HUAC-2071
Three-Phase Transformer Turns Ratio Tester (TTR), Battery Powered
Battery-powered three-phase TTR tester: ratio, vector group and polarity in about 10 seconds with one connection, ratio 0.9 to 10,000, 3.5 kg.
MODEL HUAC-RZ-II
Winding Deformation Tester: FRA and Short-Circuit Impedance
Combined winding deformation tester using frequency response analysis and low-voltage short-circuit impedance for medium and large power transformers.
- Frequency response and short-circuit impedance in one instrument
- Automatic calculation and diagnosis of winding deformation
- One-button measurement after connection
- Saves environmental conditions with each test for later diagnosis
- Remote software support and upgrades
- Shock-proof transport case
- English user interface; English operating system available
Overview
The HUAC-RZ-II combines two methods for diagnosing transformer windings: frequency response analysis (FRA) and the low-voltage short-circuit impedance method. Using both gives a fuller picture of the winding condition of medium and large power transformers.
Once the input and output signals are connected, a measurement runs with a single button. The software calculates the relevant parameters, diagnoses the degree of winding deformation and gives a reference conclusion. The instrument travels in a shock-proof, moisture-resistant case.
See the full range of transformer test equipment, or send us your transformer data and we will recommend the right instrument.
Technical specifications
| FRA | |
|---|---|
| Sweep range | 1 kHz – 2000 kHz, linear or logarithmic |
| Signal source | Sine wave, max. ±10 V, 50 Ω output |
| Response input | Max. ±25 V, 1 MΩ, auto range |
| Resolution / sampling | 16-bit, 20 MS/s per channel |
| Static error | < 0.2 % |
| Frequency accuracy | ≤ 0.01 % |
| Impedance | |
| Voltage | 15 – 500 V, ±1 % |
| Current | 0.25 – 50 A, ±1 % |
| Impedance | 0 – 100 %, ±1 % |
| Active power | ±0.2 % (0.1 < cos φ ≤ 1); ±0.5 % (0.02 < cos φ ≤ 0.1) |
| Frequency | 45 – 65 Hz, ±0.05 % |
| General | |
| Interface language | English |
Specifications may change without notice. Contact us for the latest datasheet.
Applications
Medium and large power transformersAfter short-circuit faultsCondition assessment
Downloads
The datasheet and user manual for this instrument are sent on request, usually within one business day.
Frequently asked questions
Why combine two methods?
FRA is sensitive to local changes in the winding, while short-circuit impedance reflects the overall leakage reactance. Together they give a more reliable diagnosis.
Which transformers is it for?
Medium and large power transformers.
Does it need a computer?
Yes, the analysis software runs on a Windows computer.
Have another question? Ask our application engineers.
Request a quote
Get pricing for the Winding Deformation Tester: FRA and Short-Circuit Impedance
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