S&C Trans-Rupter II SE Installation Manual
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S&C Trans-Rupter II SE Installation Manual

S&C Trans-Rupter II SE Installation Manual

Transformer protector, outdoor transmission (69 kv through 138 kv)
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S&C Trans-Rupter II
Outdoor Transmission (69 kV through 138 kV)

Table of Contents

Section
Qualified Persons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Read this Instruction Sheet . . . . . . . . . . . . . . . . . . . . . . 2
Retain this Instruction Sheet . . . . . . . . . . . . . . . . . . . . . 2
Proper Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Understanding Safety-Alert Messages . . . . . . . . . . . . . 3
Following Safety Instructions . . . . . . . . . . . . . . . . . . . . . 3
Replacement Instructions and Labels . . . . . . . . . . . . . . 3
Location of Safety Labels . . . . . . . . . . . . . . . . . . . . . . . 4
Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Packaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Installing the Pole-Unit . . . . . . . . . . . . . . . . . . . . . . . . . 6
Mounting the Control Cabinet . . . . . . . . . . . . . . . . . . . 12
Installing S&C Mounting Pedestals . . . . . . . . . . . . . . . 15
Installing the Pole-Unit . . . . . . . . . . . . . . . . . . . . . . . . 17
Mounting the Control Cabinet . . . . . . . . . . . . . . . . . . . 21
Installing the Conduit Assembly . . . . . . . . . . . . . . . . . 23
Wiring the Pole-Unit Connections . . . . . . . . . . . . . . . . 24
Testing Control Devices . . . . . . . . . . . . . . . . . . . . . . . . 28
May 20, 2013© S&C Electric Company
®
Transformer Protector
Installation
Page
Model SE
Section
Before Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Installing the Terminal Pads . . . . . . . . . . . . . . . . . . . . 34
Attaching High-Voltage Conductors . . . . . . . . . . . . . . 35
Disassembling the Charging Tool . . . . . . . . . . . . . . . . 37
Assembling the Charging Tool . . . . . . . . . . . . . . . . . . . 38
Extra Sections for the Charging Tool . . . . . . . . . . . . . . 39
Indicators
Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Pole-Units and Control Cabinet . . . . . . . . . . . . . . . . . . 43
Inspection Recommendations . . . . . . . . . . . . . . . . . . . 44
Instruction Sheet 731-502
Page

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Summary of Contents for S&C Trans-Rupter II SE

  • Page 1: Table Of Contents

    S&C Trans-Rupter II ® Transformer Protector Model SE Outdoor Transmission (69 kV through 138 kV) Installation Table of Contents Section Page Section Page Introduction Installing Optional Bypass Accessory Qualified Persons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Before Starting .

  • Page 2: Introduction

    Introduction Qualified Persons Ç WARNING The equipment covered by this publication must be installed, operated, and maintained by qualified persons who are knowledgeable in the installation, operation, and main- tenance of overhead electric power distribution equipment along with the associated hazards .

  • Page 3: Safety Information

    Safety Information Understanding There are several types of safety-alert messages which may appear throughout this instruction sheet as well as on labels attached to the Trans-Rupter II . Familiarize Safety-Alert yourself with these types of messages and the importance of the various signal Messages words, as explained below .

  • Page 4: Location Of Safety Labels

    Safety Information Location of Safety Labels Reorder Information for Safety Labels Location Safety-Alert Message Description Part Number Do not close Trans-Rupter II if the source-side series disconnect Ç WARNING G-7016R1 is closed . Ç WARNING Do not charge if disconnect is closed . G-7009-1 Ç...

  • Page 5: Inspection And Packaging

    Inspection and Packaging Inspection Examine the shipment for external evidence of damage as soon after receipt as possible, preferably before removal from the carrier’s conveyance. Check the bill of lading to make sure that all shipping skids, crates, and containers listed thereon are present. If there is visible loss and/or damage: 1.

