The HZS-20A is a portable single-phase 20A winding resistance tester designed for rapid, accurate measurement of transformer DC resistance. DC resistance testing is a mandatory procedure for semi-finished products, finished products, factory tests, installation, handover tests, and preventive maintenance by power departments. It effectively identifies manufacturing defects such as poor material selection, loose soldering, connection issues, missing strands, broken wires, and operational hazards.
To meet the need for rapid measurement of transformer DC resistance, our company has leveraged its technical advantages to develop this Transformer DC Resistance Tester.
| Parameter | Configuration | Range |
|---|---|---|
| Range | Single-Phase 20A | 0.500 mΩ – 1.000 Ω |
| Single-Phase 10A | 1.000 mΩ – 2.000 Ω | |
| Single-Phase 5A | 10.00 mΩ – 4.000 Ω | |
| Single-Phase 1A | 100.0 mΩ – 20.00 Ω | |
| Single-Phase 0.1A | 1.000 Ω – 200.0 Ω | |
| Range | Three-Phase 10A+10A | 1.000 mΩ – 0.800 Ω |
| Three-Phase 5A+5A | 10.00 mΩ – 1.600 Ω | |
| Three-Phase 1A+1A | 100.0 mΩ – 8.000 Ω | |
| Three-Phase 0.1A+0.1A | 1.000 Ω – 80.00 Ω | |
| Accuracy | ±(Reading × 0.2% + 2 digits) | |
| Resolution | 0.1 μΩ | |
| Power Supply | AC220V ±10%, 50/60Hz | |
| Relative Humidity | <90%, non-condensing | |
| Operating Temperature | -10°C – 50°C | |
| Dimension | 410 × 290 × 220 mm | |
| Weight | 9 kg (excluding test leads) | |
We are an integrated trade and manufacturing company with our own factory.
Yes, we accept OEM/ODM/OBM and can customize the built-in software of the product according to the customer's special requirements.
In normal circumstances, products in stock can be received within 5 to 7 days via the fastest international express. Other situations may vary depending on the quantity of products ordered, whether there are special customization requirements, and the delivery time chosen.
We have professional internal and external packaging to ensure the safety and stability of the products during transportation. For fragile or other special parts, we will include an extra set to ensure that the customer can use the product immediately upon receipt.
For quality issues that are not caused by human error, we provide a one-year warranty from the time the product is delivered, and lifetime technical support. Other after-sales issues will be addressed by our professional technical staff within 24 hours. The product comes with a user manual and an operation video.
