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IB140015EN

For more information visit: www.Eaton.com

Instructional Booklet

Effective: August 2014

Page

 

15

ATC-900 Magnum Tranfer Switch O & M Manual

The following are some of the more popular options that can be 

used on the Magnum Switch.  There are several others which are 

shown in the ATC-900 instruction booklet.

9B. Maintenance Selector Switch (MSS)

Provides a 2-position, maintained contact selector switch marked 

"Operate" and "Disable." When the MSS is placed in the "Disable" 

position, the controller logic will be disconnected from the transfer 

motor circuit. The MSS is placed in the "Operate" position for nor-

mal automatic operation.

29G. Automatic/Manual Operation With Selector Switch

Provides 2-position selector switch (labeled Auto/manual) that per-

mits selection of the automatic or manual transfer. When in the 

"Auto" position, the transfer switch operates with fully automatic 

transfer, retransfer and generator startup and shutdown opera-

tions. When in the "Manual" position, manual operation is required 

to initiate the generator startup or retransfer with generator shut-

down operations.

Note:

Transfer switches with 

Feature 29

must have a white light lit when 

the switch is not in the automatic switch mode.

37. Service Equipment Rated Transfer Switch

Provides the label "suitable for use as service equipment" and the 

features necessary to meet the requirements for the label. 

Includes service disconnect with visible indication and neutral 

assembly with removable |link. 

Feature 16B or 16N

 must be 

selected separately.

37A. Service Equipment Rated

Transfer Switch Without Ground Fault Protection Provides service 

equipment rating for an application that does not require ground 

fault protection.

37B. Service Equipment Rated Transfer Switch With Ground Fault
Protection

Provides service equipment rating for an application that requires 

ground fault protection.

38. Steel Cover

Provides protection for a device panel as option 38a and protec-

tion for the controller as option 38b.

41E. Space Heater With Thermostat

Provides 1 100 or 375-watt space heater.  A separate transformer 

is provided for the 375 watt heater and it is located on the top 

shelf of the switch. 

CVX

The CVX device features a Thermally Protected Metal Oxide Varis-

tor technology and comes with high intensity LED phase status 

indicators.

SPD

The SPD features a Thermally Protected Metal Oxide Varistor 

technology. It comes with dual-colored protection status indica-

tors for each phase and for neutral-ground protection mode. It 

comes with an audible alarm with silence button and a Form C 

contact. An optional SPD with surge counter feature package is 

available. This provides six-digit surge counter with reset button.

3.7 Enclosure

The rugged steel switch enclosure is supplied with four door 

hinges, regardless of enclosure size, to insure proper support of 

the door and door mounted devices.  The hinges have removable 

hinge pins to facilitate door removal. The doors are supplied as 

standard with thumbscrew and padlock latches.  Cable entry holes 

are the customer’s responsibility.
The door is used to mount a variety of lights, switches, and push 

buttons, depending upon the options required for a particular 

switch.  All switch doors are supplied with a heavy duty plastic 

accessory panel in place, whether or not external devices are 

required.  When lights, pushbuttons, or switches are required, 

they are normally mounted in the plastic door mounted panel. 
Transfer switch enclosures and some internal steel mounting 

plates, such as the transformer panel mounting plate, go through 

a pre-treatment cleaning system prior to painting to insure a dura-

ble finish.  Should the enclosure become scratched and in need of 

touch up paint, use ANSI 61. All remaining steel is galvanized.
The standard switch enclosure is NEMA Type 1 for general indoor 

use (Table 4). 

Table 4. Transfer Switch Equipment Enclosures.

3.8 Standards

Eaton transfer switch equipment is listed for application by UL and 

CSA.  In addition, Eaton ATSs are listed in File E38116 by 

UL, Inc., under Standard UL 1008.  This standard covers require-

ments for ATSs intended for use in ordinary locations to provide 

for lighting and power as follows:    

a. In emergency systems, in accordance with articles 517 and 

700 in the National Electrical Code (NEC), American National 

Standards Institute/National Fire Protection Association 

(ANSI/NFPA) 70 and the NFPA No. 76A and/or

b. In stand-by systems, in accordance with article 702 of the 

NEC and/or

c. In legally required stand-by systems in accordance with article 

701 of the NEC.

d. In critical operations power systems (COPS article 708) in 

accordance with article 708 of the NEC

Eaton ATSs are available to meet NFPA 110 for emergency and 

stand-by power systems, and NFPA 99 for health care facilities 

when ordered with the appropriate options.
Since Eaton ATSs utilize specially designed switches and/or 

switching devices as the main power switching contacts, these 

devices must also be listed under the additional UL Standard 

1066.  UL utilizes two basic types of listing programs:  a) Label 

Service and  b) Re-examination. UL1066 employs a label service 

listing program which requires an extensive follow-up testing pro-

gram for listed devices.  Standard UL1008 for ATSs lists devices 

under the re-examination program which only requires a continual 

physical re-examination of the components used in the product to 

insure consistency with the originally submitted device.  Follow-up 

testing IS NOT required by UL1008.
Representative production samples of switches and switching 

devices used in Eaton ATSs are subjected to a complete test pro-

gram identical to the originally submitted devices on an ongoing 

periodic basis per UL1066.  The frequency of such a re-submittal 

can be as often as every quarter for a low ampere device.

