24 S&C Instruction Sheet 682-510
Operation
Figure 41� The VOLTAGE indicator circuitry�
Figure 42� Each VOLTAGE indicator is provided with three
PHASE indica tors—one for each phase�
PHASE indicators show presence of
voltage at associated bushing
Checking for Voltage Using Optional
VOLTAGE Indicator
STEP 1� Clean the surface of the VOLTAGE indicator to
remove dirt and debris. See Figure 40.
STEP 2�
Check the PHASE indicators to determine
whether there is any voltage at the associated
bush ings. See Figure 41. A ashing lightning
bolt in the PHASE indicator means voltage is
present at the bushing. A blank indicator means
either:
• There is no voltage at the bushing.
• The VOLTAGE indicator is malfunctioning.
If any of the PHASE indicators are blank,
proceed to Step 3 on page 25 to test the VOLT AGE
indicator for proper operation. See Figure 42.
WARNING
Before using a voltage indicator, ALWAYS test for
proper operation� If the voltage indi cator is not operating
properly, test for volt age using an alternate method�
Failure to follow this precaution can result in an
injury or equipment damage�
Before using the VOLTAGE
indicator, thoroughly clean the surface
Figure 40� The VOLTAGE indicator with the Test feature�
TEST window PHASE indicatorPhotocell TEST button
Flashing lightning bolt indicates presence of
voltage at the associated bushing
A blank LCD panel indicates an absence of voltage
at the associated bush ing, provided the VOLTAGE
indicator circuitry has been tested and determined
to be operating prop erly�
NOTICE
When cleaning the surface of the VOLTAGE indicator,
make sure the TEST button is thoroughly cleaned of
dirt and debris� If light is blocked from the photocell
and the sun is bright enough to power the test cir cuit,
the VOLTAGE indicator will be in the Test mode and
may give a false indication that all three phases of the
associated load-inter rupter switch or fault interrupter
are ener gized� The Test mode is indicated by a dot
in the Test window�
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