Powell PowlVac ARG 4 Series, Инструкционный бюллетень

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18 Equipment Description
01.4IB.50023A PowlVac® Electrically Operated 15kV Ground and Test
per Long Island Railroad Specifications
k. c
ontrol
r
elAy
The control relay is mounted on the left hand
mechanism enclosure side sheet, near the top
(Figure 3, e) .
l. t
rIp
p
Addle
I
nterlock
S
WItch
The trip paddle interlock switch is mounted
just above the floor pan of the ground and
test device, at the rear of the trip paddle
mechanism. The switch is opened whenever
the trip paddle is pushed. The switch opens
the electrical closing circuit, blocking electrical
closing of the grounding switch when the trip
paddle is pushed.
m. r
emote
c
ontrol
B
ox
The ground and test device draws its operating
power through a control box connected to the
ground and test device. The control box
(Figure 8) contains a line fuse and a close
push button. The control box is connected
to the ground and test device by a 20 foot,
four-conductor power cord. The cord is
permanently attached to the control box, with
a four-conductor twist-lock type receptacle at
the ground and test device end.
Figure 8 Remote Control Box
n. k
ey
l
ockS
The ground and test device is provided with
numerous key lock interlocks and include:
1) Key Lock “K1” (Key KA)
The key lock “K1” interlock is a one cylinder
lock used to electrically enable or disable
the ground and test device.
Key lock “K1” interlock is a one cylinder
transfer lock equipped with an electrical
switch element. The switch is closed when
key “KA” is retained. When the switch
is “OPEN”, the ground and test device
is electrically disabled and cannot be
electrically or mechanically tripped “OPEN”.
2) Key Lock “K2” (Keys KA and KB)
The key lock “K2” interlock is a two cylinder
lock used to electrically enable or disable
the ground and test device.
In the PowlVac ground and test device
design, the locking bolt of key lock “K2”
interlock can not be extended unless the
ground and test device is in the “CLOSED”
position. The key lock “K2” interlock is
equipped with an electrical switch element
that electrically blocks a closing command.
The key lock “K2” interlock is operable only
when key “KA” is inserted and the ground
and test device is “CLOSED”. When the key
lock “K2” interlock is operated with the
locking bolt extended, the closing function
is electrically disabled and key “KA” is
retained and key “KB” is released.