Voltage, Phase Unbalance and Sequence Relay RNPP-311.1
Voltage, Phase Unbalance and Sequence Relay RNPP-311.1 is designed to disconnect the load 400 V, 50 Hz in case of inadmissible voltage oscillations in the network with time duration of at least 0.02 s.
Voltage, Phase Unbalance and Sequence Relay RNPP-311.1 is designed to disconnect the load 400 V, 50 Hz in case of inadmissible voltage oscillations in the network with time duration of at least 0.02 s.
Voltage, Phase Unbalance and Sequence Relay RNPP-311.1 is designed to disconnect the load 400 V 50 Hz in the following cases:
- Inadmissible voltage oscillations in the network with time duration of at least 0.02 s;
- Amplitude symmetry breaking of the of the mains voltage (phase unbalance);
- Loss, error in sequence and sticking of the phases.
DEVICE OPERATION
Voltage, Phase Unbalance and Sequence Relay RNPP-311.1 ensures continuous monitoring of the voltages in three-phase network by comparing them with the values set by the User of thermoregulator as U nom ±%.
The device will disconnect the load if the voltage value exceeds the limits set by the User.
Voltage, Phase Unbalance and Sequence Relay RNPP-311.1 is provided with single combined adjustable setting to actuate based on maximum/minimum voltage.
For example: in the position 10%, the device should be actuated at voltage increase/decrease by 10% of the rated value.
The device can be used in the following conditions: normal operation; voltage failure;
ARC time delay.
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