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At approximately 0616 hours on May 22, 200 … At approximately 0616 hours on May 22, 2001, Salem Unit 1 automatically tripped from full power.</br></br>The direct cause of the reactor trip was the generator lockout relay operation resulting from a main generator phase "A" differential current relay trip. Extensive troubleshooting determined that there was a degraded termination associated with the field wiring to the "A" phase main generator neutral current transformer. The affected field wiring was replaced. Follow-up testing determined the current transformer itself was also degraded. A modification was installed to rewire the protective relaying and metering circuits to alternate current transformers. The unit was returned to power operation (synchronized to the grid) on May 26, 2001.synchronized to the grid) on May 26, 2001. +
May 22, 2001 +
At approximately 0616 hours on May 22, 200 … At approximately 0616 hours on May 22, 2001, Salem Unit 1 automatically tripped from full power.</br></br>The direct cause of the reactor trip was the generator lockout relay operation resulting from a main generator phase "A" differential current relay trip. Extensive troubleshooting determined that there was a degraded termination associated with the field wiring to the "A" phase main generator neutral current transformer. The affected field wiring was replaced. Follow-up testing determined the current transformer itself was also degraded. A modification was installed to rewire the protective relaying and metering circuits to alternate current transformers. The unit was returned to power operation (synchronized to the grid) on May 26, 2001.synchronized to the grid) on May 26, 2001. +
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6 +
Modification date"Modification date" is a predefined property that corresponds to the date of the last modification of a subject and is provided by <a rel="nofollow" class="external text" href="https://www.semantic-mediawiki.org/wiki/Help:Special_properties">Semantic MediaWiki</a>.
15:10:09, 27 November 2017 +
July 20, 2001 +
May 22, 2001 +
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