Product Manual

TP-6946 3/16 15Section 2 Installation
2.3 Multi-Tap Voltage Capability
The transfer switch voltage is factory-set. Check the
nameplate and confirm that the transfer switch has been
configured for the correct system voltage prior to
installation.
Note: Verify that the transfer switch voltage matches
the system voltage.
The transfer switch has multi-tap voltage capability at
the voltage transformers. See Figure 2-3 for a typical
transformer assembly. Figure 2-4 shows typical
connections. Refer to the wiring diagram provided with
the transfer switch for complete connection information
for your model.
To change the transfer switch voltage configuration, if
necessary:
D Before connecting power to the transfer switch,
change the voltage taps of the potential transformers
(PT’s) to match the system voltage. Refer to the
wiring diagram provided with the transfer switch.
D After the voltage taps have been set to correct
operating voltage, but before applying power to the
transfer switch, connect the contactor harness to the
controller through the control circuit isolation switch
on the transformer assembly. See Figure 2-3 and
Section 2.8.
D When power is connected to the ATS controller,
change the system voltage setting on the controller.
Refer to the transfer switch controller Operation
Manual, provided with the ATS, for instructions. See
the List of Related Materials in the Introduction
section for the document part number.
D Order a new nameplate from the Aftermarket Parts
department. Provide the ATS model and serial
numbers and the new voltage setting.
1. Cover (remove for access)
2. Engine start connection
3. Control circuit isolation switch
4. Voltage transformers
GM94796-1
4
1
2
3
Figure 2-3 Transformer Assembly, Typical (MCCB
Service Disconnect to OFF unit shown)
GM95677
Figure 2-4 Typical Voltage Tap Connections (Refer to the wiring diagram provided with the ATS.)