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6.10
Mounting the High Voltage Terminal Pads
REV7
/REV7
The high voltage terminal pads are shipped in the box containing
the accessories. The high voltage terminal pads may be mounted
either on the front or the rear of the circuit breaker, as desired. Oxi-
de films can form on the terminal pad mounting plates and the high
voltage terminal pads during transport and storage, and these films
can result in higher contact resistances. Oxide films in the contact
areas must be removed before installation. Use a wire brush with
stainless steel bristles as the appropriate tool for this job.
• Brush the contact surfaces of the high voltage terminal pads (2)
and terminal pad mounting plates (1) until all oxide film has been
removed.
• Lubricate contact surfaces on both sides in accordance with
lubrication specification L3.
• Lubricate bolts per lubrication specification L1.
• Bolt the high voltage terminal pads to the terminal pad mounting
plates using three bolts each (4), washers (3) and nuts (5).
Tighten to a torque of 146Nm.
2
1
Terminal pad mounting plates
2
High voltage terminal pads
3
Washer, 16 A2
4
Hexagon bolt, M16x65 A2-70
5
Hexagon nut, M16 A2-70
OI 250 (EN)
4
1
3
5
I
NSTALLATION
1x
1x
6x
3x
3x
45 / 146
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