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4-9 Secondary Coupler
On the top left front of the breaker, there is a
plastic block which holds the male secondary
coupler pins. This block should make contact
with, and slightly raise a spring loaded plastic
block which holds female secondary coupler
sockets on the switchgear. The contact depres-
sion should be 1/8". It is not always possible
to have the plastic blocks in contact over their
entire flat surface. Often, the rear of the blocks
are engaged while a gap exists along the front
edge. This is an acceptable condition. The con-
tacting block surfaces should touch and the fe-
male block edge move upward between1/32" to
1/8". See Figure 11.
1
2
Courtesy of NationalSwitchgear.com
4-10 Position Switch (TOC)
The position switch is an optional device
mounted in the rear left side of the switchgear
cubicle. The switch contacts operate when the
lifting mechanism is in either the fully raised or
fully lowered position. Switch operation should
be checked with the breaker withdrawn manu-
ally and the equipment de-energized, and again
electrically, with the breaker in the cubicle.
1
Secondary disconnect block shims
2
16 Secondary disconnect pins
3
Ground pin for use with a test cabinet
Figure 11. Secondary disconnect coupler
17
PowerVac
5kV Vertical Lift
®
Chapter 4. Installation
3
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