ABB Stykače a nadproudová relé

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Vydal: ABB s.r.o, ELSYNN Autor: ABB ELSYnn

Strana 439 z 455







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\ V + + Load Indirect earthed system (Isolated system) Direct earthed system Centre earthed system Alternative connection The load placed between the three contacts indirect earhted system fully isolated system. Load + o V \ \ o o + Indirect earthed system (Isolated system) Points consider • The above relates power circuit switching. + - o c . For further information regarding connections see Technical paper. 10 switching contactors 1SFC101004B0201 Load . This connection recommended systems according to the configurations below. The SCPD (Short Circuit Protection Device) must comply with applicable protection rules. not connected ac­ cording the configuration below, fault earth could result one two contacts breaking the full load which the contactor is not approved for. • The direction the current must shown the contactor front label. • Connection bars for connecting three contacts series are not delivered with the contactor standard, but are available accessories.Connections Recommended connection All three contacts connected series without the load between