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Asco 3ADTS, Installation Manual

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Asco 3ADTS Installation Manual Download Page 1

ASCO

ASCO

ASCO

ENGINE CONTROL CONTACTS

LOAD DISCONNECT FEATURE

COMMON ALARM & NOT IN AUTO SIGNALING FEATURES

INPHASE TRANSFER FEATURE FOR LOAD TRANSFER

SOURCE AVAILABILITY SIGNALS

EXTERNAL POWER SUPPLY COMPATIBILITY

LOAD CURRENT METERING

NON-AUTOMATIC (MANUAL) OPERATION

FOUR-FUNCTION SOFTWARE BUNDLE

REMOTE CONTROL FEATURES

Summary of Contents for 3ADTS

Page 1: ...URE COMMON ALARM NOT IN AUTO SIGNALING FEATURES INPHASE TRANSFER FEATURE FOR LOAD TRANSFER SOURCE AVAILABILITY SIGNALS EXTERNAL POWER SUPPLY COMPATIBILITY LOAD CURRENT METERING NON AUTOMATIC MANUAL OPERATION FOUR FUNCTION SOFTWARE BUNDLE REMOTE CONTROL FEATURES ...

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Page 8: ...h for all mounting details including door opening space If bottom cable entry is used the foundation must be prepared so that the conduit stubs are located correctly Refer to the enclosure outline drawing for specified area and location Provide cable bending space and 1 inch minimum clearance to live metal parts When a concrete floor is poured use interlocking conduit spacer caps or a wood or meta...

Page 9: ...d with the transfer switch Be careful when stripping insulation from the cables avoid nicking or ringing the conductor Remove surface oxides from cables by cleaning with a wire brush When aluminum cable is used apply joint compound to conductors Tighten cable lugs to the torque specified on rating label Harnesses The transfer switch is connected to the left side of the controller by a plug in harn...

Page 10: ...s provided on the transfer switch for maintenance purposes only Manual operation of the transfer switch should be checked before it is energized operated electrically Do not manually operate the transfer switch until both power sources are disconnected open both circuit breakers 1 After deenergizing both power sources open the enclosure door Locate and remove the maintenance handle from the clip o...

Page 11: ...e positions ALL POWER MUST BE OFF Transfer Switch Position Interlocked Shafts Link between contact shafts prevents closing both N E contacts Maintenance Handle Shaft Indicators Normal E O upper contacts open N C lower contacts closed Load Disconnected E O upper contacts open N O lower contacts open Emergency E O upper contacts closed N C lower contacts open Note The hub and contact shaft turn in o...

Page 12: ...e settings in the controller 1 Close the normal source circuit breaker The normal source accepted and the load on normal lights should come on 2 Use an accurate voltmeter to check phase to phase and phase to neutral voltages present at the transfer switch normal source terminals 3 Close the emergency source circuit breaker Start generator if necessary The emergency source accepted light should com...

Page 13: ...s the transfer button The engine should start and run within 15 seconds For 3NTS 3NDTS the generator must be started manually at the generator The emergency source accepted light should come on 3 For 3ATS 3ADTS the transfer switch should transfer to the emergency position The load on emergency light should come on and the load on normal light should go off For 3NTS 3NDTS press the transfer button ...

Page 14: ...ns no further lubricating is required Renew factory lubrication if the transfer switch is subjected to severe dust abnormal operating conditions or if the TS coil s is replaced Order lubrication kit 75 100 Check all cable connections retighten them Torque to values shown on the transfer switch label Replacement Parts When ordering replacement parts provide the Serial No Bill of Material No BOM and...

Page 15: ...st 90 of nominal phase to phase voltage between transfer switch terminals EA and EC or EL1 and EL2 for 2 pole switches There are factory settings For 3ATS 3ADTS the transfer switch does not transfer the load to normal source when normal returns or after transfer test Wait for the feature 3A time delay For immediate retransfer press the transfer button bypass timer If inphase transfer is active wai...

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