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Gas Insulated Switchgear electrical switchgear Calibration electronic weighing device

NEC Medium Voltage Switchgear Design Requirement ... and Test Device. A term applied to a switchgear assembly accessory device which can be inserted in place of a drawout circuit breaker for the purpose of (1) grounding the main bus and external circuits connected to the switchgear assembly and (2) primary circuit testing. Instrument Transformers.

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