Description

RMC-131D/2 Differential current relay

Product Description

High precision and reliability: Advanced digital technology ensures the accuracy of measurement and stable operation of equipment.
Multiple measurement functions: It can measure three-phase current and provide unsteady state measurement and differential current protection.
LED display: With LED display fault status and relay operation status, easy to observe and fault diagnosis.
Thyristor control module: TCM-2 thyristor control module is used with RMC-131D-2 to provide controllable time action contact.
Installation method: Support 35mm DIN rail or base installation, to meet different installation requirements.
Communication interface: RS485 or Modbus communication interface, easy to connect with the automation system.
Application: Widely used in the field of monitoring and protection of power systems, such as the measurement and monitoring of power instruments, fault diagnosis and alarm of power systems, load management and energy management of power grids.
Protection: The RMC-131D-2 differential current relay protects the generator from short circuits and leakage currents, providing RMS measurement and peak-based fast response.
In addition, the RMC-131D-2 is available in variants such as the RMC-111D, RMC-121D and RMC-122D, which provide short circuit protection, short circuit protection with two sets of contacts (in parallel), and a combination of short circuit and overcurrent, respectively. These relays are part of DEIF’s complete family of relays for generator protection and control.

RMP-112D

Product parameter

Current rating (IRMS) : 5A or 1A, indicating the current range for which the relay is measured.
Rated thermal load: 0.2VA, indicating the thermal design load of the relay.
Operating temperature range: -40°C to +70°C, indicating that the relay can work properly at these temperatures.
Frequency range: 45 Hz to 65 Hz, the relay is suitable for AC current measurement in this frequency range.
Safety factor: 5, may refer to the redundancy or safe operating range of the relay design.
Accuracy category: 0.5S or 1.0, indicating the measurement accuracy level of the relay.
Input: Single-phase or three-phase current signal, the type of input signal that the relay can handle.
Output: Digital signal or analog signal, the type of output signal provided by the relay.
Communication interface: RS485 or Modbus, the communication protocol supported by the relay.
Installation mode: fixed installation, type of relay installation.
Shell material: Flame retardant plastic, the shell material of the relay, helps to improve safety.

Application field

Generator set protection: The RMC-131D-2 provides protection by comparing the differential current of each of the three phases to ensure the normal operation and safety of the generator set.
Marine: In Marine power systems, this relay is used to monitor and protect the ship’s generators and electrical equipment.
Offshore platforms: In environments such as offshore oil RIGS, the RMC-131D/2 plays a key role in ensuring the stability and safety of the platform’s power system.
Industrial automation: In automated production lines, the relay can be used to measure and monitor current, improving production efficiency and safety.
Monitoring and protection of power system: widely used in the field of monitoring and protection of power system, including the measurement and monitoring of power instruments, fault diagnosis and alarm, load management and energy management.
Power companies, factories, buildings, power plants and other fields and scenarios, suitable for the need to protect the generator set from ground faults

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