10 S&C Instruction Sheet 761-525
Installation
Mounting the Support Members
Follow these steps when mounting support members:
STEP 3.
Mount the support members (supplied by others
or ordered separately) on the structure for
the switch pole-units and the horizontal-pipe
bearing. See Figure 4.
Lifting the Switch
WARNING
DO NOT lift the switch poles by rigging to the live parts .
Avoid allowing the switch poles to swing while lifting .
Lifting the switch by the live parts will damage the
switch . Rough handling may cause damage to the
blades and contacts .
Failure to lift the switch properly can result in switch
damage, causing improper operation, arcing, or
electrical shock .
STEP 4.
Hoist the switch poles using the lifting angles
provided and bolt them into position on their
supporting members as shown on the erection
drawing. See Figure 5.
Remove the lifting angles.
CAUTION
Make sure the surfaces on which the
switch pole bases are mounted are flat
and true . Mounting to an uneven surface
can cause the bases to twist, placing
undue strain on the insulators and throwing
the blades out of alignment, resulting in
difficul ties operating the switch . Use shims
as required .
Figure 4. The support members.
Support members by others or
ordered separately
Figure 5. Hoisting the switch pole into position.
Lifting
angles