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Installation & Adjustment Procedures
Vertical or Underhung Mounting Switch
Rotate the rear insulator stack to open the single pole. Refer to the single-pole
sub-assembly drawing for the correct angle of blade opening. If adjustment is
required, use the open position stop bolt on the strut to adjust the blade until it is
at the required angle (See
).
Adjustment of Switch in Closed Position
With the insulator mounting bolts still loose (except the rotating insulator), check if the
blade enters the contacts squarely. If not, align with the jacking screws. Now tighten all
bolts. Open and close blade to check if blade enters contact in center. If it is off center,
use jacking screws to realign. If that does not help, it may be necessary to loosen hinge
end stack bolts to aid in alignment.
Adjust Blade on Front Stop
•
Blade should touch stop as blade contact begins wiping motion with jaw contacts.
This adjustment is made at the factory and should not need correcting in the field.;
however, due to variation of the insulators, spacers, or the addition of ground
switches or interrupter attachments which were not part of the original order a
change may be necessary.
•
To make the adjustment, loosen the set screws on the fork (See Figure 4.) and using
the ball socket screws, either move the ball stud out to increase the effective fork
length or in to decrease the effective fork length. Increasing the effective fork length
increases the toggle pressure and starts the wiping action of the blade sooner.
Decreasing the effective fork length does the opposite. A special tool is needed for
this adjustment. Contact factory.
•
Both ball socket screws must be tight to maintain proper pressure on the ball joint.
Retighten the set screws.
•
The blade is in correct alignment if contact is within 3°max. over-travel or under-
travel of center (See
Figure 5: Blade Allignment
Summary of Contents for CVB-2
Page 1: ...TYPE CVB 2 Vertical Break Disconnect Switch 15 5 245 kV 2000A INSTRUCTION INSTALLATION MANUAL ...
Page 2: ...Page II The Quality Name in High Voltage Switching ...
Page 3: ...Page III The Quality Name in High Voltage Switching Safety Information ...
Page 7: ...Page VII The Quality Name in High Voltage Switching Type CVB 2 ...
Page 31: ......