Product Spotlight: DV Power TWR250B
Automated Transformer Turns Ratio and Winding Resistance Tester
Introduction
ProgUSA distributes the DV Power TWR250B transformer tester with full U.S.-based support, training, and service. The TWR250B combines turns ratio measurement and winding resistance analysis in a single, fully automated instrument built for both field and factory applications.
For utilities managing critical transformer assets, this instrument addresses a common challenge: reducing test setup time while maintaining measurement accuracy. The TWR250B brings both capabilities together in one portable package.
About the TWR250B
DV Power developed the TWR250B as a three-phase test analyzer for fast, accurate, and fully automated power transformer testing.
The instrument enables single-step three-phase connection to all transformer windings, reducing setup time during on-site testing. Turns ratio testing reaches up to 250 V AC, while winding resistance testing delivers up to 25 A DC. Both functions produce precise and repeatable measurement results.
A 10.1-inch graphical touchscreen allows intuitive operation in the field. Automated tests, demagnetization, and vector group detection are performed directly from the display. The built-in battery ensures reliable testing even at locations without external power supply.
Key Capabilities
The TWR250B supports essential transformer diagnostic functions including turns ratio measurement per IEC 60076-1, winding resistance measurement, automatic tap changer position detection, excitation current measurement, phase angle measurement, and transformer vector group detection. A built-in demagnetization function prepares transformers for accurate testing. The TWR250B includes a built-in thermal printer. Field crews can print test results directly from the instrument immediately after testing or retrieve any previously saved result for on-site documentation. No laptop required.
Applications
Utilities and service providers use the TWR250B for power transformer commissioning, routine maintenance testing, post-repair verification, tap changer functionality assessment, factory acceptance testing, and field troubleshooting.
Utility Benefits
Modern transformer test equipment improves maintenance efficiency in several ways.
Reduced Testing Time
Automated three-phase testing minimizes setup and measurement duration. During limited outage windows, faster testing means more work completed per maintenance cycle.
Improved Accuracy
Eliminating manual connection changes reduces human error. Consistent, repeatable measurements provide reliable baseline data for asset condition tracking.
Simplified Operations
Intuitive touchscreen interfaces reduce training requirements. Field crews can perform consistent testing procedures without extensive preparation.
Better Asset Decisions
Accurate turns ratio and winding resistance data support repair versus replacement decisions. Trending results over time helps identify developing issues before they become failures.
ProgUSA Support
ProgUSA provides full support for the TWR250B and the complete DV Power transformer test equipment line.
Technical Consultation
Our team helps utilities select appropriate test equipment for specific transformer types and testing requirements. We match instrument capabilities to program needs.
Training and Demonstrations
ProgUSA offers product training and on-site demonstrations to help crews operate equipment effectively from day one.
U.S.-Based Service
Our Florida service center coordinates calibration and repair for DV Power instruments. Domestic service means faster turnaround and direct communication with technicians.
Ongoing Technical Support
Questions about test procedures, result interpretation, or equipment operation are handled by our applications team. Support continues throughout the equipment lifecycle.
DV-TR Software Included
The TWR250B includes DV-TR PC software at no additional cost. The software downloads test results from the instrument for further analysis, generates customized test reports, and exports data directly to Excel. All software updates are provided free of charge throughout the life of the instrument.
Learn More
The TWR250B is available through ProgUSA with full technical support, training, and service coordination.
Contact us for product specifications, demonstration scheduling, or application guidance.
ProgUSA | www.progusa.net | info@progusa.net | +1 407 332 8678