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NHSE (2004) 11: Circuit Breaker VSI and VMV - 11kV and 6.6kV.
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Document type:Publication
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Author:NHS Estates
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Published date:22 November 2004
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Primary audience:Professionals
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Publication format:Electronic only
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Gateway reference:NHSE (2004) 11
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Series number:NHSE (2004) 11
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Pages:2
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Copyright holder:Crown
An incident has been reported in which the feeder OCB tripped due to a cable damage incident 40m from the substation. Approximately 4 minutes later the two 11kV transformer incomer OCB's tripped. The rear door of the substation was blown out. This note explains the access and operational restrictions that should apply.
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