S&C Mark VI, Instruction Sheet

Page: 7 / 28

S&C Instruction Sheet 712-501 7
Indicators
Understanding the
Interrupter Indicators
An indicator is located on the underside of each
interrupter .
The indicators are not meaning-
ful while the interrupters are being closed
and charged.
Wait for the inter rupter charging
motors to cease operation before checking
indicator position . The inter rupters will be
automatically closed and charged following an
opening operation .
If the interrupter is “CLOSED and
CHARGED,” the indicator reads “CLOSED .”
See Figure 3 .
If the interrupter is “OPEN and DIS-
CHARGED,” the indicator reads “OPEN .” See
Figure 4 .
During normal operation, the interrupter
indicators will only read “OPEN” for a brief
moment after the interrupters have tripped—
before the interrupter charging motors begin
closing and charging the interrupters . If the
manual trip device (Catalog Number Suf-
fix “-T”) is furnished, the interrupters will
read “OPEN” after a manual trip operation .
Refer to the instructions for using the manual
trip device in Steps 8 through 10 starting on
page 15 .
Figure 3. The interrupter is “CLOSED and CHARGED.” The indicator
reads “CLOSED.”
Figure 4. The interrupter is “OPEN and DISCHARGED.” The indicator
reads “OPEN.”
“OPEN and DISCHARGED”
“CLOSED and CHARGED”