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Converter Station electrical switchgear unit electronic weighing device

Relay symbols and device numbers; selection from IEC 617 ...· PDF fileelectrical lockout (see device function 86) on abnormal conditions.] 6 Starting circuit breaker is a device whose principal function is to connect a machine to its source of starting voltage. 7 Rate-of-rise relay is a relay that func-tions on an excessive rate of rise of current. 8 Control power disconnecting device is a disconnecting device,

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