Woodward MFR300-71M/K45 8444-1111 8444-1112
MFR 300
Multifunction Relay / Measuring
Transducer with CANopen /
Modbus Communication
APPLICATIONS
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.
The list of measured values includes
• Measured
o Voltage
Wye: VL1N / VL2N / VL3N
Delta: VL12 / VL23 / VL31
o Frequency fL123
o Current IL1/IL2/IL3
• Calculated
o Average voltage VØL123 / Vmin / Vmax
o Average current IØL123 / Imin / Imax
o Real power Ptotal / PL1 / PL2 / PL3
o Reactive power Qtotal
o Apparent power Stotal
o Power factor (cosφL1)
o Active energy kWhpositive/negative
o Reactive energy kvarhleading/lagging
DESCRIPTION
Features
• 3 true RMS voltage inputs
• 3 true RMS current inputs
• Class 0.5 accuracy for voltage,
frequency and current
• Class 1 accuracy for real and
reactive power or energy
• Configurable trip/control setpoints
• Configurable delay timers for
individual alarms (0.02 to 300.00 s)
• 4 configurable relays (change-over)
• 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)
• 24 Vdc power supply
Protection (all) ANSI #
• Over-/undervoltage (59/27)
• Over-/underfrequency (81O/U)
• Voltage asymmetry (47)
• Overload (32)
• Positive/negative load (32R/F)
• Unbalanced load (46)
• Phase shift (78)
• Overcurrent (50/51)
• df/dt (ROCOF)
• Ground fault
• QV monitoring
• Voltage increase
• Freely configurable time-dependent
undervoltage monitoring for:
o FRT (fault ride-through)
Accuracy …………………………………………………………………………… Class 0.5
Power supply …………………………………………………. 12/24 Vdc (8 to 32 Vdc)
Intrinsic consumption ………………………………………………………….. max. 5 W
Ambient temperature (operation) ……………. -20 °C (-4 °F) / 70 °C (158 °F)
Ambient temperature (storage) …………….. -40 °C (-40 °F) / 85 °C (185 °F)
Ambient humidity ……………………………………………… 95 %, non-condensing
Voltage ……….. Rated value /∆: [1] 69/120 Vac or [7] 400/690 Vac
Rated voltage Vph-ground: [1] 150 Vac or [7] 600 Vac
Max. cont. voltage Vph-ph: [1] 150 Vac or [7] 862 Vac
Rated surge voltage: [1] 2.5 kV or [7] 6.0 kV
Measuring frequency ……………………………………………………….. 45 to 65 Hz
Linear measuring range …………………………………………………… 1.25 × Vrated
Input resistance ……………………………………………………………… [1] >0.5 MΩ
[7] >2.0 MΩ
Max. power consumption per path …………………………………………… 0.15 W
Current (Irated) ……………………………………………………….. [1] ../1 A, [5] ../5 A
Linear measuring range ………………………………………………………… 3 × Irated
Max. power consumption per path ……………………………………….. < 0.15 VA
Rated short-time current (1 s) …………………………….. [1] 10 Aac, [5] 50 Aac
Relay outputs …………………………………………………………………….. isolated
Contact type ……………………………………………………..Form C (change-over)
Contact material ……………………………………………………………………. AgCdO
Load (GP) ……………………………………………………………. 2.00 Aac@250 Vac
………………..2.00 Adc@24 Vdc / 0.36 Adc@125 Vdc / 0.18 Adc@250 Vdc
Pilot duty (PD) ………………………………………………………………………………….
………………..1.00 Adc@24 Vdc / 0.22 Adc@125 Vdc / 0.10 Adc@250 Vdc
Housing ………………………………………………. Type Extrusion profile UM122
for DIN rail mounting
Dimensions …………………………………………………………. 146 × 128 × 50 mm
Connection ………………………………………… screw/plug terminals depending
on connector 2.5 mm² (14 AWG)
Protection system ……………………………………………………………………… IP20
Weight ………………………………………………………………………… approx. 300 g
Disturbance test (CE) ………. tested according to applicable EN guidelines
Listings …………………………… UL/cUL listed (File No.: E231544), GOST-R