background image

IB140036EN

For more information visit: www.eaton.com

Instruction Booklet

Effective:  October 2014

Page

 

17

O&M Manual for 40-1200A (480/600 Vac) ATC-900 3-Position, 

Open/Closed Transition Contactor Based Transfer Switch

4.5 Wiring

  

WARNING

POWER CONDUCTORS AND CONTROL WIRING MAY HAVE VOLT-

AGE PRESENT THAT CAN CAUSE SEVERE PERSONAL INJURY OR 

DEATH.  DEENERGIZE ALL POWER OR CONTROL CIRCUIT CON-

DUCTORS BEFORE BEGINNING TO PERFORM ANY WIRING ACTIV-

ITY TO OR WITHIN THE ATS EQUIPMENT.

Power sources, load conductors, and control wiring should be 

connected to locations as indicated in the customer wiring dia-

gram supplied with the ATS equipment.

CAUTION

ENSURE THE ATS VOLTAGE IS SET CORRECTLY.  IT SHOULD BE 

THE SAME AS THE SOURCE 1 AND SOURCE 2 LINE VOLTAGES.  

OPERATING THE EQUIPMENT ON IMPROPER VOLTAGE CAN 

CAUSE EQUIPMENT DAMAGE.

Once the ATS equipment has been installed and wired, perform 

the initial mechanical and electrical procedures as outlined in Sec-

tion 6 to verify that the equipment is installed and operating 

properly.

4.6 Engine Start Connection

The engine control contact connections are located on the logic 

panel of the ATS. Connect the engine start wires to the red ter-

minal blocks. See the drawings for the switch. A contact closes 

between these terminal when an engine start signal is provided 

by the ATS logic. The wiring diagram provides additional engine 

start connection information. Use the proper wire size as listed 

by the generator set (Genset) manufacturer

For the I/O connections, there are some switches that the Inputs 

are wired to a terminal block while others are not. When they are 

not, the terminal blocks on the controller are simply used, see 

Figure 13A. The switch and listed terminal blocks are shown 

below.

1200A D frame                      Inputs/Gen Start to terminal blocks

The I/O module is shown in Figure 13B.  More on both devices 

can be found in the ATC-900 instruction booklet.

 

NOTICE

PRIOR TO MAKING THE ENGINE START CONNECTION TO THE 

SWITCH, SET THE ENGINE GENERATOR CONTROLS SELECTOR 

SWITCH IN THE OFF POSITION TO PREVENT AN UNWANTED 

ENGINE START.  CONTROL WIRING, SUCH AS THE ENGINE START 

WIRES, MUST BE RUN IN A SEPARATE CONDUIT FROM THE 

POWER CABLES.

Summary of Contents for ATC-900

Page 1: ...sition Contactor Based Transfer Switch Instruction Booklet Description Page Introduction 2 Receiving Handling and Storage 6 Equipment Description 7 Installation and Wiring 14 Operation 20 Testing and...

Page 2: ...A It is provided as a guide for authorized and qualified person nel only Please refer to the specific WARNING and CAUTION in Section 1 1 2 before proceeding If further information is required by the p...

Page 3: ...stored the ATS automatically transfers back and initiates generator shutdown In the event the Source 1 power source fails and the Source 2 power source does not appear the ATS remains connected to the...

Page 4: ...ent catalog numbers provide a significant amount of relevant information that pertains to a particular piece of equipment The Catalog Number Identification Table Table 2 provides the required interpre...

Page 5: ...applica ble setpoint ranges for the nominal voltage and frequency setting Source 2 Failed or Fails Source 2 is defined as failed when it is outside of its under voltage overvoltage underfrequency over...

Page 6: ...o sure Care should be exercised however to protect the equip ment from impact at all times Do not remove the protective packaging until the equipment is ready for installation When the ATS equipment r...

Page 7: ...POWER PANEL VOLTAGE SELECTION TRANSFORMER PANEL Figure 5A Three Basic Panels of an Open Transition ATS 1200A LOGIC PANEL POWER PANEL VOLTAGE SELECTION TRANSFORMER PANEL Figure 5B Three Basic Panels of...

Page 8: ...North American market voltage selection panel consists of multi tap transformers contained in a steel case mounted in the transfer switch enclosure Figure 7 The cover has two connec tors on it with th...

Page 9: ...oller has an operating temperature of 20 to 70 C 4 to 158 F The controller circuit board is protected by an insulating confor mal coating The specifications under normal operating conditions are as fo...

Page 10: ...hieves a transfer between sources with no power interruption Both sources must be synchronized in fre quency phase and voltage before the transfer is initiated In phase transition is a feature that wi...

Page 11: ...ad condition after a transfer from the generator source has been made Count down timing begins when the transfer is completed In applica tions where two generators are selected the same cool off timer...

Page 12: ...Control This feature displays status information of a remotely located ATC 900 controller The HMI type Remote Annunciator will seri ally communicate with the ATC 900 over the Modbus 485 or Ethernet u...

