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7000 Series 7ACTB
Operator’s
Automatic Closed–Transition Transfer
& Bypass–Isolation Switches
Manual
G design 1000 through 3000 amp. sizes
Refer to the outline and wiring drawings provided
with your 7000 Series ACTB for all installation and
DANGER is used in this manual to warn of high
connectiondetailsandaccessories.
voltages capable of causing shock, burns, or death.
RefertoGroup5ControllerUser’sGuide381333–126
forATSstatusdisplaymessages,timedelays,pickup
&dropoutsettings,andadjustments.
WARN
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SECTION1 INSTALLATION The ASCO 7000 Series Automatic Closed–Transition Transfer &Bypass–Isolation Switch(ACTB) consistsof an upper bypass–isolation switch, a transfer switch, a monitoring and transfer controller, and door–mounted controls. The ACTB is factory wired and tested. Installation requires removal of the shipping skid then securingtheenclosuretothesupportingfoundation. Remove the Shipping Skid Openthefrontlowerdoorandremovethetwofrontlag screws securing the enclosure to the wood skid. N
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INSTALLATION (continued) BusConnections If bus connection is used, use SAE grade5 hardwareto De–energizetheconductorsbeforemakingany connect bus to appropriate terminal plates on bypass line or auxiliary circuitry connections. Be sure switchingdevice. Wipe offbus surfacesbefore theyare that Normal and Emergency line connections joined. If bus is dirty, gently clean surfaces with a areinproperphaserotation.Placeenginegen- non-flammablesolvent.Avoidtouchingcleanedsurfaces. eratorstartingcontrolint
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(continued) INSTALLATION GREEN RED RED RED RED observe these lights GREEN RED Figure 1-3. Standard controls and indicators. Close the normalsource circuit breaker. The Transfer Switch FunctionalTest 1 Connected To Normal and the Normal Source Accepted lights Read all instructions on the Wiring Diagrams and labels should come on. affixedtotheACTB. Notethecontrolfeaturesthatare providedandreviewtheiroperationbeforeproceeding. Use an accurate voltmeter to AfterinstallingtheACTBcheckthefollowing: ch
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INSTALLATION (continued) GREEN RED RED RED RED observe operate these lights this switch GREEN RED Figure 1-4. Standard controls and indicators. Turn and hold Transfer Control switch clockwise to Transfer 2–ElectricalOperation Test untilthe engine starts 1 and runs (within 15 sec.). The Load Thisprocedure checkselectricaloperationof the ATS. Disconnect Active Emergency Source Accepted light should come on. Besureto closetheenclosuredoor Transfer switch CE closes and before proceeding to preventpe
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SECTION2 TESTING&SERVICE TRANSFER TEST REPLACEMENTPARTS Test the Automatic Closed–Transition Transfer Switch Replacement parts are available in kit form. When or- portionofthe7000SeriesACTBatleastonceamonth. deringpartsprovidetheSerialNo., BillofMaterialNo. This procedure checks the electrical operation of the (BOM),andCatalogNo.fromthetransferswitchname- TransferSwitchandControlPanel. TurntheEngineCon- plate.ForservicecallASCOServicesat1–800–800–2726; trolswitchtoAutoandputtheengine–generatorst
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TESTING&SERVICE (continued) TROUBLE-SHOOTING Note any optional accessoriesthat maybe furnishedon theACTBandreviewtheiroperation.Refertoanysepa- rate drawings and/or instructions that may be packed Hazardousvoltagecapableof causing shock, burns, ordeathis used in this switch. withtheACTB. Do nottouchthepowerorload terminals ofthebypassswitchortransferswitch! Table2-1. Trouble-Shooting Checks. CHECK IN NUMERICAL SEQUENCE P PR RO OB BL LE EM M 1OPERATION 2 GEN-SET 3VOLTAGE Engine–generatorsetdoes H
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SECTION3 BYPASSING&ISOLATING BYPASSING THE ATS* This procedure explains how to Bypass the closed Youcanonly bypassto thesamesource automatictransferswitchcontacts. Bypassingisrequired thatthe Transfer Switchis connected. before the ATS can be tested or isolated. The Bypass Solenoid interlockprevents incorrectoperation. HandlemustbeintheOPENposition (greenindicator) 1. ObservewhichTransferSwitch ConnectedTo light is and the Isolation Handle must be in the CLOSED on (Normal or Emergency) on the do
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BYPASSING&ISOLATING (continued) ISOLATING THE ATS position Isolating is required before any service work can be window performedontheautomatictransferswitch(ATS).Refer CONN toFigures3–4, 3–5, 3–6, and3–7. TEST ISOLATE 1. Bypasstheclosedautomatictransferswitchcontacts. See BYPASSINGonpage3–1. unfold Align position indicator. Do notleave crank thehandleinanintermediateposition. 2. TurntheIsolationHandlecounterclockwise(approx. 16 turns)untilwindowshowsTEST.TheATScanbe testednowwithoutloadinterrupt
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BYPASSING&ISOLATING (continued) RETURNTOSERVICE This procedure explains how to return the automatic Solenoid interlock prevents you from closing transfer switch (ATS) to service after inspection and the isolation contacts until the ATS is in the maintenance. ObservetheBypassSwitchPositionindica- samepositionastheBypassSwitch. torandlights).RefertoFigures3–7,3–8,3–9,and3–10. 3. Observe which Bypass Switch Position indicator is black (NORMAL or EMERGENCY)attheBypass 1. Slide the transfer switch (A
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BYPASSING&ISOLATING (continued) RETURNTOSERVICE continued* ThisprocedureexplainshowtoreturntheBypassSwitch Youcanonly bypassto thesamesource HandletotheOPENposition. TheBypassHandlemust thatthe ATS is connected. Solenoid be in the CLOSED position (yellow indicator on NOR- interlockprevents incorrectoperation. MALorEMERGENCY)andtheIsolation Handlemust 1 Observe which Bypass Switch Position indicator is beintheTESTposition(window).Ifthehandlesarenot yellow (NORMAL or EMERGENCY)attheBypass inthesep
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INDEX A I R AlarmResetpushbutton, 1–4, 2–2 ratinglabel, cover inspection, 3–1 auxiliarycircuits,1–2 removalofshippingangles, 1–1 installation, 1–1 removalofshippingskid, 1–1 B isolatingtheATS,3–2 replacementparts,2–1 busconnections, 1–2 returntoservice, 3–3 bypassingtheATS, 3–1 L S lights, 1–3, 1–4 C service lubrication,2–1 catalognumber, cover ASCOServices,Inc.(ASI),2–1 cleaning, 2–1 settings see ControllerUser’s Guide M closed–transitiontransfer, 1–4 shippingangles, 1–1 connections maintenance
