8 S&C Instruction Sheet 766-540
Operating Levers and Indicators
A mechanical block is inserted into each actuator mechanism that prevents closing,
even if a malfunction causes the actuator closing coil to be energized. The lever can be
tagged or padlocked in the
Open
position. Moving the lever back to the
Ready
position
removes the mechanical block from the actuators.
CLOSE—
When the left section of the OPEN/CLOSE/READY lever is moved to the
Close
position, the IntelliRupter fault interrupter uses the closing protection profile to
electrically close the interrupters. This is a momentary contact and a spring forces the
lever to return to the
Ready
position when the lever is released.
Opening Interrupters—
Control power is not required. Follow these steps to open the
interrupters:
STEP 1.
Insert a hookstick into the hole in the right section of the OPEN/CLOSE/READY
lever. See Figure 3 on page 9.
STEP 2.
Pull down on the right lever section. The three interrupters will open.
STEP 3.
If desired, tag or padlock the lever in this position. See Figure 4 on page 9.
STEP 4.
Check the interrupter OPEN/CLOSE indicator. See Figure 5 on page 9. They
should show an “O” indication.
Closing Interrupters—
Control power is required. Follow these steps to close the
interrupters:
STEP 1.
Remove the tag or lock on the OPEN/CLOSE/READY lever, if applicable.
STEP 2.
If the lever is not already in the
Ready
position, then insert a hookstick into the
hole in the right lever section and push up on the right lever section. This places
the OPEN/CLOSE/READY lever in the
Ready
position.
STEP 3.
Remove the hookstick and insert it into the hole in the left lever section. To use
the
First Closing Profile
feature, pull down
once
on the left lever section. The
three interrupters will close.
STEP 4.
To use the
Second Closing Profile
feature, pull down
twice
on the left lever
section within the time set for the
Manual Lever Closing Delay
timer.
STEP 5.
Check the interrupter OPEN/CLOSE indicators. See Figures 5 and 6 on page 9.
They should show the “I” indication.
