Multifunctional differential protection relay MDR-2
is designed for differential current protection of three-phase generators and electric motors. With the help of current transformers MDR-2 monitors currents in all three phases on both sides of the object.
Also, the MDR-2
relay provides the following functions:
warning signaling - setpoint and delay values are programmed;
protection operation - programmatically set the values of the setpoint and delay.
The obtained values of the measured values are displayed in engineering units on the LCD display. The MDR-2 has an alarm log and supports the Modbus RTU communication protocol.
- Supply voltage: 12-24V DC;
Measuring current: 1 and 5 A;
Frequency: 30-70 Hz;
Protective performance: IP 54 - front panel; IP 20 - rear panel;
Ambient temperature: -25 ˚ С .... + 70 ˚ С.
residual current protection relay is designed to protect generator sets on ship and onshore installations. It compares the differential current of each of the three phases with a given setpoint value. The RMC-131D
responds to maximum differential current across three phases. When the setpoint value is exceeded, the output relay is switched on, followed by the switching off of the controlled device.
- Measuring voltage range: 57.7 - 690 VAC current
Measured current range: 0.4 - 5 A
Frequency response: 45 - 65 Hz
Working temperature range: -25 ° C - + 70 ° C
Protective performance: IP40 (case); IP20 (terminals)