NEMA TYPE

DESIGN

PROTECTION

1

Indoor

Enclosed Equipment

3R

Outdoor

Rain, Ice Formation

Summary of Contents for ATC-900

Page 1: ...scription Page Introduction 3 Receiving Handling and Storage 10 Equipment Description 10 Installation and Wiring 16 Operation 22 Drawout and Fixed Switching Devices 24 Operation of the Bypass Isolatio...

Page 2: ...TALLATION OPERATION OR MAINTENANCE AND ALL DETAILS AND VARIA TIONS OF THIS EQUIPMENT DO NOT PURPORT TO BE COVERED BY THESE INSTRUCTIONS IF FURTHER INFORMATION IS DESIRED BY THE PURCHASER REGARDING HIS...

Page 3: ...lost from the Source 1 power source the transfer switch transfers the load to the Source 2 power source This transfer can be automatic or manual depending upon the type of transfer switch equipment b...

Page 4: ...trically operated and bypass isolation transfer switch are the available types for the configuration described in this manual Operation of the ATS and the bypass isolation switch only are dis cussed i...

Page 5: ...rs with short time ratings UL 1066 short time withstand rating SOURCE 1 SOURCE 1 SOURCE 1 SOURCE 1 BYPASS SOURCE 1 SOURCE 1 SOURCE 1 AVAILABLE SOURCE 2 ISOLATED ISOLATED POSITION SOURCE 2 POSITION SOU...

Page 6: ...esign Bypass iso lation automatic transfer switches are provided with all drawout type designs In addition the 4000A and 5000A designs come standard with drawout magnum power devices Figure 6 The Magn...

Page 7: ...s connects to provide for the drawout functioning The operating mechanism is a two step stored energy mechanism either manu ally or electrically operated When withdrawn on the extendable carriage rail...

Page 8: ...wo slotted mounting holes to facilitate mounting 1 4 Transfer Switch Catalog Number Identification Transfer switch equipment catalog numbers provide a significant amount of relevant information that p...

Page 9: ...les Position 8 2 2 poles 3 3 poles 4 4 poles Enclosure Position 14 S NEMA 1 R NEMA 3R T Thru Door Design Logic Certification Position 15 U UL Listed R UL Recognized X No Listing V 9 MG B 3 X R U Frame...

Page 10: ...ed in a safe place 2 2 Handling As previously mentioned the transfer switch equipment is pack aged for fork lift movement Protect the equipment from impact at all times and DO NOT double stack Once th...

Page 11: ...ermal and short circuit protection in either or both switching devices is available Section 3 6 These continuous duty devices are rated for all classes of loads In addition they have high dielectric s...

Page 12: ...CLOSED posi tion and the status of the stored energy mechanism The switching device is closed by energizing a solenoid that releases the spring mechanism A shunt trip will open the switch ing device...

Page 13: ...not on the outside the switch is older than November of 2014 Taps are available to switch out see section 4 6 for instructions Taps are provided for 208 240 480 600 for North America and 220 380 415 f...

Page 14: ...a brief description The feature numbers corresponds to the internal codes and some of these numbers may be on the product drawings Also see Table 5 ATC 900 Fea tures for a compact list Table 5 also in...

Page 15: ...door and door mounted devices The hinges have removable hinge pins to facilitate door removal The doors are supplied as standard with thumbscrew and padlock latches Cable entry holes are the customer...

Page 16: ...ays or cover the logic in a way that restricts adjustments Maintain proper electrical clearances between live metal parts and grounded metal For installation and maintenance purposes the Source 1 and...

Page 17: ...rify that the cables comply with local electrical codes Standard ATS equipment as supplied from the factory will accommodate the wire sizes shown in Table 5 Carefully strip the insulation from the pow...

Page 18: ...pulled into position Step 5 Carefully strip the insulation from the power cables Avoid nicking or ringing of the conductor strands Pre pare the stripped conductor termination end by cleaning it with...

