Emergency protective circuit arrangements for limiting excess current or voltage without disconnection

Child Classifications

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• H02H 9/001
• H02H 9/005
• H02H 9/008
• H02H 9/02 responsive to excess current
• H02H 9/04 responsive to excess voltage (lightning arrestors H01C7/12, H01C8/04, H01G9/18, H01T)
• H02H 9/08 Limitation or suppression of earth fault currents, e.g. Petersen coil