Page 1: Table Of Contents
S&C Alduti-Rupter Switches Three-Pole Double-Break Style ® Outdoor Distribution (34.5 kV, 46 kV, and 69 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
Precautions on pages 4 through 6. The latest version of this publication is available online in PDF format at sandc.com/en/support/product-literature/. Retain this This instruction sheet is a permanent part of your S&C Alduti-Rupter Switch. Designate a location where you can easily retrieve and refer to this publication. Instruction Sheet...
Page 3: Warranty
THAT RELATES TO THE GOODS, OR ANY REMEDIAL PROMISE INCLUDED IN PRICE SHEET 150 (or PRICE SHEET 153.) The standard warranty is applicable to the S&C Alduti-Rupter Switch detailed in this Warranty instruction sheet except when it is power operated using a switch operator of other than Qualifications S&C manufacture.
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 S&C Alduti-Rupter Switch. Familiarize yourself with Safety-Alert these types of messages and the importance of these various signal words:...
Page 5: Location Of Safety Labels
Safety Information Location of Safety Labels Reorder Information for Safety Information 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 761-505...
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 your company’s operating procedures and rules. Where a discrepancy exists, follow your company’s operating procedures and rules.
Page 7: Shipping And Handling
Alduti-Rupter Switches with Power The components included with these modifications are Fuses. shown on the erection drawing bill of material under the specified “-SX”...
Page 8: Handling
Shipping and Handling Handling The crate the switch pole-units are packed in is designed to be moved and lifted using a lift truck. Raised slots in the bottom of the crate are provided for a lift truck’s forks. NOTICE To minimize time-consuming final adjustments after installation, make sure the switch poles are in their fully Closed position during installation of the interphase and vertical operating pipe sections.
Page 9: Installation
Installation 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. Drawings for stan- dard mounting arrangements show only the minimum or suggested locating dimensions for the outboard- bearing assembly, vertical operating-pipe guide...
Page 10: Attaching The Bell-Crank
Installation Attaching the Bell-Crank STEP 3. Attach the bell-crank to its base or bracket (pole- mounted arrangements only). See Figure 4. If the bell-crank is mounted between switch poles, the bell-crank will be connected to the interphase pipe by a flat-bar or pipe type drag link and an offset coupling.
Page 11 Installation STEP 5. Hoist the switch poles and bolt them into posi- tion as shown on the erection drawing. See Figure 6. NOTICE Make sure the surfaces on which the switch pole bases are mounted are flat and true. Mounting to an uneven surface can cause the bases to twist, placing undue strain on the insulators and throwing the blades out of alignment, resulting in difficul ties...
Page 12: Installing Pipe Couplings With Piercing Set Screws
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, resulting in improper operation of the switch, Piercing arcing, equipment damage, or electrical shock. Coupling body set screw To properly install piercing set screws:...
Page 13: Installing Interphase Pipe
Installation Installing Interphase Pipe Interphase pipe sections STEP 8. Install the pipe sections connecting the switch poles. See Figure 10. Follow the directions in “Installing Pipe Couplings with Piercing Set Screws” on page 12. Torque the clamp bolt of each pipe-cou pling clamp to final tightness.
Page 14: Installing Vertical Operating Pipe
Installation Installing Vertical Operating Pipe STEP 11. One of the pipe sections furnished is threaded at one end to accommodate the operating handle assembly. See Figure 13. Install this section of pipe last, with the threads at the lower end. If only one vertical operating-pipe section is required, proceed to Step 14 on page 16.
Page 15 Installation STEP 12. Mount the rod guide(s) with the arm pointing upward, as shown in Figure 14. When an adjustable rod guide is included (for the tiered-outboard switch mounting con- figuration only), mount it nearest the switch. A positioning stud is furnished which holds the rod guide arm at 45 degrees.
Page 16: Installing Operating Handle
Installation Installing Operating Handle ● STEP 14. 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 17 Installation STEP 16. 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 bell-crank cou- pling and, while holding the operating handle at a point approximately 20 degrees from the Closed position, torque the rod guide (or bell- crank) coupling clamp bolt.
Page 18: Checking Alignment
Installation Checking Alignment STEP 18. Remove the ties holding the switch blades to Remove tie their stationary main contact assemblies and the ties holding the toggle mechanisms to their stops. See Figure 20. Remove the 45-degree positioning stud from each rod guide. See Figure 16 on page 16. Open and close the switch slowly to ensure no operational difficulties are encoun tered due to undetected damage in shipping.
Page 19 Installation STEP 20. If there is still slack, repeat the procedure in Step 16 on page 17 but move the operating handle more than 20 degrees in the opening direction before torquing the clamp bolt on the lowest rod guide (or bell-crank) coupling. See Figure 22. Conversely, if considerable force is needed to move the handle to the fully Closed posi tion, or if the handle does not swing 180 degrees to the fully...
Page 20: Installing Key Interlock
Installation Installing Key Interlock STEP 21. The interlock group includes a Superior Type 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. If “provision only” is specifi ed, Interlock bolt the interlock is not included.
Page 21: Checking Operation
Installation Checking Operation Main contacts fully closed STEP 23. Open and close the switch slowly through its full travel. CAUTION The switch should be opened and closed slowly only when checking for alignment ≤ ⅛ -inches and complete closure. (3 mm) When opening or closing the switch in service, do not slow down or stop part way.
Page 22 Installation (d) In the unlikely event only one or two switch poles are fully closed, readjust the take-up screw(s) on the adjustable pipe cou pling(s) at the switch pole to increase or decrease the effective length(s) of the inter phase operating pipe(s). See Figure 28. Take-up screws Figure 28.
Page 23 Installation (e) With the operating handle as far as it will go in the opening direction, each switch operat ing lever should lie snugly against its open bumper. See Figure 29. There should be perceptible tension in the operating pipe, locking the switch open.
Page 24 Installation (g) When satisfactory travel adjustment of the operating handle and switch have been attained, torque the bolts on the adjustable lever arm of the bell-crank and the clamp bolt on the rod guide (or bell-crank) coupling to fi nal tightness. Then, tighten the associated piercing set screw, piercing the pipe, and con tinue turning until a fi rm resistance is felt.
Page 25 Installation STEP 24. Open and close the switch slowly several times. Blade-closing cam CAUTION The switch should be opened and closed slowly only when checking for alignment and complete closure. When opening or closing the switch in service, do not slow down or stop part way. Arcing can occur if the switch is partially open or partially closed.
Page 26 Installation (d) Move the blade in the opening direction and verify each blade shunt contact fi rmly engages its respective interrupter housing before the blade contacts disengage from the stationary main contact assemblies. See Figure 34. The shunt contacts may be bent as required to conform to these conditions.
Page 27 Installation (g) Move the blade assembly slowly toward the Closed position until the blade assembly is under the interrupter lever shaft. Verify the gap between the end of the interrupter lever shaft and the blade assembly is between 3⁄16-inch (5 mm) and 9⁄32-inch (7 mm). See Figure 36. (h) If the conditions described above are not met, adjust as follows.
Page 28: Connecting 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 38. 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 29: Operation
Operation Opening and Closing the Switch DANGER The interrupters and terminal pads of the Alduti- Rupter Switch energized with 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.

S&C Alduti-Rupter Installation And Operation Manual

Table of Contents

Introduction

Safety Information

Safety Precautions

Shipping and Handling

Installation

Operation

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