Electrical switching device or trip unit acquiring predetermined settings from another electrical switching device or trip unit
作者： Joseph J. Matsko , Randal P. Shvach
DOI:
关键词:
摘要: A first trip unit for interconnection with a second includes current transformers and potential sensing current, voltage frequency conditions of circuit breaker's separable contacts. microprocessor-based mechanism provides signal, which is employed by the operating to open contacts as function sensed electrical related predetermined values. The microcomputer's transceiver communicates over passive two-wire communication cable acquire settings unit. microcomputer firmware routine employs acquired its
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