Relay RNPP-311 m

Multifunction microprocessor-based relay voltage distortion and phase sequence RNPP-311 M is a modification of the relay RNPP-311, and is intended for:

• control of the allowable voltage level;

• control the correct sequence and the lack of adhesion of the phases;

• control pornofanatic and the symmetry of the network voltage (unbalance);

• disconnecting the load 380/220 V, 50 Hz by breaking the supply circuit of the load with poor network voltage. The time relay (TCP) is specified by the user;

• quality control voltage when switching off the load, and automatic reclosing (AR) after her recovery voltage parameters. The reclosing time (ton) is specified by the user;

• indexing of the accident when the emergency situation and indicating the presence of voltage on each phase.

In the relay, you can select the type of the controlled network (380 or 400 V) and a set of protective functions. Using the switches, the user can select different modes of operation:

- full control of the supply voltage;

- control mode, minimum/maximum voltage;

- control mode, the minimum voltage;

 - control mode, the maximum voltage;

 - control mode having a phase;

 - control mode, incorrect rotation and the presence of adhesions between the phases;

  - mode control of unbalance.

      Control phase is retained at any position of the switches, including when they are in the off position.

                                    In relay RNPP-311 M you can connect the external power supply 24V DC (optional).

      The device can be powered from the network - controlled voltage is simultaneously the supply voltage. The internal circuit of the relay is powered by three-phase capability even from one of the phases (if "zero"). The relay output has two groups of independent changeover contacts.