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Installation and Adjustment Manual

For Type TTR-8 Vertical Break Switch

7.5kV thru 230kV

IB-TTR8-C
Jan. 2017

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Содержание TTR-8

Страница 1: ...Page 0 Installation and Adjustment Manual For Type TTR 8 Vertical Break Switch 7 5kV thru 230kV IB TTR8 C Jan 2017 ...

Страница 2: ...plice and Guide Plate 6 Step 11 Install Offset Rod 6 Step 12 Install Operating Mechanism 7 Step 13 Adjust Drive Phase 7 Switch Adjustment Tips 8 Step 14 Install and Adjust Interphase Rods 9 Step 15 Arcing Horn Installation 10 Step 16 Installation of Corona Rings and Balls 10 Step 17 Final Checks 10 Terminal Connections 10 Maintenance 11 Appendix A Counterbalances 12 Trouble Shooting 13 Renewal Par...

Страница 3: ...achments for hoisting should be made to the switch bases unless otherwise instructed See Fig 2 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 How...

Страница 4: ...ghtly for subsequent contact alignment This alignment will be discussed later under blade entry step 6 Note The counterbalances are assembled at the factory for 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 well See Appendix A on page 12 Step 5 Mount Switches Assemble the ...

Страница 5: ...ly level and one high on the left This is due to many variables and tolerances plus the free play or clearance in pin connections of all the switches and control parts With the switch blade in the closed position the gooseneck crank arm and fork link will over toggle to the left of the switch center line when looking from hinge to jaw end of the switch phase Note switch blade angle in the blade cl...

Страница 6: ...ase Switch Crank Switch Base Pipe Splice Bearing Plate Supplied Only When Structure Height Exceeds 23 Feet Interphase Rods Vertical Operating Pipe VOP Ground Strap Kirk Key Interlock And Interlocking Adapter Optional Adjustable Lock Plate With Position Indication Swing Handle Switch Rotor Bearing VOP Coupling 45 Fig 5 Typical Three pole TTR 8 Switch Installation ...

Страница 7: ...cted switches using the 5 8 coupling bolt supplied with the unit 2 Install accessory items Refer to the drawings shipped with the unit for instructions on installing accessory items auxiliary switches mechanical interlocks position indicators ground straps etc which mount on the vertical operating pipe Step 10 Install Pipe Splice and Guide Plate A pipe splice and guide plate Fig 5 are furnished fo...

Страница 8: ...the handle clamp so its set screws are 4 inches above the lock plate and its vertical centerline is at or near as possible to the closed position see Fig 8 5 Temporarily fasten the handle to the pipe with the set screws Worm Gear Mechanism 1 With ground strap in place on vertical operating pipe slide worm gear mechanism over the vertical operating pipe and attach it to the structure 2 Remove the s...

Страница 9: ...also affect the final position of the open or closed switch blade as described below If the offset bearing is pulling the switch open Fig 9 Shortening will reduce toggle pressure in the closed position and add in the open position It may also decrease blade roll in on close and increase blade open angle Lengthening will reduce the toggle pressure in the open position and add to the close position ...

Страница 10: ...ter the drive phase is adjusted for proper open and closed blade positions and toggle With all blades in the closed position install the interphase rods and offset crank rod as follows a Lengthen the interphase rods that are in compression during opening as much as possible yet allowing for the pins to be inserted b On the rods that are in tension during opening shorten them as much as possible ye...

Страница 11: ... bolts are tightened with switch in close position 5 In opening the blades should rotate to relieve the jaw contact pressure 6 Tighten all lock nuts and pierce bolts 7 For swing handle operating mechanisms a Operate the switch and move the adjustable lock castings until they exert pressure against the handle in both the open and closed positions of the switch This provides a slight torsional wind ...

Страница 12: ...pplying the lubricants at pivot points The grease should be durable and able to retain its viscosity over a wide temperature range Field Lubrication of Outdoor Switches None required at installation unless switches were exposed to abnormal conditions during storage for a considerable length of time During regular cleaning give them a light coat of grease Table 1 RECOMMENDED TORQUE FOR ALUMINUM BOL...

Страница 13: ...e installing pin A 6 Raise the blade to relieve pressure 7 Remove the vise grip pliers 8 File off any burrs on the counterbalance shaft 9 Proceed to step 5 of installation and adjustment on page 3 CHANGE TO INVERTED WARNING When performing this procedure use care because parts are in tension Additional parts are required contact the factory before proceeding 1 Start with the switch blade in the CL...

Страница 14: ...rd bearing to the closed position Verify the moving contact or beavertail is at a 0 4 parallel with the switch base If the outboard bearing is pushing the switch closed then lengthen the offset rod by using the vernier adjustment until the 4 closing can be obtained For pulling the switch closed shortening the offset rod should be necessary pg 8 Blade is too high in the jaw not in the centerline of...

Страница 15: ...s pulling the swich closed lengthen the offset rod For pulling the switch closed shorten the offset rod pg 8 Outboard bearing snaps violently over dead center close and open Shorten trail radius by 1 4 and retry until offset bearing snaps over dead center but not violently pg 9 RENEWAL PARTS Refer to the switch nameplate when ordering renewal parts The nameplate is attached to the base assembly of...

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