoming supply to the ATS whilst isolating the other. It maintains continuityof supply to load while undergoing safe installation, set-up or maintainance on the ATS panel.
Dual Line Bypass For critical installations this provides bypass of both supplies around the ATS and uses a manual changeover, on either load, to allow selection of supply in the case of a primary supply failure. It maintains continuity of either supply while undergoing safe installation, set-up or maintainance on the ATS panel.
Alternative Configurations Two position I-II Make Before Break switches can be suppied to special order.Three position I-II-III Break Before Make switches are also available. These provide a central test position. The test position bypasses the ATS while still maintaining the incoming supplies allowing it to be testedwithout affecting the rest of the installation.
When ordered alongside our ATS panels (pages 14-19) these will bemechanically and electronically fitted to the bottom of the ATS (left)
Alternative layouts are available upon request (examples seen right)
* 250A-630A dual line units come in floor standing enclosures
Dimensions (mm)*see inner front cover for reference diagram
1000 600 400 30630A ST BYATS 63/4 SL 1 M10
1400 800 400 30630A ST BYATS 63/4 DL 2 M10*
All items are sold under Switchgear Systems Limited standard terms and conditions, a copy of whichcan be found on our website (www.switchgear-systems.com).
It is the responsibility of the installer to ensure items are fitted to the requirements of BS 7671(Wiring Regulations) and best working practice.
H - Height of enclosure
W - Width of enclosure
D - Depth of enclosure (does not include handle or any other external components)
A - Width of terminal
B - Cable room measured from connection point to the end of enclosure
O - Terminal connection diameter
At Switchgear Systems Ltd. we build most of our switchgear in wall mounting sheet steel powder coated RAL 7035 enclosures. There should be no need for spreader boxes with our equipment as the enclosures are suitably sized for the spreading of typical cable sizes suitable for the switchgear’s current carrying capacity. Where larger sizes and quantities of cables are being used we can put them into bigger enclosures and manufacture bespoke extension terminals. As well as the standard enclosure we also offer a range of material options for both the enclosure and gland plate/s, as well as a number of accessories.
Enclosure material options:• Standard RAL7035 sheet steel• Alternative colour options• Stainless steel enclosures• GRP enclosures• Floor standing sheet steel
Reference diagram for dimensions shown in tables throughout catalogue
Gland plate material options:• Standard sheet steel• Aluminium• Brass• Insulation board• Brushed cable entry
Accessories:• Mounting brackets• Padlockable hasps• Metering and CT’s• Indicator lights• Castell Interlocks• And many others
