PSMG sets A and B protective relaying

Technical Report · Mon Jul 24 00:00:00 EDT 1978

DOI:https://doi.org/10.2172/6609362· OSTI ID:6609362

Burnett, J. E.

The ''TAN/LOFT 13.8 kV, 2.4 kV, and 480 V Relay and Circuit Breaker Coordination Study'' presented an analysis to determine overcurrent settings for the LOFT Power System protective relays including those for the drive motors of the PSMG sets. This LTR is written to form the basis of the relay settings entered in Specification ES-60238 Rev. B, for protection of the PSMG generator, primary coolant pump motor and interconnecting power cable. A momentary commercial power voltage dip occurred on January 10, 1978 which caused a trip of the PSMG field breakers. A corrective design to prevent reoccurrence is discussed and recommendations are presented.

• Research Organization: Idaho National Engineering Lab., Idaho Falls (USA)
• DOE Contract Number: EY-76-C-07-1570
• OSTI ID: 6609362
• Report Number(s): LTR-1310-26
• Country of Publication: United States
• Language: English

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21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
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CALIBRATION
ELECTRICAL EQUIPMENT
EQUIPMENT
LOFT REACTOR
PWR TYPE REACTORS
REACTOR PROTECTION SYSTEMS
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RELAYS
RESEARCH AND TEST REACTORS
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WATER COOLED REACTORS
WATER MODERATED REACTORS