22 S&C Instruction Sheet 682-510
Operation
A flashing
lightning bolt
indicates
presence of
voltage at
the
associated
bushing
A blank LCD
panel indicates
absence of
voltage at
associated
bush ing
provided the
VOLTAGE
indicator
circuitry has
been tested
and deter mined
to be operating
properly
Figure 39. Voltage indicator circuitry.
Figure 40. 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 of
dirt and debris. See Figure 38.
STEP 2.
Check the PHASE indicators to determine
whether there is any voltage at the associated
bush ings. See Figure 40. A fl ashing lightning
bolt in the PHASE indicator means voltage is
present at the bushing. See Figure 39. 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, pro-
ceed to Step 3 on page 23 to test the VOLT AGE
indicator for proper operation. See Figure 40.
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 .
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 .
Figure 38. VOLTAGE indicator with the Test feature.
Photocell
TEST button
PHASE indicator
Before using the VOLTAGE indicator, thoroughly clean the surface
TEST window
Indicators
