Table of Contents
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Alduti-Rupter
Switches
®
Outdoor Distribution (25/34.5 kVand 34.5 kV★)
Table of Contents
Section
Qualified Persons . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Read this Instruction Sheet . . . . . . . . . . . . . . . . . . . 2
Retain this Instruction Sheet . . . . . . . . . . . . . . . . . . . 2
Proper Application . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Operating Considerations . . . . . . . . . . . . . . . . . . . . . 2
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Warranty Qualifications . . . . . . . . . . . . . . . . . . . . . . 3
Understanding Safety-Alert Messages . . . . . . . . . . . 4
Following Safety Instructions . . . . . . . . . . . . . . . . . . 4
Replacement Instructions and Labels . . . . . . . . . . . 4
Location of Safety Labels . . . . . . . . . . . . . . . . . . . . . 5
. . . . . . . . . . . . . . . . . . . . . . . . . 6
Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Packing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Also applicable to three-pole vertical-break style switches rated 14 .4 kV, 2400 amperes continuous .
★
June 29, 2020
© S&C Electric Company 1977-2020, all rights reserved
Installation and Operation
Page
Three-Pole Vertical-Break Style
Reciprocating Operating Mechanism
Section
Mounting to Wood . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Uncrating the Switch . . . . . . . . . . . . . . . . . . . . . . . . . 9
Attaching Couplings to the Switch Poles . . . . . . . . . 9
Mounting the Support Members . . . . . . . . . . . . . . .10
Lifting the Switch . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Set Screws . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Installing the Interphase Pipe . . . . . . . . . . . . . . . . . .13
Installing the Vertical Operating Pipe . . . . . . . . . . . .14
Installing the Operating Handle . . . . . . . . . . . . . . . .15
Checking Alignment . . . . . . . . . . . . . . . . . . . . . . . . .17
Installing the Key Interlock . . . . . . . . . . . . . . . . . . . .18
Checking Operation . . . . . . . . . . . . . . . . . . . . . . . . .19
Connecting the High-Voltage Connectors . . . . . . . 25
Opening and Closing the Switch . . . . . . . . . . . . . . 26
Instruction Sheet 761-525
Page
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Summary of Contents for S&C Alduti-Rupter Switches Outdoor Distribution
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Page 1: Table Of Contents
Alduti-Rupter Switches Three-Pole Vertical-Break Style ® Outdoor Distribution (25/34.5 kVand 34.5 kV★) Reciprocating Operating Mechanism Installation and Operation Table of Contents Section Page Section Page Introduction Installation Qualified Persons . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Mounting to Wood . -
Page 2: Introduction
Introduction Qualified Persons WARNING Only qualified persons who are knowledgeable in the installation, operation, and maintenance of overhead and underground electric distribution equipment, along with all associated hazards, may install, operate, and maintain the equipment covered by this publication . A qualified person is someone who is trained and competent in: •... -
Page 3: Warranty
Introduction Nameplate on operating handle Nameplate on switch base Figure 1. Switch nameplates with ratings. Warranty The warranty and/or obligations described in S&C’s Price Sheet 150, “Standard Conditions of Sale–Immediate Purchasers in the United States,” (or Price Sheet 153, “Standard Conditions of Sale–Immediate Purchasers Outside the United States”), plus any special warranty provisions, as set forth in the applicable product-line specification bulletin, are exclusive. -
Page 4: Safety Information
Safety Information Understanding Several types of safety-alert messages may appear throughout this instruction sheet and on labels and tags attached to your Alduti-Rupter Switch. Familiarize yourself with these Safety-Alert types of messages and the importance of these various signal words: Messages DANGER “DANGER”... -
Page 5: Location Of Safety Labels
Safety Information Location of Safety Labels Reorder Information for Safety Labels Location Safety Alert Message Description Part Number DANGER Electrocution Hazard G-6580-1 WARNING Piercing Set Screws G-3176R1 ● WARNING Handle Operation G-4400R5 WARNING Electrocution Hazard—Grounding Strap G-6596 ● ● This part is a tag to be removed and discarded after the switch is installed and adjusted . S&C Instruction Sheet 761-525... -
Page 6: Safety Precautions
Safety Precautions DANGER Alduti-Rupter Switches operate at high voltage. Failure to observe the precautions below will result in serious personal injury or death. Some of these precautions may differ from company operating procedures and rules . Where a discrepancy exists, users should follow their company’s operating procedures and rules . QUALIFIED PERSONS. -
Page 7: Shipping And Handling
Shipping and Handling Inspection The components included with these modifications are shown on the erection drawing bill of material under the Examine the shipment for external evidence of damage as specified “-SX” suffix. They include: soon after receipt as possible, preferably before removal from the carrier’s conveyance. -
Page 8: Handling
Shipping and Handling Handling The crates the switch pole-units are packed in are designed to be moved and lifted using a lift truck. Raised slots in the bottom of the crates are provided for a lift truck’s forks. NOTICE minimize time-consuming final adjustments... -
Page 9: Installation
Installation Mounting to Wood Follow these steps when mounting to wood: NOTICE When mounting to a wood structure, a spring-type washer must be used between the square washer and the nut to maintain fastener tightness in the event of wood shrinkage . See Figure 2 . Uncrating the Switch Spring-type STEP 1. -
Page 10: Mounting The Support Members
Installation Mounting the Support Members Support members by others or ordered separately Follow these steps when mounting support members: STEP 3. Mount the support members (supplied by others or ordered separately) on the structure for the switch pole-units and the horizontal-pipe bearing. - Page 11 Installation STEP 5. Mount the horizontal-pipe bearing on its sup- port member as shown on the erection draw ing. Horizontal-pipe bearing See Figure 6. STEP 6. To minimize time-consuming fi nal adjust- ments, make sure each switch pole is fully closed with blades against their blade stops and the switch drive lever within -inch (2 mm) of...
