PASCOR ATLANTIC TTT7, Manual

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Leveling Screws
Shims Used for Leveling Switches
Shims (As Reqired)
Base Channel Flange
Rotor or Spacer Base
Leveling Screw
Rotor or Spacer Base
Base Channel Flange
Fig. 1 Types of Leveling Devices
Leveling Bolts
Rotor or Spacer Base
Base Channel Flange
Adjusting Nuts
Taper Washer
(When Used)
Taper Washer
(When Used)
Taper Washer
(When Used)
IMPORTANT: Read manual before installing or maintaining equipment! Make absolutely sure that
equipment is de-energized and properly grounded.
This manual should be used in conjunction with the factory drawings. The drawings contain critical
information, which if not followed could affect the operation of the switch.
Instructions can not cover all possible variations in equipment nor provide for every possible contingency
to be met in connection with installation, operation or maintenance. Should further information be
required or should particular problems arise which are not covered sufficiently for the purchaser’s
purposes, the concern should be referred to the factory.
For Technical Assistance Call 276-688-3328
RECEIVING INSPECTION
Check the shipment for completeness against the
bill of material and installation drawings. If
damage is found, file a claim immediately with the
transportation company and notify your Pascor
Atlantic representative.
HANDLING
Handling of disconnect switches should be done
with care. Porcelain is fragile and may be
damaged due to improper handling.
Factory drawings should be followed during
installation. It is recommended that switches be
fully assembled and adjusted at ground level
before being placed into position. This should
minimize final adjustments.
Lifting of switches by insulators, contacts, or live
parts should be avoided, because of possible
damage to these parts. Attachments for hoisting
should be made to the switch bases unless
otherwise instructed.
INSTALLATION AND ADJUSTMENT
If the switches have already been assembled with
insulators at the factory, proceed to step 5.
However, it is recommended that each switch pole
be checked for alignment and proper adjustment
after being mounted on the structure.
Step 1—Check Bases
Check bases to make sure that the spacers and
rotor bearing tops are square and level. If
necessary, make adjustments or shim. Shims are
normally used through 230kV and leveling screws
for 345 kV and above, see Fig. 1.
Step 2 —Mounting Switch Bases
Mount the switch bases on the supporting structure.
They should be level and parallel to each other, in
the position shown on the control drawing. One
switch base usually has additional cranks for
attaching either the main switch or the ground
switch to the operating bearing at the top of the
vertical-operating pipe. Make sure that this base is
placed in a position as called for on the control
drawing.