I.B. 8295A61H03
Page 19
Effective 7/97
SECTION 4: INSPECTION AND
OPERATION
4-1 INITIAL INSPECTION
Before attempting to use or put a breaker into service,
examine it for loose or obviously damaged parts. In
addition, compare the breaker nameplate with associat-
ed drawings, shipping papers and ordering information
for compatibility. A breaker should also be operated
manually.
In the case of a drawout breaker application, an electri-
cal operations check will be performed later after the
breaker has been combined with its drawout truck, sec-
ondary wiring has been completed and an appropriate
structure with required interlocks provided. For fixed
breaker applications, an electrical operations check
should be performed after the breaker is appropriately
mounted, secondary wiring completed, and appropriate
interphase barriers installed.
4-2 MANUAL OPERATION CHECK
The breaker element should be on a solid, stable work
surface. Place the maintenance tool into the manual
charge socket opening and charge the closing springs
with approximately 38 up and down strokes of the han-
dle (Figure 3-7). When charging is complete, the closing
crank goes over center with an audible “click” and the
springs Charged/ Discharged indicator shows
“Charged”.
If the springs are to be charged on a closed breaker,
no click is heard at the end of the charging opera-
tion. Discontinue charging and remove the mainte-
nance tool as soon as the “Charged” flag is fully
visible.
Remove the maintenance tool. Close and trip the break-
er several times using the manual trip and close buttons
on the front of the circuit breaker (Figure 3-7).
4-3 INTERFACE VERIFICATION
It is the customer’s responsibility to insure that all dra-
wout circuit breakers interface and operate properly in
conjunction with their breaker compartments. This will
include but not be limited to verification that customer
supplied trucks interface correctly with Cutler-Hammer
supplied breaker elements and the customer’s complete
drawout circuit breaker interfaces properly with the
breaker compartment. All ANSI required interlocks
between the drawout circuit breaker and the breaker
compartment are the customer’s responsibility.
NOTICE
Summary of Contents for 150 VCP-WR 1500
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