Woodward 8444-1019 – UMT 1 Measuring Transducer

Product Overview

The 8444-1019 is a Woodward UMT 1 measuring transducer designed for three-phase electrical measurement in generator and power-distribution control systems. It measures true RMS voltage and current values and converts the calculated electrical parameters into configurable analog outputs for connection to higher-level control or monitoring equipment. This specific A6 configuration provides six analog outputs and a pulse output for kWh/kVARh energy measurement. Woodward documentation identifies the 8444-1019 as the 100 VAC, 5 A version of the UMT 1/A6 package, with a 24 VDC auxiliary supply. The unit includes a two-line LCD for displaying measured values and is suited to generator monitoring, load control, synchronization systems, and legacy power-generation installations.

Technical Specifications — 8444-1019

Woodward’s official UMT 1 manual confirms true-RMS measurement, configurable analog outputs, LCD indication, and the available 1 A/5 A current-transformer and 100/400 VAC voltage-input configurations.

Woodward 8444-1019

Key Features and Benefits — 8444-1019

• Six configurable analog measurement outputs.
• 100 VAC voltage-transformer input.
• 5 A CT secondary input.
• True-RMS measurement for three-phase electrical systems.
• kWh and kVARh pulse-output capability.
• 24 VDC auxiliary power.
• Integrated LCD for local measurement display.
• Suitable for generator and power-distribution monitoring.
• Compatible with higher-level control systems through analog outputs.

The 5 A CT configuration is particularly important when selecting a replacement. Woodward also produced visually similar UMT 1 units for 1 A CT inputs and different voltage ranges, so matching only the UMT 1 family is not sufficient.

Related Models

8444-1002: UMT 1/A3 version with three analog outputs for 100 VAC and 5 A input.

8444-1057: UMT 1/A6 version configured for 400 VAC and 5 A input.

8444-1022: UMT 1/A3 version for 100 VAC and 1 A input with RS-485 Modbus communication.

LR21296: UMT 1/A6 version for 100 VAC and 1 A input.

Installation and Maintenance — 8444-1019

Before installation, verify the voltage-transformer ratio, 5 A CT secondary rating, auxiliary 24 VDC supply, analog-output configuration, and pulse-output wiring. Record existing scaling and parameter settings before removing the transducer.

During maintenance, inspect the CT and VT wiring, terminal connections, analog-output circuits, auxiliary power, and display operation. Never open-circuit an energized current-transformer secondary. After replacement, verify voltage, current, power, and energy readings against a calibrated reference.

Personally, I would confirm the 100 VAC / 5 A input configuration from the nameplate before approving a replacement. That detail distinguishes this unit from several closely related UMT 1 variants.

Product Warranty — 8444-1019

Warranty coverage should be confirmed according to the supplied condition, such as new surplus, refurbished, repaired, or tested-used. For critical generator-control spares, procurement records should include the complete part number, revision, input configuration, inspection status, serial number where available, and warranty period.

Woodward’s product-history service can be used to verify product information using the equipment label and part number.

When sourcing the Woodward 8444-1019, verify the UMT 1/A6 configuration, 100 VAC voltage input, 5 A current input, six analog outputs, and 24 VDC auxiliary supply before purchase.