Transformer Winding DC Resistance Testers
Our Transformer Winding DC Resistance Testers are designed to measure the winding resistance of transformers accurately and efficiently. These testers help identify issues such as loose connections, broken strands, and other manufacturing defects, ensuring the reliability and safety of transformer operation.
lizhvtesttech@gmail.com
+1 323 522 4623
Key Features:
- High Accuracy: Equipped with advanced measurement technology, our testers provide precise and reliable DC resistance measurements.
- Rapid Testing: Fast measurement speeds reduce testing time, increasing efficiency and productivity during transformer maintenance and production.
- User-Friendly Interface: The intuitive interface with a large display and easy-to-navigate controls simplifies the testing process.
- Portable Design: Compact and lightweight, our resistance testers are ideal for field use, offering convenience for on-site diagnostics.
- Robust Safety Features: Built-in safety mechanisms such as overcurrent protection, automatic shutdown, and robust connectors ensure safe operation.
- Battery Powered: High-capacity rechargeable batteries allow for continuous testing without the need for an external power source.
Applications:
- Power Transformers: Measuring the winding resistance to ensure the integrity and performance of power transformers.
- Distribution Transformers: Testing the winding resistance in distribution transformers to verify their operational reliability.
- Instrument Transformers: Assessing the winding resistance in instrument transformers to maintain accuracy.
- Special Transformers: Suitable for testing special-purpose transformers such as rectifier transformers, furnace transformers, and more.
Product Range:
- Portable Winding Resistance Testers:
- Designed for on-site testing with a compact and portable form factor.
- Ideal for quick diagnostics and field maintenance tasks.
- Laboratory Winding Resistance Testers:
- Suitable for detailed analysis in laboratory settings.
- Offers comprehensive testing capabilities for thorough quality assessment.
- Automated Winding Resistance Testers:
- Features automated testing procedures to enhance efficiency and accuracy.
- Perfect for high-volume testing environments where precision is crucial.
- Custom Solutions:
- Tailored winding resistance testers to meet specific customer requirements and testing scenarios.
Technical Specifications:
| Model | 10A | 20A | 40A | 50A |
|---|---|---|---|---|
| Test Channel | 1 | 1 | 1 | 1 |
| Output Current | <5mA, 40mA, 200mA, 1A, 5A, 10A | <5mA, 1A, 2.5A, 5A, 10A, 20A | <5mA, 2.5A, 5A, 10A, 20A, 40A | <5mA, 2.5A, 5A, 10A, 20A, 50A |
| Range | 0.5mΩ~0.8Ω (10A) 1mΩ~2Ω (5A) 5mΩ~10Ω (1A) 100mΩ~500Ω (200mA) 1Ω~250Ω (40mA) 100Ω~100kΩ (<20mA) | 100μΩ~1Ω (20A) 500μΩ~2Ω (10A) 1mΩ~4Ω (5A) 2mΩ~8Ω (2.5A) 5mΩ~20Ω (1A) 10Ω~20kΩ (<5mA) | 50μΩ~500mΩ (40A) 100μΩ~1Ω (20A) 500μΩ~2Ω (10A) 1mΩ~4Ω (5A) 2mΩ~8Ω (2.5A) 10Ω~20kΩ (<5mA) | 50μΩ~400mΩ (50A) 100μΩ~1Ω (20A) 500μΩ~2Ω (10A) 1mΩ~4Ω (5A) 2mΩ~8Ω (2.5A) 100Ω~20kΩ (<5mA) |
| Dimension (mm) | 365 × 285 × 175 | 410 × 250 × 380 | 410 × 250 × 380 | 410 × 250 × 380 |
| Weight | 5.5kg | 14.6kg | 15.5kg | 15.5kg |
| PC Software | No | No | No | No |
| USB Data Export | Yes | Yes | Yes | Yes |
| Mobile Phone Bluetooth | Yes | No | No | No |
| Resolution | 0.1μΩ | |||
| Accuracy | ±(0.2% + 2 readings) | |||
| Operating Temperature | 0℃~40℃ | |||
| Ambient Humidity | ≤90% RH (non-condensed) | |||
We offer both single-phase and three-phase transformer DC resistance testers. The above information pertains to single-phase DC resistance testers. If you require details on three-phase DC resistance testers, please contact us to receive the relevant datasheet.
How to Choose Winding DC Resistance Testers?
Current Ratings and Their Applications
| Test Current | Recommended Applications |
|---|---|
| 10A | Small distribution transformers, high-resistance windings. |
| 20A | Medium transformers, moderately high resistance. |
| 30A | Medium to large power transformers, lower resistance windings. |
| 40A | Large power transformers, reactors with very low resistance. |
| 50A | Extra-large power transformers and reactors requiring high precision. |
| 60A | Ultra-large power transformers with extremely low resistance windings. |
Advantages and Limitations of single-Phase and three-Phase
| Feature | Single-Phase Tester | Three-Phase Tester |
|---|---|---|
| Speed | Slower, requires sequential measurements for each phase. | Faster, measures all three phases simultaneously. |
| Efficiency | Manual reconfiguration increases testing time. | Fully automated, no need for reconfiguration. |
| Portability | Compact and lightweight, ideal for field testing. | Larger and heavier, more suitable for lab or industrial use. |
| Accuracy | High accuracy but may require manual comparison between phases. | High accuracy with built-in phase imbalance detection. |
| Cost | More affordable for small-scale testing. | Higher cost due to advanced features and faster operation. |
| Best Applications | Single-phase transformers and occasional three-phase testing. | Frequent testing of three-phase transformers and large-scale operations. |
Applications of Single-Phase and Three-Phase Testers
| Application | Single-Phase Tester | Three-Phase Tester |
|---|---|---|
| Single-phase transformers | Ideal for testing single winding transformers. | Not necessary unless versatility is required. |
| Small three-phase transformers | Suitable for sequential testing of each phase. | Faster testing for all phases simultaneously. |
| Large power transformers | Can be used but testing is slower and less efficient. | Highly recommended for faster and efficient testing. |
| Routine maintenance | Compact and portable for field testing. | Useful for facilities with frequent large-scale tests. |
| Factory or commissioning tests | Suitable for occasional use in small-scale applications. | Best for high-volume or critical commissioning tests. |
Why Choose Our Winding DC Resistance Testers?
- High Precision and Reliability: Our testers provide precise and reliable measurements, ensuring high-quality data for effective decision-making.
- Compliance with Standards: Meets international standards such as IEC, ASTM, and IEEE, ensuring standardized and dependable testing results.
- Durable and Robust: Built with high-quality materials for long-lasting performance in various testing environments.
- Comprehensive Support: Our team of experienced engineers offers full technical support, from initial setup to ongoing maintenance and troubleshooting.
- Innovative Technology: Incorporates the latest technological advancements to deliver efficient and accurate testing solutions.
Contact Us:
For more information about our Transformer Winding DC Resistance Testers or to request a quote, please contact us at email: Sale@hvtesttech.com or call us: +1 323 522 4623
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