The device HIS 24V DC/N, TU 4220-004-79740390-2009 is designed for continuous automatic monitoring of insulation resistance of positive and negative busbar of 24 V DC networks with isolated neutral (IT-networks) in relation to busbar PE. Visual control of decrease of insulation resistance below the set value is carried out by means of indicators. For remote monitoring, the HIS 24V DC/N is additionally equipped with a switching dry contact for remote signalling.
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