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General| Brand | PASCOR ATLANTIC |
|---|---|
| Model | TTR-8 |
| Category | Switch |
| Language | English |
Instructions on how to carefully handle disconnect switches, noting porcelain fragility.
Importance of following factory drawings for assembly and ground-level adjustment.
Verify squareness and levelness of base spacers and rotor bearing tops, adjusting as needed.
Mount insulator stacks to switch base, maintaining factory crank position for alignment.
Procedure for aligning insulator stacks on switches 8.25-242kV using shims or leveling screws.
Mount current carrying parts with base crank clockwise and jaws finger tight for alignment.
Assemble switches on supporting structure, ensuring they are level and parallel, shimming if needed.
Adjust switch blade for central entry into jaws and proper contact alignment.
Specifies allowable elevation difference for blade contact based on contact width and degree tolerance.
Adjusts blade height in jaw by turning clevis, noting left-hand thread connection.
Mount offset bearing and base on structure per drawings, checking crank radius and angle.
Adjust multi-angle crank for 45-degree angle with offset link, removing projection if interference occurs.
Install vertical operating pipe (VOP) by connecting coupling to rotor bearing shaft.
Install pipe splice and guide plate for structures over 23 feet, aligning vertical pipe.
Install offset rod from offset bearing to multi-angle crank, adjusting pin-to-pin dimension and rod length.
Install swing-handle or worm gear operator, following specific instructions for each type.
Adjust offset rod and offset bearing to achieve fully open/closed positions and toggle on offset bearing.
Install interphase rods and offset crank rod for unison operation, adjusting length for proper opening/closing.
Install movable and stationary arcing horns on blade and jaw, adjusting for light contact pressure.
Install corona rings and balls on 242kV switches per single pole drawings.
Perform final checks on 3-pole installation for blade angles, jaw entry, contact, and bolt tightness.
Guidance on adjusting offset rod when offset bearing pulls switch open for toggle and blade roll.
Guidance on adjusting offset rod when offset bearing pushes switch open for toggle and blade roll.
Steps for cleaning, treating, and connecting aluminum terminals to ensure good current transfer.
Procedure for connecting copper conductors to aluminum terminals, including cleaning and greasing.
Items to check annually for jaw contacts, alignment, cleanliness, and pressure.
Lubrication recommendations for switch components based on type and environment.
Procedure for converting counterbalance from upright to vertical mounting, noting tension.
Procedure for inverting counterbalance, requiring additional parts and factory contact.
Troubleshooting steps for blade not opening to 90 degrees based on single pole or 3-phase arrangement.
Troubleshooting steps for blade not being flat when closed, based on single pole or 3-phase arrangement.
Troubleshooting for blade height in jaw, not centerline of contact springs, for contact issues.
Troubleshooting for incomplete opening or closing of the switch, checking interphase crank angles.
Troubleshooting for outside phases not turning flat, involving over-travel and lost motion.
Troubleshooting for inconsistent phase operation, adjusting interphase rods and vernier for synchronization.
Troubleshooting for blade hitting jaw stop, adjusting clevis counter-clockwise to prevent binding.
Troubleshooting violent outboard bearing snap during closing, adjusting offset rod.
Troubleshooting violent outboard bearing snap during opening, adjusting offset rod.
Troubleshooting violent bearing snap during closing and opening, adjusting trail radius.
Information required for ordering renewal parts, including serial number and switch type.
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