Eaton VCPW-HD Instruction Booklet page 6

Instruction Booklet IB131024EN
Effective November 2017
Disabled
Figure 15. Electrically disabled with key KU retained. Electrically
enabled with key KB retained.
2.4.2 Lock #2 (keys KB and KC)
The Lock #2 interlock is a two cylinder lock used to mechanically lock
the 38 kV SEG&TD in the "Open" position. The device is locked in
the "Open" position when key KB is in the "Unlocked" position and
key KC has been rotated to the "Locked" position and removed from
the lock (see Figure 16).
Figure 16. Lock #2 locks the SEG&TD in the "Open" position
with key KB retained.
2.4.3 Lock #3 (key KC)
The Lock #3 interlock is a single cylinder lock that, when locked, pre-
vents the 38 kV SEG&TD from insertion into, or removal from, the
switchgear compartment.
In this design, the Lock #3 in the locked position (lock pin extended)
blocks the 38 kV SEG&TD slide handles from being moved to allow
insertion into or removal from the SEG&TD (see Figure 17). Key KC
is removable from Lock #3 when the lock bolt is extended.
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Figure 17. Lock #3 with the locking pin extended and the slide
Enabled
handles locked in position.
N
2.4.4 Lock #4 (keys KB and KD)
The Lock #4 interlock is a two cylinder lock used to mechanically lock
the 38 kV SEG&TD in the "Closed-Grounded" position.
In this design, the Lock #4 interlock is a two cylinder lock used with
the "Closed Locking Device" to prevent the 38 kV SEG&TD from
being opened. When the SEG&TD is in the "Open-Ungrounded"
position, the "Closed Locking Device" is disabled. Key KD is
retained when the lock pin is retracted. When the SEG&TD is
"Closed-Grounded" , the "Closed Locking Device" is free to move
to the right. The lock bolt can now be extended and the "Closed
Locking Device" will be held in the secured "Closed-Grounded" posi-
tion. Key KD is now removable from Lock #4 (see Figure 18).
Figure 18. Lock #4 locks the SEG&TD in the "Closed-Grounded"
position with key KB retained.
In this secured position, the "Closed Locking Device" has blocked
the ability to depress the red manual "Push to Open" button (refer-
ence location Figure 22). Also, in this secured position, the Selector
switch electrically disables the Remote Operating Control "Open"
function; and a mechanical interlock holds the main contacts in the
closed position even if the mechanism is tripped. A padlock hasp
is provided for securing the "CLOSED-Grounded" position with a
customer-supplied padlock for purpose of "Lockout Tag Out" (see
Figure 19).
38 kV Type VCPW-HD Simple Electrical
Ground & Test Device (SEG&TD) lower
otee: Key KC normally resides in Lock #2 when not being used in Lock #3.
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