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Utility - Generator Transfer Switch

Source 1 is available

Close Source 1

(Energize K1)

Source 1 is powering the load

Source 1 becomes unavailable

(or Engine Test, Plant Exercise, Go To Emergency)

TDES timer times out

Send "Engine Start" signal

(Energize Gen Start relay)

Is Source 2

Available?

TDNE timer times out

Open Source 1

(Energize K2)

Close Source 2

(Energize K2)

Source 2 is powering the load

Is Source 1

Available?

TDEN timer times out

Yes

Sends pretransfer signal

TPRE timer times out

(If Source 1 is Available)

Open Source 2

(Energize K1)

Close Source 1

(Energize K1)

Source 1 is powering the load

TDEC timer times out

Remove "Engine Start" signal

(De-energize Gen Start relay)

Sends pretransfer signal

TPRE timer times out

For more information visit: www.generac.com

IB01602078E

Instruction Booklet

Page

Effective: September 2011

40-400A (480/600Vac) ATC-300+ 3-Postion

Contactor Based Transfer Switch

Figure 24. Utility - Generator Transfer Switch.

Содержание 40-400A

Страница 1: ...sfer Switch Instruction Booklet Description Page Introduction 2 Receiving Handling and Storage 6 Equipment Description 7 Installation and Wiring 15 Operation 21 Testing and Problem Solving 22 Adjustme...

Страница 2: ...guide for authorized and qualified personnel only Please refer to the specific WARNING and CAUTION in Section 1 1 2 before proceeding If further infor mation is required by the purchaser regarding a...

Страница 3: ...ransfers 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 Source 1 power source until t...

Страница 4: ...ber Identification Transfer switch equipment catalog numbers provide a significant amount of relevant information that pertains to a particular piece of equipment The Catalog Number Identification Tab...

Страница 5: ...fined as a change of the load connection from the Source 2 to the Source 1 Source 1 Source 1 is the primary source normal source normal power source or normal Source 2 Source 2 is the secondary source...

Страница 6: ...y for installation Once the top packaging is removed from the shipment the enclosure door can be opened A plastic bag of documents will be found in the enclosure usually attached to the inside of the...

Страница 7: ...corporates a power contactor The main contacts connect and disconnect the load to and from the different power sources The power contactor is mechanically and electrically interlocked to prevent the t...

Страница 8: ...are of the controller contain the intelligence supervisory circuits that constantly moni tor the condition of the power sources It provides the intelli gence necessary for the operation of the ATS Fig...

Страница 9: ...gins when Source 1 becomes available If Source 2 fails during timing then re transfer is immediate overriding the time delay Adjustable 0 1800 Seconds 4 Time Delay for Engine Cool down TDEC This featu...

Страница 10: ...Time Delay Bypass Pushbutton This feature provides a way by pushing the Help and Step pushbutton simultaneously to bypass the TDNE Feature 1 and or TDEN Feature 2 time delays The Time Delay Bypass fun...

Страница 11: ...ge divided by the minimum phase voltage User selectable setpoints are available for dropout and pickup unbalance settings minimum 2 differential Dropout is adjustable from 5 to 20 Pickup is adjustable...

Страница 12: ...ntenance Selector Switch MSS Marked OFF ON This feature provides selector switch disconnection of control to transfer thus allowing testing of the transfer switch control logic circuitry with out init...

Страница 13: ...s fer switch logic controllers and or associated device pan els These covers function with Generac s ATC series logic controllers and device panels The covers are designed for NEMA 1 3R 4X and 12 appl...

Страница 14: ...ted in Table 3 is listed for application by UL and ULC In addition Generac ATSs are listed in File E38116 by Underwriters Labora tories Inc under Standard UL 1008 This standard covers requirements for...

Страница 15: ...ffers optional enclosure designs that can be used in special environments If there are any doubts as to a location s suitability discuss them with your Generac representa tive Check to make certain th...

Страница 16: ...Mounting Surface Step 6 Double check to ensure that all packing and shipping materials have been removed 4 4 Power Cable Connections WARNING POWER CONDUCTORS MAY HAVE VOLTAGE PRESENT THAT CAN CAUSE S...

Страница 17: ...ned 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...

Страница 18: ...VDC Source 2 Closed 32 VDC Lockout 32 VDC Go To Source 2 32 VDC Monitor Mode Control Inputs 8 0 in 6 5 in 3 4 1 2 7 8 5 6 Output Relays Control Inputs J8 K4 NO K4Com K3 NO K3 Com 2 1 Rx Tx Emergency I...

Страница 19: ...E 4 7 1 Standard Voltage Selection Panels 208 240 480 600 V 60 Hz 220 380 415 V 50 Hz The Standard voltage selection panel consists of multi tap trans formers contained in a steel case mounted in the...

