OPERATION & MAINTENANCE MANUAL VACUUM CIRCUIT …

1 OPERATION & MAINTENANCE MANUAL . VACUUM CIRCUIT breaker . to 36kV. CONTENTS. Cl Sub Description Page No Cl No No INTRODUCTION 01. RECEIVING, HANDLING AND STORAGE 02. SAFETY ASPECTS 02. UNLOADING AND TRANSPORTATION 02. UNPACKING AND INSPECTION 02. HANDLING PROCEDURE 03. STORAGE PROCEDURE 03. CIRCUIT breaker SPECIFICATION 04. VCB DETAILS - 12 kV 05. VCB DETAILS - 33 kV 07. CONSTRUCTION 09. Operations 13. Control CIRCUIT 15. Operations for motorized charged spring 15. Interlock of Control CIRCUIT Plug 16. OPERATING INSTRUCTIONS 18. Operating Instructions for VCB rack-in and Rack Out 18. Control Plug Arrangement 19.

2 VCB Door Operating Instructions are as follows 20. VCB Operating Instructions are as follows 21. Interlocks 23. General Interlocks Provided 23. Padlocking Facility 23. MAINTENANCE AND INSPECTION 24. Check Points For Periodical Inspection 24. Check on VACUUM 26. Troubleshooting 27. MANDATORY SPARES 29. DO'S AND DON'TS 30. NOTES. INTRODUCTION SECTION B. - INTRODUCTION. The purpose of this Instruction MANUAL is to assist the user in developing safe and ef cient procedures for the unpacking, storage, installation, MAINTENANCE and use of the equipment. Field Service OPERATION such as rubber gloves, hard hat, safety glasses, face shields, ash clothing, etc.

3 , in accordance with established safety E&A can provide competent, well-trained Field Service procedures. Representatives to provide technical guidance and advisory assistance for the installtion, overhaul, repair and MAINTENANCE Training in rendering rst aid. of E&A equipment, processes and systems. Contact sales of ces or the factory for details. Safety Precautions In addition to other procedures described in this MANUAL as Quali ed Person dangerous, user personnel must adhere to the following: For the purpose of this MANUAL a Quali ed Person is one who is 1. Always work on de-energized equipment.

4 Always de familiar with the installation, construction or OPERATION of the energize a CIRCUIT breaker and remove it from the switchgear equipment and the hazards involved. In addition, this person has before performing any tests, MAINTENANCE or repair. the following quali cations: 2. Always perform MAINTENANCE on the CIRCUIT breaker after the Training and authorization to energize, de-energize, clear, spring-charged mechanisms are discharged. group and tag circuits and equipment in accordance with established safety practices. 3. Always let an interlock device or safety mechanism per-form its function without forcing or defeating the device.

5 Training in the proper care and use of protective equipment OPERATION & MAINTENANCE MANUAL 01. RECEIVING, HANDING AND STORAGE SECTION B. RECEIVING, HANDING AND STORAGE. - Safety Aspects - MANUAL trolley jack The VACUUM CIRCUIT breaker are designed for Indoor Never tilt the crates over as shown below. Non Compliance Application with all required safety features. with this stipulation may damage the equipment. Always keep it upright. Before carrying out any installation, OPERATION and MAINTENANCE , the service person should be fully acquainted with the relevant safety regulations covering this equipment as well as inside of the substation.

6 Check that the personnel operating the apparatus have this instruction MANUAL with them. We recommend that installation and commissioning should be carried out by quali ed and authorized personnel. Ensure compliance of local (site) legal and safety norms. - Unloading & Transportation The breaker is normally installed in breaker compartment of the switchgear panel for shipment. However if shipped as on Figure Crate Positioning independent unit, the VACUUM CIRCUIT breaker are dispatched in appropriate packaging for the prevailing conditions, - Unpacking & Inspection seaworthy packaging. Generally, each VCB is supplied along with complete Packing List : - VCB spring charging handle - VCB racking handle - Emergency trip rod Upon arrival at site, the consignment shall be unpacked within one (1) week and checked against the packing list or the delivery note.

7 TOP KEEP DRY LIFTING While unpacking wooden cases, top must be removed rst. ARRANGMENT. It is advisable to locate the VCB Unit at the sub-station before unpacking. (THE EQUIPMENT SHOULD BE EXAMINED. Unloading of VCB shall be done as per Instruction stickers IMMEDIATELY AFTER THE RECEIPT.). given on VCB unit. In case of shortage in supply or damage to the items, report VCB shall be unloaded with suf cient capacity of crane or the same within two (2) weeks, accompanied with a full Hydra. If unloading is done with wire ropes, t lifting ropes of description/ photographs of the missing/damaged parts.

8 Any appropriate load capacity with shackles and ensure that delay in making the claims will not be entertained. lifting hooks are locked properly. Transport VCB Unit upright only. Carry out loading operations only when it has been ensured that all precautionary measures to protect personnel and materials have been taken and using a - Crane, - Fork-lift truck and/or OPERATION & MAINTENANCE MANUAL 02. RECEIVING, HANDING AND STORAGE SECTION B. - Handling Procedure - Storage Procedure Packaging for air and sea transport: using two slings The VCB Unit be stored in a clean, dry and well- supporting 500kg each and lifting device.

9 Ventilated environment. Minimum height given on the below diagram shall be The storage area must shelter the equipment from respected. deterioration by agents like. - Water Mtr min - Water Vapour - Salt Laden air - Pollution of any type - Micro-organisms Store VCB Unit standing upright. Do not stack VCB Unit. VCB Unit are not weather-proof and should not be left outdoor where rain and moisture may cause irreparable damages. For temporary storage for less than two (2) weeks, cover the VCB Unit with plastic sheets to protect it against Figure : Handling of Functional Units ingress of dust.

10 Lifting Arrangement VCB Handle for movement TOP KEEP DRY LIFTING. ARRANGMENT. Figure 1: Handling the Vaccum CIRCUIT breaker OPERATION & MAINTENANCE MANUAL 03. CIRCUIT breaker SPECIFICATION SECTION B. CIRCUIT breaker SPECIFICATION. VK 10 L 25 H. breaker VOLATAGE CURRENT SHORT TIME breaker . MODEL RATING RATING CURRENT RATING CONFIGURATION. VK 12kV 10 12kV/ L 800A 25 25 H/Blank Single Bus kA. VW 24kV M 1250A D Double Bus 20 24kV 32 VY 36kV P 2000A. 30 36kV/ 40 40kA. R 2500A. 50 50kA. Q 3150A. OPERATION & MAINTENANCE MANUAL 04. CIRCUIT breaker SPECIFICATION SECTION B. C VCB DETAILS - 12 kV.