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Cutler-Hammer W-VAC Instructions For Installation, Operation And Maintenance

Vacuum circuit breaker
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I.B. 8801C71H01
Instructions for Installation, Operation and Maintenance of 24kV
Type W-VAC Vacuum Circuit Breaker
Effective 12/98

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Summary of Contents for Cutler-Hammer W-VAC

  • Page 1 I.B. 8801C71H01 Instructions for Installation, Operation and Maintenance of 24kV Type W-VAC Vacuum Circuit Breaker Effective 12/98...
  • Page 2 CUTLER-HAMMER 24kV Type W-VAC Circuit Breaker I.B. 8801C71H01 WARNING WARNING THE CIRCUIT BREAKERS DESCRIBED IN IMPROPERLY INSTALLING OR MAINTAINING THIS BOOK ARE DESIGNED AND TESTED THESE PRODUCTS CAN RESULT IN DEATH, TO OPERATE WITHIN THEIR NAMEPLATE SERIOUS PERSONAL INJURY, OR PROPERTY RATINGS.

  • Page 3: Table Of Contents

    SECTION 1: INTRODUCTION PAGE Preliminary Comments and Safety Precautions 1-1.1 Warranty and Liability Information 1-1.2 Safety Precautions General Information Type W-VAC Vacuum Circuit Breaker Ratings (Table 1.1) Outlines and Dimensions SECTION 2: SAFE PRACTICES Recommendations SECTION 3: RECEIVING, HANDLING, AND STORAGE...
  • Page 4 CUTLER-HAMMER 24kV Type W-VAC Circuit Breaker I.B. 8801C71H01 PAGE Control Schemes 5-4.1 Timing 5-4.2 Secondary Disconnects 5-4.3 Undervoltage Trip Device Interlocks and Interfacing Levering Mechanism Operations Counter Ground Contact TOC Switch Operations SECTION 6: INSPECTION, MAINTENANCE AND TROUBLESHOOTING Introduction Frequency of Inspection and Maintenance 6-2.1 Qualified Personnel...
  • Page 5 Type W-VAC 24kV Circuit Breaker Outlines and Dimensions Typical W-VAC Tools and Accessories Front View W-VAC 24kV Vacuum Circuit Breaker W-VAC 24kV Vacuum Circuit Breaker with Front Cover Removed Rear View W-VAC 24kV Vacuum Circuit Breaker Typical W-VAC 24kV Escutcheon...

  • Page 6: Preliminary Comments And Safety Precautions

    CAUTION This technical document is intended to cover most aspects associated with the installation, application, operation and maintenance of the W-VAC Vacuum COMPLETELY READ AND UNDERSTAND THE MATERIAL PRESENTED IN THIS DOCUMENT Circuit Breakers. It is provided as a guide for BEFORE ATTEMPTING INSTALLATION, authorized and qualified personnel only.

  • Page 7: Type W-Vac Vacuum Circuit Breaker Ratings (Table 1.1)

    OF THESE RATINGS MAY CAUSE THE EQUIPMENT TO BE STRICTLY ADHERED TO. FAIL, RESULTING IN DEATH, BODILY INJURY AND PROPERTY DAMAGE. Table 1.1 Type W-VAC Vacuum Circuit Breaker Rated in Accordance with IEC Standard 56 (1) Identification Rated Values Circuit...

  • Page 8: Outlines And Dimensions

    OUTLINES AND DIMENSIONS 1600A Non Ventilated Uses 2000A Conductors as Shown Below. Up To 1600A Same as 1250A Breaker, Except as Shown Dimensionally. 2000A Only Figure 1-1 24kV Type W-VAC Circuit Breaker Outlines and Dimensions (millimeters) Effective 12/98 Page 3 of 47...

  • Page 9: Safe Practices

    CUTLER-HAMMER 24kV Type W-VAC Circuit Breaker I.B. 8801C71H01 SECTION 2: SAFE PRACTICES 2-1 RECOMMENDATIONS • Type W-VAC Vacuum Circuit Breakers are Do not work on a closed circuit breaker equipped with high speed, high energy or a breaker with closing springs operating mechanisms.

