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

I.B. 3A74791H04Page 4Effective 7/97SECTION 2: SAFE PRACTICES2-1 RECOMMENDATIONSType W-VAC Vacuum Circuit Breakers are equippedwith high speed, high energy operating mechanisms.They are designed with several built-in interlocks andsafety features to provide safe and proper operatingsequences. Cell interlocks used with drawout circuitbreakers are meant to interact with the appropriate cellinterface and levering mechanism.TO PROTECT THE PERSONNEL ASSOCIATED WITHINSTALLATION, OPERATION, AND MAINTENANCEOF THESE CIRCUIT BREAKERS, THE FOLLOWINGPRACTICES MUST BE FOLLOWED:• Only qualified persons, as defined in the LocalElectrical Code, who are familiar with the installationand maintenance of medium voltage circuits andequipment, should be permitted to work on these cir-cuit breakers.• Read these instructions carefully before attemptingany installation, operation or maintenance of these cir-cuit breakers.• Always remove the circuit breaker from its enclosurebefore performing any maintenance. Failure to do socould result in electrical shock leading to death,severe personal injury or property damage.• Do not work on a drawout circuit breaker with a sec-ondary test coupler engaged. Failure to disconnectthe test coupler could result in an electrical shockleading to death, personal injury or property damage.• Do not work on a closed circuit breaker or a breakerwith closing springs charged. The closing springsshould be discharged and the main circuit contactsopen before working on the circuit breaker. Failure todo so could result in cutting or crushing injuries.• Do not use an open circuit breaker by itself as the solemeans of isolating a high voltage circuit. Remove thecircuit breaker to the Disconnect position and followgood lock-out and tagging rules as well as any otherapplicable codes, regulations and work rules.• Do not leave a drawout circuit breaker in an intermedi-ate position in the cell. Always have the circuit breakereither in the Disconnect/Test or Connected position.Failure to do so could result in a flash over and possi-ble death, personal injury or property damage.• Always remove the maintenance tool from the circuitbreaker after charging the closing springs.• Circuit breakers are equipped with safety interlocks.Do Not remove, interfere with or in any manner defeatthem. This may result in death, bodily injury or equip-ment damage.• Do not work on a circuit breaker suspended from a lift-ing yoke or chains. Maintenance work should be per-formed on a solid work surface, such as the floor.! WARNING