Connect The Gnd Wire Of The Ac Power Cable - ABB HVC Installation Manual

HVC 450 kW E-Bus Charger Installation Guide

5.6.2. Connect the GND wire of the AC power cable

Preconditions:

Tools: wire cutter, wire stripper pliers, wire-end ring, spanner (size 19), torque wrench
(size 19).
Make sure that the main switch of the power supply group for the product
is set to the OFF position. Do a voltage check to make sure that the
electrical power is disconnected from the system.
1. Make a loop in the GND wire.
For safety, it is recommended to make a loop in the GND wire so it is
longer than the phase wires. This loop makes sure that the GND wire is
not the first wire that is disconnected if the Power Cabinet is moved by a
collision.
2. Cut the GND wire of the AC power cable to the correct length to reach the GND rail. Do
not make the wire routing too tight, or too loose.
3. Strip 0.79 Inch of the insulation from the end of the GND wire.
4. Attach a wire end ring (A) to the end of the GND wire (B).
5. Remove the M12 bolt, nut and washers from the GND rail.
6. Fit the bolt (C) with toothed washer (D), the GND wire (B) and the contact washer (E).
7. Insert the bolt fitted with the GND wire into the GND rail.
8. Screw from the bottom of the GND rail a toothed washer (D) and a nut (F) on the bolt (C)
9. Tighten the bolt/nut connection with a tightening torque of 22.13 ft-lb.
Revision: 1.2
Date released: 16-08-2018
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