  • Page 10: Receiving, Handling, And Storage

    CUTLER-HAMMER 24kV Type W-VAC Circuit Breaker I.B. 8801C71H01 SECTION 3: RECEIVING, HANDLING AND STORAGE 3-1 GENERAL 3-3 HANDLING Type W-VAC Vacuum Circuit Breakers are subjected to complete factory production tests in WARNING accordance with IEC 56 and inspection before being packed. They are shipped in packages...

  • Page 11: Storage

    CUTLER-HAMMER 24kV Type W-VAC Circuit Breaker I.B. 8801C71H01 STORAGE If the circuit breaker is to be placed in storage, maximum protection can be obtained by keeping it packed as shipped. Before placing it in storage, checks should be made to make sure...

  • Page 12: Tools And Accessories

    3-6 TYPE W-VAC VACUUM CIRCUIT BREAKER WEIGHTS (TABLE 3.1) Tools and accessories, both standard and optional are available for use with the circuit breaker. Table 3.1 W-VAC Circuit Breaker Weights (1) (Figure 3-1) Rating Spin-Free Levering-In Crank: Used to crank breaker...
  • Page 13 CUTLER-HAMMER 24kV Type W-VAC Circuit Breaker I.B. 8801C71H01 OPTIONAL SPIN FREE LEVERING CRANK OPTIONAL PORTABLE LIFTER LIFTING YOKE STANDARD Figure 3-1 Typical Tools and Accessories for 24kV Type W-VAC Circuit Breaker Effective 12/98 Page 8 of 47...
  • Page 14 CUTLER-HAMMER 24kV Type W-VAC Circuit Breaker I.B. 8801C71H01 1. Front Cover 2. Levering Latch Release Handle 3. Circuit Breaker Wheel Pole Units. Figure 3-2 Front View: 24kV Type W-VAC Vacuum Circuit Breaker Effective 12/98 Page 9 of 47...
  • Page 15 4. Opening Spring 11. Closing Cam 5. Manual Charge Socket 12. Open/Close Indicator 6. Ratchet Wheel 13. Operations Counter 7. Charging Motor Figure 3-3 24kV Type W-VAC Vacuum Circuit Breaker with Front Cover Removed Effective 12/98 Page 10 of 47...
  • Page 16 CUTLER-HAMMER 24kV Type W-VAC Circuit Breaker I.B. 8801C71H01 1. Pole Unit 2. Primary Disconnect 3. Insulation Shroud 4. Opening to View Contact Pressure Spring Compression 5. Circuit Breaker Wheel Figure 3-4 Rear View Type 24kV W-VAC Vacuum Circuit Breaker Effective 12/98 Page 11 of 47...
  • Page 17 CUTLER-HAMMER 24kV Type W-VAC Circuit Breaker I.B. 8801C71H01 1. Manual Charge Socket 2. Spring Charged/Discharged Indicator 3. Rating Nameplate 4. Manual Open Button 5. Manual Close Button 6. Open/Close Indicator 7. Operations Counter Figure 3-5 Type 24kV W-VAC Escutcheon Effective 12/98...
  • Page 18 “Charged” flag is fully visible. Continued attempts to charge further may result in damage to the mechanism. Remove the maintenance tool. Close and trip Figure 4-1 Type 24kV W-VAC Circuit Breaker the circuit breaker. Repeat several times. Manual Charging Handle in Us Effective 12/98...
  • Page 19 CUTLER-HAMMER 24kV Type W-VAC Circuit Breaker I.B. 8801C71H01 4-8 ELECTRICAL OPERATION CHECK lifter and lifting yoke. Remove the lifting yoke when the circuit breaker is securely seated on After having completed all previous checks and the extension rails. tests, the circuit breaker is ready to be operated electrically.
  • Page 20 CUTLER-HAMMER 24kV Type W-VAC Circuit Breaker I.B. 8801C71H01 will automatically engage if not already engaged manually in the TEST position. To remove the circuit breaker from the structure, reverse the procedure just described by turning the levering crank in a counterclockwise direction.

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