Manual 0-4691
3-3
INSTALLATION
3
C. Connections to 400Volt or 460-Volt Single - Phase Power
The 400-Volt and 460-Volt Power Supplies will accept Single-Phase input power with a change of input power cable.
1.
Remove the Power Supply cover per section 5.09-A.
2.
Disconnect the original input power cable from the main input contactor and the chassis ground connection.
3.
Loosen the through-hole protector on the back panel of the power supply. Pull the original power cable out of the power
supply.
4.
Pass a customer-supplied, three-conductor input power cable through the access opening in the back panel of the power
supply. Refer to Section 2 for power cable specifications.
CAUTION
The primary power source and power cable must conform to local electrical code and the recommended circuit
protection and wiring requirements (refer to table in Section 2.03).
5.
Strip back the insulation on the individual wires.
6.
Connect to main input contactor as follows:
• Line 1 wire to terminal L1.
• Line 3 wire to terminal L3.
7.
Connect the ground wire to Ground (Earth). The Ground wire connection requires a ring terminal.
8.
Tighten the through-hole protector to secure the power cable.
A-03041
L1
L3
Ground Wire
with Ring
Terminal
Main Input
Contactor
Input Cable
L1 L2 L3
Input Power Connections, 400 VAC or 460 VAC Single-Phase
9.
Replace the Power Supply cover.
10. Connect the input power cable (or close the main disconnect switch) to supply power to the system.
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