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7000 Series ATS
Operator’s
Automatic Transfer Switches
Manual
J–design, 260, 400, & 600 A
Refer to the outline and wiringdrawings provided
with your 7000 Series ATS for allinstallation and
DANGER is used in this manual to warn of high
connection details and accessories.
voltages capable of causing shock, burns, or death.
Refer to Group 5 Controller User’s Guide
381333–126 for ATS status display messages, time
delays, pickup &dropout settings, and adjustments.
WARNINGisusedinthismanualto
warnof p
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Catalog Number Identification A typical Catalog Number is shown below with its elements explained. The example is for a 7000 Series 7ATS with overlappingneutral, 3 pole, 600 amp, 480 V, in a Type 1 enclosure: J 7ATS C 3 600 N 5 C design prefix letter Neutral PhasePoles Amperes Voltage Controller Enclosure A –solid 2–singleØ A 115 J 400 5–standard C –type1 260 B–switched 3–threeØ 400 5X–if F–type3R B 120 K 415 accessories 600 G–type4 C 208 C –overlapping L 440 ordered H–type4X blank–none D 220 M
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SECTION1 INSTALLATION ASCO 7000 Series AutomaticTransfer Switches (ATSs) Testing PowerConductors are factory wiredandtested. Fieldinstallationrequires Do not connect the powerconductorsto the transfer requires mountingand connection of service cables, switchuntilthey are tested. Installingpowercablesin andauxiliarycontrolcircuits(ifrequired). conduit, cable troughsandceiling-suspendedhangers oftenrequiresconsiderable force. The pullingof cables candamage insulationandstretchorbreakthe Remove the
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INSTALLATION (continued) Engine Starting Contacts Allcustomerconnections, includingthe engine control contact connections, are locatedonterminalblock TB whichismountedonthe topright side of the enclosure. Referto the wiringdiagramprovidedwith the automatictransferswitchandconnect the engine start wirestothe appropriate terminals. See Figure 1–1andTable A. Table A. Engine start connections. When normal source Terminals on fails Terminal Block TB contact closes TB1 and TB2 engine start contact ope
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INSTALLATION (continued) 1–Manual Operation Test left side of Adetachablemaintenancehandleisprovidedonthe transfer switch frameoftheTransferSwitchformaintenancepurposes only.Manualoperationof the transferswitchshouldbe checkedbefore it isenergized(operatedelectrically). Do notmanually operate the transfer switch until bothpower sources are disconnected: maintenance open bothcircuitbreakers. handle 1. Afterdeenergizingbothpowersources, openthe enclosure door. Locate andremove the mainte- nance ha
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INSTALLATION (continued) GREEN RED observe these lights GREEN RED Figure 1-4. Standard controls and indicators. Close the normal source circuit breaker. The Transfer Switch 2–VoltageChecks 1 Connected To Normal and the First check nameplate on transfer switch;rated voltage Normal Source Accepted lights should come on. mustbethesameasnormalandemergencylinevoltages. Use an accurate voltmeter to check phase to phase and 2 phase to neutralvoltages pres- Verify thatthe feeders have been entatthetrans
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INSTALLATION (continued) operate GREEN RED this switch observe these lights GREEN RED Figure 1-5. Standard controls and indicators. 3–ElectricalOperation The Transfer Switch Connected 1 To Normal and Normal Source This procedure willcheck the electricaloperation of Accepted lights should be on. the AutomaticTransferSwitch. See Figure 1–5. Turn and hold Transfer Control switch clockwise to Transfer Be sure to close the enclosure door Test untilthe engine starts 2 before proceeding to preventperso
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SECTION2 TESTING&SERVICE TRANSFER TEST DISCONNECTING THECONTROLLER Operate the 7000 Series ATS at least once a month by The harness disconnect plugs are furnished for repair followingthe five–step Electrical Operation Transfer purposes only and should not have to be unplugged. If Testprocedure on page 1–5. the controller must be isolated, follow these steps: Disconnecting the Plugs PREVENTIVEMAINTENANCE Reasonable care in preventive maintenance willinsure high reliability and longlife for the 70
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TESTING&SERVICE (continued) 2. Use the maintenance handle to manually operate MANUALLOADTRANSFER the transfer switch to the opposite source. See This procedure willmanually transferthe load if the Manual Operation on page 1–3. controller is disconnected. the maintenance handle. See page 1–3. 3. Then remove Do notmanually operate the transferswitch until bothpowersources are disconnected: Verify thatthemaintenancehandle has beenremoved before proceeding! openbothcircuitbreakers. 4. If the transfe
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INDEX A I P auxiliarycircuits,1–2 inspection, 2–1 parts, 2–1 installation, 1–1 phaserotationcheck, 1–4 C indicators, contactposition, 1–3 problem, 2–2 cable L lugs, 1–1 R preparation, 1–1 labels, ratinglabel, inside cover fieldterminalblockTB, 1–2 catalognumber, inside cover rating, insidefrontcover replacementparts, 2–1 cleaning, 2–1 lights, 1–4, 1–5 connections S lubrication,2–1 line, 1–1 settings contactpositionindicators,1–3 M see Controller User’s Guide controller, 1–1 maintenancehandle, 1–
