Powell PowlVac 38, Instruction Bulletin, Page: 24 / 35

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16 Installation
PowlVac 38™ CDS Electrically Operated
Ground & Test Device per ConEd Specification EO-2022-15
01.4IB.65090A
3) Control Voltage Insulation Integrity
If the user wants to check the insulation
integrity of the control circuit, it may be
done with a 500V or 1000V insulation
resistance tester or with an AC high
potential tester. The AC high potential test
should be made at 1125V, 50 to 60Hz for
one minute. The charging motor must be
disconnected prior to testing the control
circuit. The charging motor itself may be
similarly tested at a voltage not to exceed
675V, 50 to 60Hz. Be sure to remove any
test jumpers and reconnect the charging
motor when the tests are complete.
Remove all grounding conductors applied for
this test before placing the grounding device
back into service.
CAUTION
4) Electrical Operation Check
To check the basic electrical operation
check connect the secondary disconnect
plug to the ground and test device
secondary disconnect receptacle to
be tested (Figure 3, d) . The secondary
disconnect provides control voltage to the
ground and test device. The appropriate
control switches to verify the CLOSE and
OPEN functions of the ground and test
device are part of the ground and test
device remote control box. With the
secondary disconnect plug inserted in the
ground and test device being tested, and
with key KB captive, perform the following
steps:
a. Test the Closing Operation of the
Ground and Test Device
Perform the following to test the closing
operation of the ground and test device:
a. Connect the power cord of the
remote control box to the ground
and test device (Figure 3, n) .
Ensure the cord is locked into the
connected position by turning the
plug clockwise.
b. Verify that the control selector
switch on the front of the ground
and test device is in the “OFF”
(center) position (Figure 3, c) .
c. Move the control selector switch
from “OFF” position to “CLOSE”
position (Figure 3, c) .
d. Turn the remote control box to
the "ON" position (Figure 1, a) and
depress the “CLOSE” pushbutton
switch on the control box
(Figure 1, b) to close the ground and
test device ground making switch.
e. Move the control selector switch
from the “CLOSE” position to the
“OFF” position (Figure 3, c) .
b. Test the Opening Operation of the
Ground and Test Device
Perform the following to test the
opening operation of the ground and
test device:
a. Move the control selector switch to
the “OPEN” position (Figure 3, c) .
b. Turn the remote control box to
the "ON" position (Figure 1, a) and
depress the "OPEN" pushbutton
(Figure 1, d) to open the ground and
test device.
c. Move the control selector switch to
the "OFF" position (Figure 3, c) .