Woodward MFR13 Multi-function Generator Protection Relay

Product Description

Woodward MFR13 is a Multi Function Relay, an intelligent generator protection & measurement unit for generator sets and grid connection switchgears. It measures true RMS 3-phase voltage and current, integrates comprehensive ANSI protection functions, and optional synch-check function. Front panel equipped with LCD display and operation keys for real-time monitoring of voltage, current, frequency, active/reactive power and fault event logging. Multiple programmable relay contact outputs are available to drive circuit breaker trip and alarm circuits. RS485 Modbus RTU communication is supported to transmit data to host control systems. Two mounting options: flush panel mount or DIN rail mount. This model is end-of-life, replaced by MFR300. It is supplied as spare parts for legacy power plants, wind turbines and diesel generator projects.

Technical Parameters

• Model: MFR13
• Type: Multi-function Generator Protection & Measurement Relay
• Measuring Input: 3-phase PT voltage, 3-phase CT current (CT secondary 1A/5A optional; PT secondary 100Vac/400Vac/690Vac optional)
• Protection Functions: Overvoltage / undervoltage, overfrequency / underfrequency, voltage unbalance, reverse power, overcurrent, earth fault, loss of excitation, overload (ANSI protection logic)
• Optional Features: Synch-check, 4~20mA analog outputs, pulse output
• Relay Outputs: 3~8 programmable relay contacts (depends on GP/GPX/GPY-I variants)
• Communication: RS485 Modbus RTU slave (GPX-I / GPY-I / K08 versions)
• Power Supply: Standard 24VDC; GPY-I-N wide range 90~265V AC/DC
• Mounting: B flush panel mount / M DIN rail mount
• Display: LCD screen, status LED indicators (Run, Alarm)
• Features: True RMS measurement, fault event log, configurable protection settings
• Operating Temperature: -20℃ ~ +60℃
• Product Status: OEM EOL, successor model MFR300, industrial spare part

Product Applications

1. Integrated protection for diesel generator sets, gas turbines, small hydro generators and wind turbine grid interconnection.
2. Cogeneration plants, on-site power stations and offshore platform generator cubicles for electrical fault protection, tripping and alarming.
3. Generator grid paralleling, synch-check, monitoring voltage, frequency and phase difference for breaker closing condition judgment.
4. Electrical parameter measurement: voltage, current, power, power factor and frequency, data uploading to DCS/PLC.
5. Maintenance, spare parts replacement and protection setting retrofitting for legacy Woodward power generation control systems.

Series Models

• MFR13/GP: Base version with 3 programmable relays and basic generator protection
• MFR13/GPX: Enhanced version, 8 relays, true RMS measurement, synch-check
• MFR13/GPX-I: GPX plus RS485 Modbus RTU communication
• MFR13/GPY-I: GPX-I plus 3 channels of 4~20mA analog outputs and pulse output
• MFR13/GPY-I-N: GPY-I with wide-range AC/DC universal power supply
• MFR13/K08: Enhanced GPX-I with additional 2nd earth fault protection
• MFR300: New generation multi-function relay, direct replacement for MFR13