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8444-1091 MFR300 Measuring Transducer Woodward

8444-1091 MFR300 Measuring Transducer Woodward

The Woodward 8444-1091, also cataloged as the 8444-1091 Multifunction Relay and Measuring Transducer, operates as a dedicated hardware component for single-phase and three-phase power monitoring within MFR300 Series platforms.

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SKU: 8444-1091
Vendor: Woodward
Category: MFR300 Measuring Transducer
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The Woodward 8444-1091, also cataloged as the 8444-1091 Multifunction Relay and Measuring Transducer, operates as a dedicated hardware component for single-phase and three-phase power monitoring within MFR300 Series platforms.

Hardware Specifications

Parameter Specification
Model 8444-1091
Brand Woodward
Origin USA
Weight 2.45 kg
Dimensions 273.6 mm x 214.1 mm x 59.2 mm
Operating Temp -20 deg C to +70 deg C (-4 deg F to +158 deg F)
Power Consumption Maximum 5 W
Power Supply Input 12/24 VDC (8 to 32 VDC operational range)
Voltage Inputs 3 true RMS voltage input channels
Current Inputs 3 true RMS current input channels
Voltage/Current/Freq Accuracy Class 0.5
Power/Energy Accuracy Class 1 (Real and Reactive)
Communication Protocols CANopen, Modbus

Actuator Loop Feedback Response and Thermal Dissipation Profiles

Operating across a wide 8 to 32 VDC power supply range, the 8444-1091 samples 3 true RMS voltage and 3 true RMS current channels to provide Class 0.5 precision across electrical variables. Onboard digital signal conditioning minimizes latency to preserve rapid actuator loop feedback response and load-sharing dynamics in engine and generator control loops. Internal board components consume a maximum of 5 W, optimizing thermal heat sink dissipation profiles within the compact 273.6 mm x 214.1 mm x 59.2 mm enclosure across the extended -20 deg C to +70 deg C operating range.

Frequently Asked Questions

Q: What power supply range is supported by the 8444-1091 auxiliary power input?

A: The module operates on a nominal 12/24 VDC supply with a wide input tolerance window of 8 to 32 VDC.

Q: What measurement accuracy classes apply to the voltage, current, and power telemetry?

A: Voltage, current, and frequency measurements adhere to Class 0.5 accuracy, while real and reactive power/energy readings meet Class 1 standards.

Q: Which fieldbus protocols are integrated for supervisory data access?

A: The hardware natively supports CANopen and Modbus communication protocols for telemetry and protection management.

Field Installation Guidelines

  • Verify that all DC power feeds and high-voltage AC sense lines are fully de-energized prior to connecting wiring to the unit.
  • Short-circuit all secondary current transformer (CT) leads before disconnecting field wiring to prevent dangerous inductive high-voltage hazards.
  • Utilize twisted-shielded pair conductors for CANopen and Modbus communication buses, routing them clear of high-current power cables.
  • Attach the module ground conductor directly to the primary panel earth ground bar using short, low-impedance grounding connections.