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Types SDV-R and SDV-R-AR distribution circuit breakers |
Instruction manual
Cleanliness check
Figure 23 is a side view of the type SDV-R
distribution circuit breaker showing the
vacuum interrupters, bus connections, and
roof bushings. All of these components must
be cleaned and free of dirt or any foreign
objects. Use a dry lint-free cloth. For stubborn
dirt, use a clean cloth dipped in isopropyl
alcohol (except for cleaning the vacuum
interrupters). For stubborn dirt on a vacuum
interrupter use a cloth and warm water and a
small amount of mild liquid-household
detergent as a cleaning agent. Dry thoroughly
using a dry lint-free cloth.
Also, inspect the bus work for any evidence of
loose bolts, bushings for any evidence of
damage, and flexible connectors for tightness
and absence of mechanical damage, burning,
or pitting.
Checks of the stored-energy operator
mechanism
The stored-energy operator checks are
divided into mechanical and electrical checks
for simplicity and better organization. The
first series of checks determine if the basic
mechanism is clean, lubricated and operates
smoothly without control power. The contact
erosion check of the vacuum interrupter is
also performed during these tasks.
Figure 23: Side view of type SDV-R distribution circuit breaker
Item
Description
A
Bushings
B
Bus
C
Vacuum interrupter
A
A
B
B
C
C
