Tham khảo tài liệu 'operation, maintenance and repair of auxiliary generators episode 9', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | TM 5-685 NAVFAC MO-912 2 Troubleshooting. Use recognized industrial practices as the general guide for servicing. Refer to manufacturer s literature for specific information on individual voltage regulators. Troubleshooting procedures include the following a Check voltage for compliance with manufacturer s specifications. b Check for 1oose or insecure electrical connections. c Check for correct setting refer to manufacturer s literature. d Check for unregulated voltage. Refer to manufacturer s literature. e Check the enclosure. Should be weather tight f Check motor for proper operation and loose connections. Clean and lubricate as required. Refer to manufacturer s literature for details. g Voltage regulators and associated equipment are normally mounted within switchgear equipment and are interconnected with different components. The proper operation and troubleshooting of voltage regulator equipment can depend on these different components. Perform the procedures in the following table Table 5-2. Switchgear equipment troubleshooting. Note Refer to manufacturer s literature for specific information on individual equipment. Cause Remedy WATTHOUR METER INACCURATE Meter may be dirty or damaged Install new meter return faulty meter to repair depot for repair and calibration Faulty wiring or connections Inspect and repair as necessary WATTHOUR METER FAILS TO REGISTER Blown potential transformer fuse broken wires or other fault in connections Wedge or block accidently left at time of test or inspection Renew blown fuses Check wiring and repair as required Remove wedge or block Verify that meter is in good operating condition DAMAGED CONTROL INSTRUMENT TRANSFER SWITCH OR TEST BLOCKS Burned or pitted contacts Dress or clean burned contacts or replace with new contacts if neces- sary RELAYS FAILING TO TRIP BREAKERS Improper setting Adjust setting to correspond with circuit conditions. Refer to manufacturer s instructions Dirty corroded or tarnished con- Clean contact with .