  • Page 6: Installation On A User-Furnished Structure

    Installation on a User-Furnished Structure Ç CAUTION The user-furnished mounting structure must meet the guidelines for static and dynamic loading limits listed in S&C Data Bulletin 731-60 . Failure to observe these guidelines can result in equipment damage. Installing the Pole-Unit Repeat Steps 1 through 10 for each pole-unit.
  • Page 7 Installation on a User-Furnished Structure Pole-unit Shipping brace Figure 2. Pull the pole-unit carefully upward. Figure 3. Do not remove the shipping brace at this time. S&C Instruction Sheet 731-502...
  • Page 8 Installation on a User-Furnished Structure Step 3 With the foam wrapping around the pole-unit base removed and the pole-unit lifted off the ground, check that the gas-pressure gauge on the underside of the pole-unit base is in the “OK” to operate zone. See Figures 4 and 5. NOTICE The gas-pressure gauge needle should be in the “OK”...
  • Page 9 Installation on a User-Furnished Structure Step 4 Position the pole-unit so that its base is near the pole-unit mounting bracket. If necessary, Pole-unit rotate the pole-unit so that its electrical junction box and terminal-pad attachment locations are appropriate for the installation. See Figure 6. NOTICE The terminal pad of each pole-unit can be mounted in one of four positions located 90°...
  • Page 10 Installation on a User-Furnished Structure Step 6 Attach the pole-unit base to the mounting bracket installed in Step 1, using the set of mounting bosses nearest to the bracket. Both the top and bottom mounting bosses must be used. Use the B\,–11 3 2 stainless-steel studs furnished.
  • Page 11 Installation on a User-Furnished Structure Step 8 Place a second mounting bracket flush against the bosses on the opposite side of the pole-unit base. Attach the mounting bracket to both the Pole-unit base top and bottom mounting bosses. Use shims as required.

  • Page 12: Mounting The Control Cabinet

    Installation on a User-Furnished Structure Mounting the Control Cabinet Mounting structure Step 11 Drill four M\zn-inch diameter holes in the struc- ture where the control cabinet will be mounted. Refer to the catalog drawing for appropriate Holes locations for the holes. Make sure the mount- ing height allows for convenient access to the enclosure.

  • Page 13: Connecting Pole-Units To The Control Cabinet

    Installation on a User-Furnished Structure Step 14 To add holes for control-circuit conduit(s) for control power and relays, mark the location(s) on the conduit-entrance plate at the bottom of the cabinet. Then remove the plate and punch the necessary opening(s). Replace the conduit- entrance plate.
  • Page 14 Installation on a User-Furnished Structure Step 16 Prepare appropriate lengths of conduit to con- nect the pole-unit electrical junction boxes to the control-circuit conduit. Using watertight fittings, attach the conduit to the junction boxes and to the hole(s) along the bottom of the con- trol cabinet.

  • Page 15: Installation On S&C Mounting Pedestals

    Installation S&C Mounting Pedestals Ç CAUTION The foundations for S&C Mounting Pedestals must be designed to meet the loading limits specified in the appropriate S&C Data Bulle- tin 731-60 . Pedestal Failure to meet these loading limits can result in equipment damage. Installing S&C Mounting Pedestals Step 19 Cut the steel straps that bind the mounting...
  • Page 16 Installation S&C Mounting Pedestals Step 22 For 69-kV Trans-Rupter II with 84-inch phase spacing; 115-kV Trans-Rupter II; and Cross base 138-kV Trans-Rupter II: Loosely bolt the cross base to the pedestals using the Z\x–13 3 1C\v bolts furnished. Using a level, verify that the cross base is horizontal, both lengthwise and side-to-side.

  • Page 17: Installing The Pole-Unit

    Installation on S&C Mounting Pedestals Installing the Pole-Unit Repeat Steps 27 through 34 for each pole-unit. Step 27 Remove the pole-unit from the shipping crate and lift it, using the following procedure: Ç CAUTION Pole-unit Lift the pole-unit only by the lifting bracket . Lifting it by any other means can dam- Lifting bracket age the pole-unit.
  • Page 18 Installation S&C Mounting Pedestals Step 28 With the foam wrapping around the pole-unit base removed and the pole-unit lifted off the ground, check that the gas-pressure gauge on the underside of the pole-unit base is in the “OK” to operate zone. See Figures 29 and 30. NOTICE The gas-pressure gauge needle should be in the “OK”...
  • Page 19 Installation on S&C Mounting Pedestals Step 29 Position the pole-unit so that its base is just above the cross base. If necessary, rotate the Pole-unit pole-unit so that its electrical-junction box is positioned to the side of the cross base, where the conduit will be attached.
  • Page 20 Installation S&C Mounting Pedestals Step 31 Place the pole-unit in the cross-base channel so that the mounting bosses are aligned with both sides of the cross base and the mounting bracket. See Figure 33. Pole-unit Cross base channel Pole-unit mounting bracket Electrical junction box Figure 33.

