Woodward MFR 300 Multifunction Relay / Measuring

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