The WOODWARD 8444-1019 F UMT1 is a high-precision Universal Measuring Transducer designed for the comprehensive monitoring of electrical power systems. This versatile device acts as a gateway between high-voltage electrical parameters and industrial control systems, converting complex AC signals into standardized analog or digital data for PLCs and engine controllers.

 

Product Overview

The UMT1 (Universal Measuring Transducer) series is engineered to provide accurate measurement of voltage, current, power, and frequency. The 8444-1019 F model is specifically built to withstand the rigorous demands of industrial power generation, offering a compact and reliable solution for real-time electrical telemetry. It serves as a critical feedback component for Woodward’s wider power management and load sharing ecosystems.

Technical Specifications (Datasheet)

 

Key Technical Features

• Multi-Parameter Tracking: Simultaneously measures Phase Voltage (L-L, L-N), Current, Active/Reactive Power (kW/kVAR), and Power Factor (cos φ).
• Configurable Scaling: Allows users to define the relationship between the measured primary electrical values and the output analog signal range.
• True RMS Measurement: Utilizes high-speed digital sampling to ensure accurate readings even in the presence of non-linear loads and harmonic distortion.
• Compact DIN-Rail Design: Minimizes control panel footprint while providing accessible terminal blocks for field wiring.

 

Country of Origin

Country of Origin: Germany / USA (Woodward Kempen)

 

Primary Application Fields

The Woodward UMT1 8444-1019 is utilized across various energy and automation sectors:

• Switchgear Manufacturing: Integrated into LV/MV panels for local monitoring.
• Generator Set Control: Providing kW and kVAR feedback to Woodward 2301D or EasyGen controllers.
• Building Management Systems (BMS): Monitoring total facility power consumption and phase balance.
• Renewable Energy: Tracking output efficiency for small-scale hydro and wind turbine installations.

 

Operating Instructions

1. Mounting: Clip the transducer securely onto a standard 35mm DIN rail. Ensure the module is grounded through the DIN rail or a dedicated ground terminal.
2. CT/PT Connection: Connect the secondary leads of your Current Transformers (CT) and Potential Transformers (PT) to the designated input terminals. Caution: Never open-circuit a live CT secondary.
3. Output Wiring: Connect the 4-20mA output channels to the analog input card of your PLC or governor. Use shielded twisted-pair cable to prevent signal noise.
4. Configuration: If the unit features DIP switches or a serial interface, set the transformer ratios (e.g., 400:5 CT ratio) to ensure the output signal scales correctly to the actual primary power.
5. Status Check: Upon power-up, verify the “Run” LED is illuminated. Use a multimeter to verify that the analog output corresponds to the measured system load.