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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 cannot 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.  

 

 

CAUTION:  When uncrating switches having 

blade counterbalances (Fig. 3), open the 

switch blade to relieve the pressure of the 

counter balance before removing the live 

parts from the base. 

 

 

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.  The tops 

of the two supports on the hinge end must be 

exactly the same height.  If necessary, make 

adjustments or shim.  Shims, leveling screws,  

 

2 | 

P a g e

 

 

Summary of Contents for TTR6

Page 1: ...IB TTR6 B May 2012 ...

Page 2: ...t Crank Rod 7 Step 10 Install Vertical Operating Pipe 7 Step 11 Install Pipe Splice and Guide Plate 8 Step 12 Install Operating Mechanism 8 Step 13 Arcing Horn Installation 8 Step 14 Installation of Corona Rings and Balls 9 Step 15 Final Checks 9 Terminal Connections 9 Maintenance 10 Counterbalances 11 Bearings 12 Cranks 12 Special Switches 13 Renewal Parts 14 Suggested Tools 15 16 Open End Wrench...

Page 3: ...ngs 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...

Page 4: ...shims place the shims under the insulator supports rotor bearing or spacer mounting flange where the bolts secure the rotor bearing or spacer mounting flange to the switch bases If optional leveling screws and or adjusting nuts have been supplied as shown in Fig 1 adjust the leveling screw and or adjusting nut to align the insulator stacks Loosen all hardware before jacking to prevent binding Step...

Page 5: ...ade into alignment and tighten hinge assembly mounting bolts Should this fail to give proper blade entry the jaw insulator stack should be shimmed or adjusted to suit When central entry is achieved rotate the blade into contact and tighten jaw base mounting bolts Also make certain the jaw fingers are nearly centered on the blade end contact If it is expected that the conductors to be attached to t...

Page 6: ...5 P a g e ...

Page 7: ...t is not usually possible to get this dimension to be equal on all three poles of a three pole switch If it s necessary to adjust this dimension remove connecting pin A and turn clevis B in or out turn then reconnect and try switch Turning the clevis in will move the blade away from the blade stop Conversely turning the clevis out will move the blade closer to the blade stop Open Blade Stop On swi...

Page 8: ...ed position In some adjustments the multi angle crank may be in such a position as to interfere with the stop projection on the switch crank If this is the case then remove this projection The other two poles will regulate the blade travel on this unit Note The multi angle crank should be set so that it forms an angle of approximately 45 degrees with the offset link in either switch position open ...

Page 9: ...ght torsional wind up in the operating pipe Tighten the two piercing set screws on the handle clamp until holes are punched into the pipe and continue until the screws are firmly seated Worm Gear Mechanism With ground strap in place on vertical operating pipe slide worm gear mechanism Fig 8 over the vertical operating pipe and attach it to the structure Remove the small position indicators which a...

Page 10: ...ase crank orientation per step 4 Terminal Connections The aluminum surface of the terminal connection provides for easy current transfer Notice In cases where a copper conductor is used bolt a tinned terminal clamp if available to the aluminum switch terminal pad If a non tinned terminal clamp is used apply a liberal amount of electrical joint grease at the joint and all over the pad of the fittin...

Page 11: ...n and that the contacts be examined to see that they are aligned clean and have a firm uniform pressure If the contacts are pitted or burned to some extent they should be removed and replaced Under normal service conditions the jaw contacts should be examined and maintained at least once a year depending upon the type of atmosphere to which they are exposed Periodic maintenance should consist of c...

Page 12: ...the mounting positions as required for each installation If it is necessary to change the mounting position of the switch in the field the counterbalance must be changed as described below UPRIGHT TO VERTICAL WARNING When performing this procedure use care because parts are in tension 1 Open the switch blade to approximately the 75 degree position 2 Clamp the plunger of the counterbalance with vis...

Page 13: ...the pin may be a bit difficult to remove 5 Remove pin B at the rear of the counterbalance The unit is now free to invert so that drain holes will be located as shown for inverted mounting 6 Re connect the rear of the counterbalance with Pin B 7 Remove the jaw assembly from its support insulator 8 Lower the blade below the CLOSED position and connect the counterbalance 9 plunger to the proper point...

Page 14: ...adjustment Using a force gauge measure the force exerted by the blade on the jaw stop by either pushing the blade up from below and noting the lbs at which the blade is lifted off the jaw stop or by putting a wire loop around the blade and lifting it with the gauge and noting the lbs required The place on the blade at which the force is measured should be just outside the finger contact assembly s...

Page 15: ...ch pole The same data is shown on the record engineering drawings The master file at the factory is linked to the serial number on the nameplate Renewal Parts Ordering Information Serial Number Switch Type Part Name Quantity Required Max kV B I L kV Cont Amps Mom Amps Refer your requests for renewal parts to the Factory 14 P a g e ...

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