Voltage Selection Adjustment; Wiring; Engine Start Connection; Alarm Contacts (Closed Transition Only) - Eaton Cutler-Hammer O & M Manual
Fixed spb automatic transfer switch
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Also See for Cutler-Hammer:
- Instruction leaflet (16 pages) ,
- Quick start instructions (8 pages)
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Page 14
4.6 VOLTAGE SELECTION ADJUSTMENT
Certain devices, such as the Voltage Selection Panel,
sensing relays and timers, need to be set and/or calibrated
prior to placing the transfer switch equipment into service.
Adjustments for logic devices are described in the separate
instructional document dedicated to the specific logic being
used. Voltage selection adjustments are described here.
!
BE SURE THAT THE CORRECT VOLTAGE IS
SELECTED TO MATCH THE SYSTEM VOLTAGE. AN
IMPROPER SELECTION AND/OR CONNECTION
COULD RESULT IN EQUIPMENT DAMAGE.
Table 4.1 Wire Size for Available Power Cable
Connections
Switch
Cables
Rating
(Amps)
Phase
800-2000
800-2000
2500-3000
2500-3000
4000
4000
CAUTION
Range
Per
Wiring Size
8
4/0-500 MCM
6
500-750 MCM
12
4/0-500 MCM
9
500-750 MCM
16
4/0-500 MCM
12
500-750 MCM
4.7 WIRING
!
POWER CONDUCTORS AND CONTROL WIRING
MAY HAVE VOLTAGE PRESENT THAT CAN CAUSE
SEVERE PERSONAL INJURY OR DEATH. DE-
ENERGIZE ALL POWER OR CONTROL CIRCUIT
CONDUCTORS BEFORE BEGINNING TO PERFORM
ANY WIRING ACTIVITY TO OR WITHIN THE TRANS-
FER SWITCH EQUIPMENT.
Power sources, load conductors and control wiring
should be connected to locations as indicated in the
Customer Wiring Diagrams supplied with the transfer
switch equipment.
4.7.1 ENGINE START CONNECTION
The engine control contact connections are located on
the lower right of the transformer panel of the ATS
(Figure 3-5). Connect the engine start wires to the red
terminal blocks marked 51 and 52. A contact closes
between these terminal blocks when an engine start sig-
nal is provided by the ATS logic.
4.7.2 ALARM CONTACTS (CLOSED TRANSITION
ONLY)
Closed transition automatic transfer switches are provid-
ed with 4 N.O. and 4 N.C. contacts (KA) for remote
alarming. These contacts are energized when the
TDUP (Time Delay Utility Parallel) times out (preset by
user). The TDUP timer starts timing when both sources
are paralleled. Refer to the IQ Transfer instruction book
for additional alarms.
IB01602002E
CAUTION
Effective 10/02
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