Rockwell Automation 7763 Medium Voltage OneGear SMC Flex Motor Controller (10-15 kV) - Manual (Page 104)

104 Rockwell Automation Publication 7760-UM001D-EN-P - October 2014
Chapter 8 Troubleshooting
12 kV Voltage Sensing Board (VSB)
a. Place the assembly on a flat surface (table or bench) and disconnect the
wires from the six channels at the end of the VSB. Cut the cable ties and
remove the wires from the assembly.
b. Install the wires on the new assembly in the same positions and secure
them with cable ties at the ends of the wire guide channels.
Figure 42 - Sensing Board High Voltage Wire Connections
14.4 kV Voltage Sensing Board (VSB)
c. Place the assembly on a flat surface (table or bench).
d. Remove the nylon screws that secure the insulation shrouds from the
ends of the VSB channels, and remove the shrouds.
e. Disconnect the wires from the six channels at the end of the VSB. Cut
the cable ties and remove the wires from the assembly.
f. Install the wires on the new assembly in the same positions and secure
them with cable ties at the ends of the wire guide channels.
g. Re-install the insulation shrouds with nylon screws, torque to 0.3 N•m
(2.7 lb•in).
Mounting Hardware
Cable Ties
Mounting Hardware
Wire Guide Channels
High Voltage Wires
ATTENTION: The insulation shrouds are required to prevent insulation
breakdowns due to surge voltages. Failure to replace all six covers with nylon
hardware before energizing may result in personal injury, property damage or
economic loss.