Page 13: ...ton ATS equipment enclosed in any of the enclosures listed in Table 3 is listed for application by UL and ULC In addition Eaton ATSs are listed in File E38116 by Underwriters Laborato ries Inc under S...

Page 14: ...supporting the weight of the enclosed ATS equipment For standard ATSs avoid locations that are moist hot or dusty However Eaton offers optional enclosure designs that can be used in special environmen...

Page 15: ...1A Typical Mounting of the ATS to a Mounting Surface Open Transition ATS for Wall Mounting Step 5 Double check to ensure that all packing and shipping materials have been removed Step 6 If Seismic Uni...

Page 16: ...tion Verify that the lugs supplied will accommodate the power cables being used Also verify that the cables comply with local electrical codes Standard ATS equipment as supplied from the factory will...

Page 17: ...ment is installed and operating properly 4 6 Engine Start Connection The engine control contact connections are located on the logic panel of the ATS Connect the engine start wires to the red ter mina...

Page 18: ...232 J14 CT Earth Controller Ground J8 USB Front Panel Memory Stick Interface J11 I O Module s SW1 Modbus Terminator Module J13 RS 422 Interface Source Load Interface Switch Position Contacts For more...

Page 19: ...he cover has two connec tors on it with the one on the right being selectable depending on the voltage applied to S1 and S2 The transformer unit is eas ily removed by removing the two front screws and...

Page 20: ...OURCE 2 IF A GENERATOR CONTROL SELECTOR SWITCH TO THE OFF POSITION BEFORE ATTEMPTING A MANUAL TRANS FER To manually operate 1 Disconnect all sources of power 2 Disconnect the J7 connector from the ATC...

Page 21: ...s on Source 1 4 Simultaneously the engine cool down timer initiates the shut down of the engine driven generator 5 Transfer of the load back to the Source 1 power source is now complete Section 6 Test...

Page 22: ...ded for a preset time after transfer to the Source 1 power source is com pleted 6 1 5 Alternate Tests 1 Alternate operational tests may be possible depending upon the options provided with any given A...

Page 23: ...to go to Source 1 Step 4 Depress the TRIP button located on the operating mechanism of the contactor to bring the contactor to neutral trip position Step 5 Depress the SELECT button located on the ope...

Page 24: ...the structure area for safety hazards or potential maintenance problems Inspect the area especially where switching device is installed for any safety hazards including personnel safety and fire hazar...

Page 25: ...at 68C8282H02 40 1200A Domestic Switch 480VAC 600VAC 4 Pole Cat 68C8282H02 Power Panel Close Transition Does not include Contactor 40 1200A Domestic Switch 480AC 600VAC 2 Pole Cat 69D8080H01 40 1200A...

Page 26: ...LY SUGGESTED THAT THE FULL INSTRUCTIONS BE FOLLOWED FOR ALL INSTALLATIONS SET UP AND TESTING Step 1 Mount the ATS on a flat rigid surface Figure 18A 18B Shim if necessary Figure 18A Mounting Details O...

Page 27: ...TAGE SELECTION PANEL LOGIC PANEL GROUND CONNECTION IB140036EN For more information visit www eaton com Instruction Booklet Effective October 2014 Page 27 O M Manual for 40 1200A 480 600 Vac ATC 900 3...

Page 28: ...TION PANEL LOGIC PANEL GROUND CONNECTION For more information visit www eaton com IB140036EN Instruction Booklet Page 28 Effective October 2014 O M Manual for 40 1200A 480 600 Vac ATC 900 3 Position O...

Page 29: ...e proper wire size as listed by the generator set Genset manufacturer For the I O connections there are some switches that the Inputs are wired to a terminal block while others are not When they are n...

Page 30: ...ource 1 contactor Momentarily energize K3 N Is Source 1 available yet Y Source 1 is powering the load TDN timer times out if Option 32A is enabled TDN timer times out if Option 32A is enabled Source 1...

Page 31: ...ad TDN timer times out if Option 32A is enabled TDN timer times out if Option 32A is enabled Source 1 is powering the load N Is Source 1 available yet TDEN timer times out Y Open Source 2 contactor En...

Page 32: ...ww eaton com IB140036EN Instruction Booklet Page 32 Effective October 2014 O M Manual for 40 1200A 480 600 Vac ATC 900 3 Position Open Closed Transition Contactor Based Transfer Switch Figure 22 Close...

Page 33: ...N For more information visit www eaton com Instruction Booklet Effective October 2014 Page 33 O M Manual for 40 1200A 480 600 Vac ATC 900 3 Position Open Closed Transition Contactor Based Transfer Swi...

Page 34: ...information visit www eaton com IB140036EN Instruction Booklet Page 34 Effective October 2014 O M Manual for 40 1200A 480 600 Vac ATC 900 3 Position Open Closed Transition Contactor Based Transfer Swi...

Page 35: ...N For more information visit www eaton com Instruction Booklet Effective October 2014 Page 35 O M Manual for 40 1200A 480 600 Vac ATC 900 3 Position Open Closed Transition Contactor Based Transfer Swi...

Page 36: ...OF TRADE ARE MADE REGARDING 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 st...

Reviews: