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Three-phase Voltage and Phase Control Relay RNPP-301

Three-phase Voltage and Phase Control Relay RNPP-301

In stock

Voltage relay RNPP-301 is designed for protection of three-phase consumers against main types of failures in the electric power network such as:

33.6 EUR
Main characteristics
  • Description
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  • Detailed characteristics

Voltage relay RNPP-301 is designed for protection of threephase consumers against main types of failures in the electric power network such as:

  • deviation of voltage rms value beyond permissible thresholds;
  • failure of phase sequence and sticking;
  • failure of full-phase and symmetry of the supply-line voltage.

The device ensures monitoring of the main parameters of the electrical network, and disconnects the load in case of deviation.

Relay also provides monitoring of the condition of power contacts of the external magnetic starter before and after load starting by means of control of their operation state (burning or sticking).

LEDs at the Relay face panel provide initiation of the following:

  • Voltage in the network;
  • Load condition (ON or OFF);
  • Type of failure occurred.

The front panel is equipped with six adjusting potentiometers, which allow for the User to determine the following:

  • Trigger threshold acc. to max permissible voltage value;
  • Trigger threshold acc. to min permissible voltage value;
  • Trigger threshold acc. to permissible phase (voltage) unbalance value;
  • Relay actuation time at emergency voltage drop;
  • Relay actuation time at other types of failures in the network;
  • Load starting time delay after restoration of the parameters in the network.

The device can operate in the control mode of phase or line voltage (at the opinion of the User).

At the moment, three versions of this device are commercially available.

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