Page 19: ...rce 2 ET1 The control power transformers are mounted behind a removable panel see Figure 22B Figure 22 Transformer and Taps Figure 22A Figure 22B Remove the transformer pack cover by loosening the 4 s...

Page 20: ...ctions are located there The S2 generator start s terminal blocks are red in color Note Prior to making the engine start connection to the switch on bypass isolation units set the engine generator con...

Page 21: ...om the con troller These are wired out from the ATC 900 to terminal blocks for easier access With I O Modules there could be up to 20 in and 20 out Form C available Some I O may be fixed depending on...

Page 22: ...indicator window shows whether the switch is open or closed Figure 25 Close Switch by Pushing Close Button 5 2 Automatic Transfer Switch The operating sequence of an ATS is dictated by the switch s s...

Page 23: ...Logic Connectors 3 Verify OPEN flags 7805C60H05 MANUAL CLOSE BUTTON Operating Instructions Do Not Use Without Reading Manual OVERLAPPING CONTACTS must be Synchronized SOURCE 1 AND SOURCE 2 WARNING 78...

Page 24: ...be completed 6 1 1 Switching Device Positioning The Magnum drawout switching device has four normal positions REMOVE Withdrawn Figure 29 DISCONNECT Figure 32 TEST Figure 31 CONNECT Figure 30 The REMOV...

Page 25: ...om Instructional Booklet Effective August 2014 Page 25 ATC 900 Magnum Tranfer Switch O M Manual Figure 30 Switching Device in the CONNECT Position Figure 31 Switching Device in the TEST Position Figur...

Page 26: ...rs See Figure 30 through 33 Red Connect Yellow Test and Green Disconnect To remove the switching device from its compartment follow the procedure just described using a counter clockwise ratcheting mo...

Page 27: ...e following standard features 1 AMBER LED on the ATC 900 Controller to indicate if the Source 1 power source is available 2 AMBER LED on the ATC 900 Controller to indicate if the Source 2 power source...

Page 28: ...Source 1 position energized GREEN LED on the ATC 900 con troller will no longer be illuminated 5 Inspect and or perform the needed maintenance on the Source 1 switching device 6 Rack in the Source 1 s...

Page 29: ...Hammer Phase Phase Phase Phase Ground Digitrip 3000 Operatio High Commun Time Overcurrent Curve Shape Pickup x In Time Multiplier Time Program Phase Ground RMS Settings Test Time Trip Cause Short Del...

Page 30: ...ically close and Source 1 position energized GREEN LED will be illu minated 11 Move the generator selector switch to the AUTO position 12 The Source 1 switching device is now back in automatic oper at...

Page 31: ...illuminated 2 Close the Source 1 bypass switching device manually and the Source 1 bypass RED light will illuminate 3 Move the generator selector switch to the OFF or AUTO posi tion Section 8 Testing...

Page 32: ...with the other procedures If NO Go through section 8 2 4 first before continuing Step 3 Is the Source 2 switch OPEN If YES Proceed to Step 5 If NO Proceed to Step 4 Step 4 Measure the voltage between...

Page 33: ...led for any safety hazards including personnel safety and fire hazards Exposure to certain chemical vapors can cause deterioration of electrical connections Inspect for accumulated dirt loose hardware...

Page 34: ...placement instructions 9 3 1 Cover Removal and Replacement A 3 8 wrench or socket and ratchet is required to perform this procedure Cover Removal Step 1 Locate the bolts used to secure the cover to th...

Page 35: ...ding on certain options ordered The best way to order a harness is to call tech support or sales with the GO number There is a new top shelf for the switch that moves some compo nents that do not need...

Page 36: ...ional Booklet Page 36 Effective August 2014 ATC 900 Magnum Tranfer Switch O M Manual Figure 45 Rear of Switch SENSING HARNESS 68C8190G02 4 0 to 500 KCMIL NEUTRAL TERMINAL AL D2247A22T OR 500 to 750 KC...

Page 37: ...IB140015EN For more information visit www Eaton com Instructional Booklet Effective August 2014 Page 37 ATC 900 Magnum Tranfer Switch O M Manual Notes...

Page 38: ...Instructional Booklet Page 38 Effective August 2014 ATC 900 Magnum Tranfer Switch O M Manual For more information visit www Eaton com IB140015EN Notes...

Page 39: ...IB140015EN For more information visit www Eaton com Instructional Booklet Effective August 2014 Page 39 ATC 900 Magnum Tranfer Switch O M Manual Notes...

Page 40: ...ARDING THE INFORMATION RECOMMENDATIONS AND DESCRIPTIONS CONTAINED HEREIN In no event will Eaton be responsible to the purchaser or user in contract in tort including negligence strict liability or oth...

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