Страница 20: ...rminal Blocks Step 2 Begin by inserting a small flathead screwdriver into the square tool hole with the flat surface of the screwdriver against the back wall of the hole With a little bit of force pus...

Страница 21: ...2 Disconnect the J7 connector from the ATC 300 controller 3 Locate the manual lever on the left side of the contactor 4 Locate the handle used to manually transfer the switch 5 Attach the handle to th...

Страница 22: ...Section 6 Testing and Problem Solving 6 1 Testing After the ATS equipment is initially installed or during planned outages the installation should be tested to ensure that all equip ment operates pro...

Страница 23: ...allow the engine to run unloaded 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 opti...

Страница 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 haza...

Страница 25: ...nsformer Pack 400A 2 Pole 3 Pole 4 Pole Cat 68C8229G02 Contactors 400A 400A 480VAC 2 Pole Cat 69C2990G01 400A 480VAC 3 Pole Cat 69C2990G02 400A 480VAC 4 Pole Cat 69C2990G03 200A 600VAC 2 Pole Cat 69C2...

Страница 26: ...IONS SET UP AND TESTING Step 1 Mount the ATS on a flat rigid surface Figure 20 Shim if necessary ATC 300 Electrical ase ase Source 1 Source 2 Available Available Connected Connected Load Unit Status A...

Страница 27: ...EL VOLTAGE SELECTION AND TRANSFORMER PANEL GROUND CONNECTION IB01602078E For more information visit www generac com Instruction Booklet Effective September 2011 Page 27 40 400A 480 600Vac ATC 300 3 Po...

Страница 28: ...ource 2 S1 Line S1 Neut S2 Line Control Power S2 Neut Clk In Out 5V Gnd Programming Port K1 Com K1 NO K2 Com K2 NO Pretransfer Com Pretransfer NO Pretransfer NC Alarm Com Alarm NO Alarm NC Earth Groun...

Страница 29: ...witch Figure 23 ATC 300 Logic Utility Supplying Load Step 6 To view the setpoints press the Step Enter pushbut ton and enter the Password Note The factory default Password is 0300 Once all installatio...

Страница 30: ...wering the load Is Source 1 Available TDEN timer times out Yes No No Yes Sends pretransfer signal TPRE timer times out If Source 1 is Available Open Source 2 Energize K1 Close Source 1 Energize K1 Sou...

Страница 31: ...load Is Source 1 Available TDEN timer times out Yes No No Yes Open Source 2 Energize K1 Close Source 1 Energize K1 Source 1 is powering the load Sends pretransfer signal TPRE timer times out If Source...

Страница 32: ...inal System Voltage 110 S1 OV PICK Volts Source 1 Overvoltage Pickup Range Contactor Style ATS 2 position 3 position 103 to Dropout 2 of Nominal System Voltage 105 S2 OV PICK Volts Source 2 Overvoltag...

Страница 33: ...Timer 0 sec to 6 sec 6 IN PHASE Hertz In Phase Transition 0 or 1 1 Enabled 1 IP FREQ DIFF Hertz In phase Transition Frequency Difference 0 0 Hz to 3 0 Hz 1 0 SYNC TIME Minutes In phase Transition Sync...

Страница 34: ...anually start the engine generator at the generator con troller Check that the generator is running and the Source 2 Available amber LED is lit Press the Step Enter pushbutton step through the phase v...

Страница 35: ...Failure Test Initiate a Load Test by simulating an actual power failure 1 This should be done by opening the upstream breaker or fused disconnect switch 2 The generator should start and the ATS should...

Страница 36: ...241 278 348 57 68 119 125 137 217 237 274 342 56 67 116 123 134 213 232 269 336 55 66 114 121 132 209 228 264 330 54 65 112 119 130 205 224 259 324 53 64 110 117 127 201 220 254 318 52 62 108 114 125...

Страница 37: ...Effective September 2011 Page 37 40 400A 480 600Vac ATC 300 3 Postion Contactor Based Transfer Switch OVERVOLTAGE PICKUP DROPOUT TABLE PERCENTAGE VOLTAGE 120 208 220 240 380 415 480 600 110 132 229 2...

Страница 38: ...For more information visit www generac com IB01602078E Instruction Booklet Page 38 Effective September 2011 40 400A 480 600Vac ATC 300 3 Postion Contactor Based Transfer Switch Notes...

Страница 39: ...IB01602078E For more information visit www generac com Instruction Booklet Effective September 2011 Page 39 40 400A 480 600Vac ATC 300 3 Postion Contactor Based Transfer Switch Notes...

Страница 40: ...E ARE MADE REGARDING THE INFORMATION RECOMMENDATIONS AND DESCRIPTIONS CONTAINED HEREIN In no event will Generac be responsible to the purchaser or user in contract in tort including negligence strict...

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