Summary of the content on the page No. 1
7000 Series 7ADTB
Operator’s
Automatic Delayed–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 ADTB 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.
WAR
Summary of the content on the page No. 2
SECTION1 INSTALLATION The ASCO 7000 Series Automatic Delayed–Transition Transfer & Bypass–Iolation Switch (ADTB) consists of an upper bypass–isolation switch, a transfer switch, a monitoring and transfer control panel, and door– mounted controls. The ADTB is factory wired and tested. Installationrequiresremovaloftheshippingskid then securing the enclosure to the supporting founda- tion. Remove the Shipping Skid Openthefrontlowerdoorandremovethetwofrontlag screws securing the enclosure to the woo
Summary of the content on the page No. 3
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
Summary of the content on the page No. 4
(continued) INSTALLATION GREEN RED observe these lights GREEN RED AMBER Figure 1-3. Standard controls and indicators. Close the normalsource circuit breaker. The Transfer Switch FunctionalTest 1 Connected To Normal and the Load Disconnect Normal Source Accepted lights Active Read all instructions on the Wiring Diagrams and labels should come on. affixedtotheADTB. Notethecontrolfeaturesthatare providedandreviewtheiroperationbeforeproceeding. Use an accurate voltmeter to AfterinstallingtheADTBchec
Summary of the content on the page No. 5
INSTALLATION (continued) GREEN RED operate this switch observe these lights GREEN RED AMBER 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 CN opens and before proceeding to preventpersonal
Summary of the content on the page No. 6
SECTION2 TESTING&SERVICE TRANSFERTEST REPLACEMENTPARTS Test the AutomaticDelayed–Transition TransferSwitch Replacement parts are available in kit form. When or- portionofthe7000SeriesADTBatleastonceamonth. deringpartsprovidetheSerialNo., BillofMaterialNo. This procedure checks the electrical operation of the (BOM),andCatalogNo.fromthetransferswitchname- TransferSwitchandController. TurntheEngineControl plate.ForservicecallASCOServicesat1–800–800–2726; switchtoAutoandputtheengine–generatorstartin
Summary of the content on the page No. 7
TESTING&SERVICE (continued) TROUBLE-SHOOTING Note any optional accessoriesthat maybe furnishedon the ADTB and review their operation. Refer to any separatedrawingsand/orinstructionsthatmaybepacked Hazardousvoltagecapableof causing shock, burns, ordeathis used in this switch. withtheADTB. Do nottouchthepowerorload terminals ofthebypassswitchortransferswitch! Table2-1. Trouble-Shooting Checks. CHECK IN NUMERICAL SEQUENCE PROBLEM 1 2 3 OPERATION GEN-SET VOLTAGE Engine–generatorsetdoes Hold Transfer
Summary of the content on the page No. 8
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
Summary of the content on the page No. 9
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
Summary of the content on the page No. 10
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 samepositionastheBypassSwitch. maintenance. ObservetheBypassSwitchPositionindica- 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
Summary of the content on the page No. 11
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
Summary of the content on the page No. 12
INDEX A I R ratinglabel, cover auxiliarycircuits,1–2 inspection, 3–1 removalofshippingangles, 1–1 installation, 1–1 removalofshippingskid, 1–1 B isolatingtheATS,3–2 replacementparts,2–1 busconnections, 1–2 returntoservice, 3–3 L bypassingtheATS, 3–1 lights, 1–3, 1–4 S loadconnectedtoemergency,1–5 C service loadconnectedtonormal, 1–4 catalognumber, cover ASCOServices,Inc.(ASI),2–1 LoadDisconnectActivelight,1–4 settings cleaning, 2–1 seeControllerUser’s Guide connections lubrication,2–1 shippingan
