Rockwell Automation 7703E Medium Voltage SMC OEM Components - 10-15 kV - Manual (Page 21)

Rockwell Automation Publication 7703E-IN001E-EN-P - July 2014 21
PowerBrick™ Installation Chapter 3
Voltage Sensing Board
Dimensions Figure 7 - Voltage Sensing Board Dimension Diagram
Mounting and Connecting
the Voltage Sensing Board The voltage sensing board (VSB) for the relevant voltage range (see table below)
should be mounted adjacent to the PowerBrick (refer to
Figure 7 for
dimensions). All connection points are to be made accessible.
Connect the voltage sensing board to the L1 to L3 (Line) and T1 to T3 (Load)
terminals of the power stack (refer to
Figure 8 and Chapter 6 ).
Recommended specifications for wire used on medium voltage connections: UL
style 3239, #18 AWG, 40 KVDC silicone rubber insulated wire, covered with
PCV tubing or other suitable material.
8.9 [0.35]
4 holes
Includes features to secure
HV wire for maintained spacings.
Approximate dimensions in mm [inches]
Description Line Voltage
(3 phase, 50/60 Hz) MV Ratio Catalog Number
Voltage Sensing Board
10,000…12,000V 126 7703E-VSM
12,001…14,400V 97 7703E-VSN
IMPORTANT The wires must be prevented from touching live or grounded metals, and low
voltage wiring, or have supplemental insulation suitable for the application.
Use the tapered features below the Lx and Tx terminals to maintain wire
spacings in this area.