ABB PR512 Manual
Also see for PR512: Operator's manual
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154Protection functions 16Earth fault external toroid 16Protection against earth fault (51N) 16Selection of threshold Io> value 16Selection of type of Io> curve 17Selection of to> trip time 17Protection against instantaneous or delayed earth fault (50N) 18Selection of Io>> threshold value 18Selection of to>> trip time 18Rated and setting currents 19PR512/P (50-51-50N-51N) UNIT |
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