The relay is intended for continuous control of currents in power-supply circuits of 3-hfazny electroinstallations of alternating current and protective shutdown of loading at emergence of emergency operation. At indirect connection via transformers of current of the relay can be used in lines on any tension.
The relay is modification of the RKZ-I, RKZ-IM relay, but contains a number of differences:
* existence of the relays of sensors of current which are built in the case
* lack of the built-in control unit external signaling devices
The relay is similar on functional and technical characteristics to earlier developed RKZ, RKZM-I, RKZM-II relays, but has the following advantages:
* existence of the relays of indicators of the reason of an emergency shutdown which are built in on the front panel that allows to define quickly in emergency situations a cause of accident, without using the PU-02 panel
* the increased resistance to a network overstrain
Relays are manufactured two standard ratings: 25 and 50 that corresponds to a limit of controlled currents in amperes.