HZ-3310B 10A Three Phase Transformer Winding DC Resistance Tester
HZ-3310B 10A Three Phase Transformer Winding DC Resistance Tester
HZ-3310B 3-phase winding resistance measuring instrument.To meet the requirements for rapid measurement of transformer DC resistance, our company has developed a large‑scale power transformer DC resistance rapid tester that integrates three‑phase simultaneous test function, magnetic augmentation function, and degaussing function into a single unit.
The tester features three‑phase simultaneous power‑on, independent current and voltage sampling, simultaneous measurement and display of three‑phase resistance values, and automatic calculation of the three‑phase unbalance rate. These capabilities significantly shorten the test period for transformer DC resistance and resolve the long‑standing issue of time‑consuming DC resistance measurement for each tap winding in power transformers.
Tech Data
| Parameter | Test Type | Configuration / Current Range | Corresponding Measurement Range |
|---|---|---|---|
| Output Current | Three-phase | 5A + 5A | - |
| 1A + 1A | - | ||
| 200mA + 200mA | - | ||
| 20mA + 20mA | - | ||
| Single-phase | 10A | - | |
| 5A | - | ||
| 1A | - | ||
| 200mA | - | ||
| 20mA | - | ||
| Measurement Range | Three-phase | 5A + 5A | 2 mΩ ～ 1.2 Ω |
| 1A + 1A | 10 mΩ ～ 6 Ω | ||
| 200mA + 200mA | 100 mΩ ～ 30 Ω | ||
| 20mA + 20mA | 10 Ω ～ 200 Ω | ||
| Single-phase | 10A | 1 mΩ ～ 2 Ω | |
| 5A | 2 mΩ ～ 4 Ω | ||
| 1A | 10 mΩ ～ 20 Ω | ||
| 200mA | 100 mΩ ～ 100 Ω | ||
| 20mA | 10 Ω ～ 20 kΩ | ||
| Accuracy | Both (Three-phase / Single-phase) | - | ±(0.2% + 2 digits) |
| Minimum Resolution | Both (Three-phase / Single-phase) | - | 0.1 μΩ |
Notes
Before reversing the tap connections in the test of no-load voltage regulating transformers, be sure to reset the tester, wait till the end of the discharge process and the alarm stops. Before removing the wires, be sure to wait till the discharge process completes and the discharge alarm stops.
When the three channels are used, because the initial establishment of the magnetic circuit may take longer when testing the first set of data, the stabilization time can be shortened when the tap connections are reversed.
List of Complete Accessories
|
Name |
Quantity |
|
Transformer dc resistance tester host |
1 unit |
|
Dedicated test wires |
1 set |
|
Standard resistance |
1 unit |
|
Printing paper |
2 rolls |
|
Fuse |
2 units |
|
Grounding wire |
1 unit |
|
Power wire |
1 unit |
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