  • Page 21: Mounting The Control Cabinet

    Installation on S&C Mounting Pedestals Step 33 Attach B\,–11 hex nuts to the studs and tighten them to a torque of 70 to 80 ft.-lbs. Use a flat washer and a split washer on each stud. See Figure 35. Ç CAUTION Never exceed the recommended torque limit .
  • Page 22 Installation S&C Mounting Pedestals Step 36 Ground the control cabinet by solidly connect- ing one Number 6 AWG wire (or wires of equivalent cross-sectional area) to the flange at the bottom rear of the enclosure. See Figure 37. Flange Solidly connect the enclosure ground wire to Base of control the switch ground wire(s).

  • Page 23: Installing The Conduit Assembly

    Installation S&C Mounting Pedestals Installing the Conduit Assembly Conduit assembly Step 39 Pedestal hooks Set the conduit assembly in the hooks at the top of the pedestals. The conduit should be attached to the cross-base opposite the control cabinet. Make sure the conduit is placed along the pedestal to which the control cabinet is attached.

  • Page 24: Wiring The Pole-Unit Connections

    Installation S&C Mounting Pedestals Wiring the Pole-Unit Connections Window bolts— Underside of DO NOT REMOVE For optional quick-connect control cable skip pole-unit base to Step 44. Step 42 Remove the three removable screws at each pole-unit electrical junction box cover. Retain the screws.
  • Page 25 Installation S&C Mounting Pedestals Step 45 When the quick-connect option (“-C2”) is speci- fied plug-style connectors will replace the butt- splice connections to the pole-unit. The male plug is keyed to the female socket. See Figure 45. Push the plug into the socket and turn the black ring until the red line around the outside of the socket is obscured.
  • Page 26 Installation on S&C Mounting Pedestals Step 46 Attach the conduits for pole-unit wiring and control-circuit wiring to the punched holes on the cabinet bottom, then pull the wires through to the connection enclosure. Be sure that the fittings are properly sealed to prevent water ingress.

  • Page 27: Control Cabinet Set-Up

    Control Cabinet Set-Up Connecting Current Transformers to the Control Cabinet Before connecting current transformers, the relays inside the Model SE control cabinet should be configured in accordance with the instructions in the furnished relay manual. NOTICE Make sure the CTs conform to the allow- able values listed S&C Data Bulletin 731-60 .

  • Page 28: Testing Control Devices

    Control Cabinet Set-Up Testing Control Devices Steps 48 through 52 detail procedures for veri- fying proper operation of control components. If any control device does not meet the crite- ria detailed in the procedures below, stop the installation and notify S&C Electric Company. Repeat Steps 48 through 50 for each relay.
  • Page 29 Control Cabinet Set-Up b. Rotate the charging tool handle counter- clockwise, as indicated on the tool, to close and charge the pole-unit. See Figure 54. Approximately 40 revolutions are needed. Keep turning until the internal stop is reached. The torque limiter will slip after this point.
  • Page 30 Control Cabinet Set-Up Step 50 To initiate a trip operation, inject secondary current into the relay. Refer to the relay manu- facturer’s instructions. Step 51 Verify that the pole-units operated properly. Check that each pole-unit position indicator shows “OPEN” and discharged. See Figure 57. Step 52 To initiate a trip operation, inject secondary current into the relay.
  • Page 31 Control Cabinet Set-Up Step 53 To initiate a trip operation, inject secondary current into the relay. Refer to the relay manu- facturer’s instructions. Trip-energy Verify that the trip-energy supply is storing supply energy. Open the swing out panel to access the circuit board of the trip-energy supply.

