GE SecoGear Installation, Operation And Maintenance Manual

Also see for SecoGear: Application guide User manual

Contents

SecoGear – Installation, Operation and Maintenance Manual 46 of 56Checks After the Circuit Breaker Is De-energizedAt the time of inspection after de-energizing thecircuit breaker check each of the following items:1. Manually operate the circuit breaker several times, checkingfor obstructions or excessive friction. Manual closing of anelectrically operated circuit breaker may be performed bythe following two steps:a. To charge the mechanism springs, pull the operatinghandle down until it stops (about 90°) ten times. The chargeindicator will show CHARGED on a yellow background.b. Depress the CLOSE button on the front of the circuitbreaker. The springs should discharge and, if the latch isproperly reset, the circuit breaker will close.c. Depress the OPEN button on the front of thecircuit breaker.Before EnergizingA periodic maintenance schedule must be established toobtain the best service from the switchgear. At minimum,you must perform an annual check of the switchgear devicesand all connections. Equipment subject to highly repetitiveoperation may require more frequent maintenance.Keep a permanent record of all maintenance work, including• A list of periodic checks and tests made, along with the date• The condition of the equipment• Any repairs or adjustmentsMaintenance employees must follow all recognizedsafety practices, such as those contained in NFPA70B: Electrical Equipment Maintenance, and NFPA70E: Standard for Electrical Safety in the Workplaceand in company or other safety regulations.Circuit Breaker And Instrument CompartmentsA circuit breaker inspection is recommended at least oncea year. More frequent inspections are recommended wheresevere load conditions, dust, moisture, or other unfavorableconditions exist, or if the vital nature of the load warrants it.Always inspect the circuit breaker after a short-circuit currenthas been interrupted.Circuit Breaker Test for Proper OperationTest and inspect all circuit breakers for proper operationas follows:9. MaintenanceSolid insulation surrounding an energized conductor andpower apparatus must never be relied upon to provideprotection to personnel.WARNING!De-energize equipment completely before doingmaintenance work on any devices, connections, buswork, circuit breaker, or feeder cable compartments.This includes de-energizing any connections to outsideprimary or secondary sources, such as transformers, tielines, etc.WARNING!For specific information regarding the maintenance ofdevices such as circuit breakers, relays, and meters, referto the manual provided with each device, or downloadthe instructions from the manufacturer’s website.1. Operate each circuit breaker while in the TEST position andcheck all functions. This is particularly important for circuitbreakers that normally remain in either the opened or closedpositions for long periods of time.2. Remove the circuit breakers from their compartments to aclean maintenance area.Primary equipment must be completely de-energizedwhile conducting tests of control circuits. Be sure todisconnect all areas of backfeed from secondary circuits,as well as external sources.WARNING!