Measurement and protection
Measuring transducer and protection device for single- and three-phase power systems.
- connect a PLC via CAN bus
- use relays to push commands and to control a breaker
|3 true RMS voltage inputs|
|3 true RMS current inputs|
|Class 0.5 measurement accuracy|
|Configurable trip/control setpoints|
|Configurable delay timers for|
individual alarms (0.02 to 300.00 s)
|4 configurable relays (change-over)||2||4|
|1 “Ready for operation” relay|
|Switchable relay logic|
|2 kWh counters (max. 1012 kWh)|
|2 kvarh counters (max. 1012 kvarh)|
|CANopen / Modbus communication|
|Configurable via CAN bus / RS-485|
/ Service Port (USB/RS-232)
|Configurable via Service Port (USB / RS-232)|
|Voltage asymmetry (47)|
|Positive/negative load (32R/F)|
|Unbalanced load (46)|
|Phase shift (78)|
|Freely configurable time-dependent undervoltage monitoring for: FRT (fault ride-through)|
MFR-300 Multifunction Relay / Measuring Transducer with CANopen / Modbus Communication
The MFR 300 is a measuring transducer for monitoring single- and three-phase power systems. The MFR 300 has both voltage and current inputs for measuring an electrical power source. A digital processor makes it possible to accurately to measure true RMS values, regardless of harmonics, transients or disturbing pulses. The primary measured and calculated values are transmitted via CANopen / Modbus protocol to a supervisory control system.
The MFR 300 performs monitoring functions for mains decoupling, including four freely configurable time-dependent undervoltage monitoring functions for FRT (fault ride-through).
The primary measured values of voltage and current are used to calculate the real, reactive, and apparent power and the power factor (cosphi) values.
configuration via Woodward’s standard Software Toolkit.
USB configuration interface
USB port configuration interface. The PC/laptop side is seperated from the Woodward unit side through galvanic isolation.
part number: 5417-1251