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Low
Vohoge Swifchgeor, GEK-72101
It
is
imperative
that
all
cables be
adequately
supported
to
take
their
weight off terminals
and studs, and
to
prevent
movement
during
short circuit.
Train
the
cables
in
the proper path
to
the
terminals,
using
temporary
lashing
if
required,
and cut
to
the
proper length.
Strip
the insulation
to
the
desired dimension, being
careful
not
to
damage
any
strands.
For
copper cables,
coat
the
cables
with
D50H47
grease,
insert
the
cables
into the
terminals and tighten
the
set
screws
in
accordance
with
values
shown
in
Table
B.
For
aluminum
cables.
wire brush the cable
strands
thoroughly. Immediately after wire
brushing, coat the
cable
strands
with a quality
oxide
inhibiting
compound such
as
Penetrox
A. (or
other
similar
oxide
inhibiting
compound).
Insert
cables
into
the terminals and tighten
the
set
screws
in
accordance
with
values shown
in
Table
B. This
should
result
in
the
oozing
of
compound
from
between
individual
strands.
Wipe off
the
excess
compound.
Bolt
the
cable
terminal
connectors
to the
ends
of the
bars
in
the
cable
compartment.
A
non-oxidizing
lubricant
(such
as
D50H47
furnished
with
each
equipment)
can be used
at
these
connection
surfaces,
Lash the
cables
permanently to
the cable supports.
11.
Remove
the
lifting
brackets
from the
front
and
rear
channels.
If
equipment
is
furnished
with "add-on"
com-
partments, brackets
at
the rear cannot
be
removed.
And
Flat
Washer
1A_20
'll.s-
16
Yz-13
5/8_tl
12. Remove
all
blocking
on relays and
devlces.
13.
Make
a
finai
inspection
to
see
that
there
are
no tools,
construction materials,
or
other foreign
matter
left in
the
switchgear.
TABTE
B
TORQUE
VALUES
FOR CABLE TERMINALS
Wire
Size
6
Inch-
Pounds
100
100
100
Wire
Size
350,000
400,000
500,000
600,000
700,000
7s0,000
800,000
900,000
1,000,000
Inch-
Pounds
250
250
3
I
000
0000
200,000
250,000
300,000
1,250,000
1,500,000
1,750,000
2,000,000
0
00
150
150
125
tzJ
125
200
200
200
250
250
300
300
300
300
400
400
400
500
500
500
500
TABTE
A
TORQUE VALUES
FOR
LOW
VOLTAGE EQUIPMENT HARDWARE
(COPPER
OR
ALUMINUM)
Bolt
Size
Foot
Pounds
With Prevailin{
Totque
Locknut
With
Finished Machine
Nut
ical Sprin(
Washer
And
Flat
Washer
Washer
And
FIat
Washer
Or
Flat
Washer
OnIy
10
30
42
J)
l3
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