Relay of control of phases and tension of RKFN-RVN-ML (ARTICLE of RSTB)

The relay of control of phases and tension of RKFN-RVN-ML is a device which is used as the alarm system and protection of electroinstallations, especially asynchronous electric motors in three phase alternating current mains, in the following cases: overstrain, power failure, break of a phase, error of alternation of phases. The relay can be used in industrial and household electroinstallations with tension 380V, and also the reserve and (AVR) can be applied in systems of automatic input. On the RKFN-RVN-ML front panel two adjustments of the following parameters are located: an overstrain or power failure, time delay on an overstrain or on power failure.