  • Page 32: Installing Optional Bypass Accessory

    Installing Optional Bypass Accessory Before Starting The bypass accessory allows the interrupter of Spacer between the Trans-Rupter II to be “bypassed” allowing Blade pole-unit and blade stop operation of the Trans-Rupter II and testing assembly of the associated relays without interrupting service.

  • Page 33: Operation

    Installing Optional Bypass Accessory Step 56 The lower bypass blade assembly uses two sets of mounting holes and has an integral terminal pad that should be used in place of mounting Blade should be a terminal pad to one of the sets of pole-unit centered between mounting bosses.

  • Page 34: Terminal Pad And Conductor Connections

    Terminal Pad and Conductor Connections Installing the Terminal Pads Terminal Z\x –13 3 1 hex-head pad casting stainless-steel Step 60 cap screws and Prepare the upper and lower terminal pads lockwashers attachments as follows: Thoroughly clean the upper and lower ter- minal pad castings of the pole-unit using a soft cloth.

  • Page 35: Attaching High-Voltage Conductors

    Terminal Pad and Conductor Connections Attaching High-Voltage Conductors Attach the conductors to their respective terminal pads using flexible-conductor con- nections. Attach and form the conductors to minimize terminal-pad loadings. Do not exceed the terminal-pad loadings specified in Data Bulletin 731-60. Ç...

  • Page 36: Checklist Before Commissioning Trans-Rupter Ii

    Terminal Pad and Conductor Connections Checklist Before Commissioning Trans-Rupter II Before putting the Trans-Rupter II in service, verify the following: • All three pole-units are “CLOSED” and charged. See Figure 68. • The covers for the relays and test switch, if furnished, are in place and secure.

  • Page 37: Manual Charging Tool Assembly

    Manual Charging Tool Assembly Ç WARNING DO NOT use the charging tool as a hotstick . Serious injury or death can result. Only use the charging tool for closing and charging Trans-Rupter II pole-units . The manual charging tool is shipped fully Linchpin assembled but can be disassembled for storage.

  • Page 38: Assembling The Charging Tool

    Manual Charging Tool Assembly Step 67 Remove the linchpin that attaches the insulating shaft to the tool head, then pull these compo- nents apart. Push the linchpin through the holes of the insulating shaft for storage. See Figures 73 and 74. Linchpin Figure 73.

  • Page 39: Extra Sections For The Charging Tool

    Manual Charging Tool Assembly Step 69 Push the insulating shaft and the tool handle together. Align the holes on the insulating shaft and the tool handle, then push the linchpin through the holes. See Figures 77 and 78. Tool handle Linchpin Insulating shaft Figure 77.

  • Page 40: Understanding The Pole-Unit Position

    Indicators Understanding the Pole-Unit Position Indicators The pole-unit position indicators are located underneath the pole-unit base. The indicators are not meaningful while the pole-units are being closed and charged. If the pole-unit is “OPEN” and discharged, the indicator reads “OPEN.” See Figure 79. “OPEN”...
  • Page 41 Indicators OK to operate (but replace): This is the yellow zone. If the gauge needle is in this zone, the pole-unit can be opened and closed with full ratings. However, the pole-unit has lost gas and should be replaced as soon as possible.

  • Page 42: Understanding The Optional Remote Gas-Density

    Indicators Understanding the Optional Remote Gas-Density Indicator If furnished, the remote gas-density indicator provides contacts for each pole-unit that allow remote monitoring of two low-gas-pressure alarms: Level 1 Alarm: When a Level 1 Alarm is issued, the pole-unit can be opened and closed as usual. However, the pole-unit has lost gas and should be replaced as soon as possible.

  • Page 43: Inspection Recommendations

    Inspection Recommendations Pole-Units and Control Cabinet During routine transformer maintenance and/ or inspections, the Trans-Rupter II should be visually inspected for the following: • Excessive corrosion at the terminal pads. • Discoloration, contamination, or other dam- age to the pole-unit insulation. •...

  • Page 44: Guidelines For Interrupter Resistance Values

    Inspection Recommendations On occasions when the transformer is taken out of service for maintenance, the Trans-Rupter II should be tripped, closed, tripped a second time, and finally closed. To trip the Trans-Rupter II, inject secondary current into one of the relays. Also trip the Trans-Rupter II using the manual-trip device.

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