TDR-S Transformer Turns Ratio & Winding Resistance Tester
• Supports one-time wiring to complete the DC resistance test and ratio test, convenient and efficient operation.
• The DC resistance test function is suitable for Yn-type, Y-type and △ -type winding. Measurements can be completed through the three-phase automatic test mode, and the three-phase imbalance rate can be calculated automatically; the Max. output current is 20A, accurately meeting the testing requirements of the extremely low resistance value of the low-voltage coil of the distribution network transformer.
• The transformer ratio testing function covers three-phase, single-phase, and Z-type transformers, and is able to measure PT/CT ratio and determine polarity, and supports blind testing.
• Equipped with an embedded Linux operating system, the system boasts strong stability and high security.
• It adopts an A7+M4 dual-core architecture to efficiently process measurement data and operation commands, ensuring the real-time performance and accuracy of measurements.
• One-click result printing: Smart printing makes test result output more efficient and convenient.
• Equipped with a 7-inch large touch screen, high display, bringing a comfortable and convenient human-computer interaction experience.
• Built-in high-capacity lithium battery to meet the needs of long-term continuous testing on site.
• Equipped with a variety of wired and wireless communication interfaces, easy to expand the instrument function.•
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DC Resistance Test |
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Output Current |
20A、10A、5A、1A、0. 1A、≤10mA |
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Measurement Range |
20A: 0.5mΩ~ 100mΩ 10A: 1.0mΩ~ 300mΩ 5A: 10mΩ~ 1.0Ω 1A: 200mΩ~ 6.0Ω 0.1A: 2.0Ω~ 60Ω ≤10mA: 30Ω ~ 50kΩ |
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Accuracy |
± (reading * 0.2% + 2 digits) |
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Ratio Test |
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Measurement Range |
0.9~10000 |
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Accuracy |
± (reading * 0.1% + 2 digits)(≤500) ± (reading * 0.2% + 2 digits)(500~3000) ± (reading * 0.3% + 2 digits)(>3000) |
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Resolution |
0.0001(0.9~9.9999) 0.001 (10~99.999) 0.01 (100~999.99) 0.1 (1000~9999.9) 1 (10,000 and above) |
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Conditions of use and shape |
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Power Supply |
Built-in lithium battery,7.8AH |
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Input voltage |
AC 85~264V,47~63Hz |
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Temperature |
-10℃~50℃ |
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Relative Humidity |
≤90%, non-condensing |
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Weight/Dimension |
6.6kg; 317×280 ×205mm |