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Page 12: Installing Pipe Couplings With Piercing
Installation Installing Pipe Couplings with Piercing Set Screws Clamp bolt WARNING Failure to properly install pipe couplings with piercing set screws can cause slippage of operating pipe, Piercing resulting in improper operation of the switch, arcing, Coupling body set screw equipment damage, or electrical shock . -
Page 13: Installing The Interphase Pipe
Installation Installing the Interphase Pipe Interphase pipe sections Follow these steps when installing the interphase pipe: STEP 8. Install the interphase and, if applicable, the outboard pipe sections as shown on the erec tion drawing. See Figure 9. Follow the directions in the “Installing Pipe Couplings with Piercing Set Screws”... -
Page 14: Installing The Vertical Operating Pipe
Installation Installing the Vertical Operating Pipe Follow these steps when installing the vertical operating pipe: STEP 10. One of the pipe sections furnished is threaded at one end to accommodate the operating handle assembly. See Figure 11. Install this section of pipe last, with the threads at the lower end. -
Page 15: Installing The Operating Handle
Installation Installing the Operating Handle ● Follow these steps when installing the operating handle: STEP 13. Mount the operating handle assembly as shown on the erection drawing. At the same time, use one of the mounting bolts to attach one end of the ground strap (the end with the grounding connector attached) to the handle mounting plate. - Page 16 Installation STEP 15. Insert the upper end of this pipe section in the lowest rod guide or—if only one vertical oper ating-pipe section is used—the interphase drive lever coupling and, while holding the operating handle at a point approximately 20 degrees from the Closed position, torque the rod guide (or interphase drive lever) coupling Clamp bolt clamp bolt.
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Page 17: Checking Alignment
Installation Checking Alignment Follow these steps when checking alignment: Remove the ties holding the switch blades to STEP 17. their stationary main contact assemblies. See Figure 18. Remove tie Remove the 45-degree positioning stud from each rod guide. See Figure 13 on page 14. Open and close the switch slowly to make sure no operational difficulties are encoun tered because of undetected damage in shipping. -
Page 18: Installing The Key Interlock
Installation Installing the Key Interlock Follow these steps when installing the key interlock: The interlock group includes a Superior Type STEP 20. Interlock bolt B4003-1 Mk II single- or multiple-key interlock (or equivalent), with zero bolt projection and ¾ -inch (19 mm) bolt travel, locking disc, and interlock bracket. -
Page 19: Checking Operation
Installation Checking Operation Follow these steps when checking operation: STEP 22. Open and close the switch slowly through its full travel. WARNING Main contacts fully closed Open and close the switch slowly ONLY when checking operation making adjustments to the de-energized switch . When opening or closing an energized switch, swing the operating handle vigorously through its full travel without hesitation . - Page 20 Installation In the unlikely event that only one or two switch poles are fully closed, loosen the clamp bolt(s) on the interphase pipe Blade Blade coupling(s) with the switch in the Closed position. Push the switch blade(s) against the blade stop(s), and torque the clamp bolt of each pipe-coupling clamp to fi nal tightness.
- Page 21 Installation STEP 23. When satisfactory travel adjustment of the operating handle and switch have been attained, torque the nuts on the adjustable lever arm of the interphase drive lever and the clamp bolt on the rod guide (or interphase drive lever) coupling to fi nal tightness.
- Page 22 Installation STEP 24. Open and close the switch slowly several times. ⁄ -inches (8 mm) Check the operation of each switch pole. The Opening cam maximum following conditions must be met: WARNING Open and close the switch slowly ONLY Blade Interrupter when checking...
- Page 23 Installation (c) When the blade is in the fully Closed posi- ⅛-inch (3 mm) maximum tion, each blade-closing cam must overlap Interrupter its respective interrupter-closing lever to prevent inadvertent opening interrupter, and clearance between the Closing cam blade-closing cam and its respective interrupter-closing lever must be within the limit shown.
- Page 24 Installation (f) With the switch in the fully Closed position, verify the minimum clearances between the Interrupter blade shunt contact and the interrupter, mea sured to the interrupter housing as well ⅜-inch (10-mm) minimum shunt as the interrupter skirts. See Figure 33. contact (g) Move the blade in the opening direction and to interrupter...
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Page 25: Connecting The High-Voltage Connectors
Installation STEP 25. Attach the danger label to the pole or struc ture using two straps or bolts (furnished by others). See Figure 35. Position the danger label within 3 feet (91 cm) of the switch pole-units and in full view of line Danger crews when viewed from the front of the switch. -
Page 26: Operation
Operation Opening and Closing the Switch DANGER The interrupters and terminal pads of the Alduti-Rupter Switch may be energized with the interrupters in any position . Before inspecting, servicing, or repairing this switch or working on the conductors on either side of the switch, test for voltage using proper high-voltage test equipment .