Description
Woodward MFR300-71M
Technical Specifications
- Measuring Voltage: Rated for 690 Vac maximum measuring voltage.
- Current Rating: Supports 5 A current inputs.
- Communication Protocols: Equipped with CANopen and Modbus communication interfaces.
- Protection Level: IP65 rated enclosure for harsh environments.
Functional Features
- True RMS Measurement: Accurately measures voltage and current regardless of harmonics, transients, or disturbing pulses.
- Relay Outputs: Features 4 configurable relays (change-over) and 1 “Ready for operation” relay.
- Counters: Includes 2 kWh counters and 2 kvarh counters for energy tracking.
- Configurable Setpoints: Allows independent trip/control setpoints and delay timers for individual alarms.
Application Scenarios
Extensively applied in power generation, industrial manufacturing, and utility substations for overcurrent, overfrequency, and earth fault protection.
Performance Parameters
- Rated Voltage: 24 VDC or 48 VDC.
- Rated Current: 5 A.
- Hysteresis: 0.05 Hz for overfrequency monitoring.
Material Composition
Housed in a rugged, IP65-rated enclosure designed to withstand severe industrial dust and moisture conditions.
Structural Characteristics
- Dimensions: Compact module measuring 146 mm x 128 mm x 50 mm.
- Mounting: Designed for standard DIN rail mounting.
Working Principle
The device continuously samples electrical parameters, processes them via internal digital signal processing, and triggers configurable relay outputs when predefined protection thresholds are exceeded.
Installation Requirements
Must be securely mounted on a DIN rail. Wiring must adhere to the specific terminal layout for power supply, CAN bus, and measuring inputs.
Precautions for Use
Observe strict electrostatic discharge (ESD) awareness during handling. Ensure proper grounding to maintain IP65 integrity and prevent EMI interference.
