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What is Fixing Mercury Switch Issues in Plants about?

The document discusses issues with mercury switches falsely triggering at two hydroelectric plants due to vibration. Specifically: 1) For the first two years of operation, the plants would trip off or lock out due to mercury switches being activated by vibration from synchronization or changes in loading. 2) An investigation found the switches were mounted flat, allowing vibration to splash the mercury and close the contacts. 3) Anti-vibration mercury switches were installed on generator bearing switch

Author

José Sánchez

Language

EN