PowlVac
®
Electrically-Operated Ground and Test Device
IB-65060
20
B. PROCEDURE FOR TESTING FEEDER
The CON EDISON and CUSTOMER ground and test
devices are supplied with similar interlock functions.
However, the CON EDISON device uses key KU for
key lock K1, and the CUSTOMER device uses key
KCF for key lock K1. Key KU and Key KCF are NOT
INTERCHANGEABLE.
Although these operating procedures contain illustra-
tions of the CON EDISON device, these procedures
also apply to the CUSTOMER device. For proce-
dures that refer to key KU for the CON EDISON
device, the same procedures apply to key KCF for
the CUSTOMER device.
Perform the following steps:
1.
Verify the Con Edison ground and test device is
being inserted in the compartment of the feeder
to be grounded.
•
The ground and test devices are prominently
marked “Con Edison” or “Customer.”
•
Interference plants (Figure 2, e) prevent either
of the ground and test devices from being
inserted into an unauthorized compartment.
2.
Obtain key KU from the Con Edison lock box.
3.
Insert key KU into key lock K1 and rotate key KB.
(Figure 31). Key KU is captive and has electri-
cally disabled the ground and test device while in
the OPEN position. Key KB is now available
(Figure 32).
4.
Insert key KB into key lock K2 and rotate key KC
(Figure 33). The ground and test device is now
mechanically locked OPEN. Key KB is now
captive and key KC is available.
5.
Insert key KC into key lock K3 and rotate. Key
KC key is now captive (Figure 34). Pull the
racking access interlock handle out fully.
6.
Insert the ground and test device into the com-
partment until a “stop” is encountered (no figure
provided).
7.
Depress the manual trip operator on the
switchgear compartment front panel and open the
racking access shutter (Figure 35).
8.
Rack the ground and test device into the CON-
NECTED position using the supplied torque
limiting racking handle. A mechanical position
indicator indicates the CONNECTED position (no
figure provided).
9.
Push the Racking Access Interlock handle in fully
and rotate key KC to lock the ground and test
device in the CONNECTED position. Key KC is
now available (Figure 36).
10. Transfer key KC to key lock K2 and rotate (see
Figure 37). The key KC is now captive and key
KB is available. The ground and test is now
mechanically unlocked.
11. Transfer key KB to key lock K1 and rotate (Figure
38). The ground and test device control circuit is
now enabled. Key KB is captive and key KU is
available.
12. Verify that the Control Selector Switch is in the
OFF position (Figure 39).
13. Connect the Remote Operating Station to the
ground and test device and rotate the plug
clockwise to lock (Figure 40).
14. Connect the compartment secondary disconnect
to the receptacle on the ground and test device
(Figure 41).
15. Move the Control Selector Switch to the CLOSE
position (Figure 42).
16. Turn the Remote Operating Station ON and
depress the CLOSE push button switch on the
Remote Operating Station to close the ground
and test device (Figure 43).
17. Move the Control Selector Switch to the OFF
position (Figure 44).
18. Turn the Remote Operating Station OFF and
disconnect the Remote Operating Station umbili-
cal cord from the ground and test device (Figure
45).
19. Rotate key KB in key lock K1 electrically dis-
abling the ground and test device. Remove key
KB from key lock K1 (Figure 46).
20. Transfer key KB to key lock K4 and rotate key KD
(Figure 47). The ground and test device is now
electrically and mechanically locked in the
CLOSED position. Key KB is captive and key
KD is available.
21. Transfer key KD to key lock K5 and rotate (Figure
48). Key KD unlocks the test port shutters.
22. Open the test port shutters using the slide handle
(Figure 49). With the test ports, 2/3 open, key
KD remains captive.
23. Install the test probes into the test ports (Figure
50). Move the test port shutter to the left to
capture the test probes in the test probe shutter.
