Dual Canopy Mechanic Electrical Engineering Co., Ltd. is one of the leading manufacturers and suppliers of single phase dc resistance meter in China. Please feel free to wholesale discount products for sale here and get quotation from our factory. Customized orders are welcome.
What is the name of this DC resistance tester?
Known in English as the Transformer Winding Resistance Test Machine, this is a series of testers from Dual Canopy designed for measuring the DC resistance of transformer windings, available in models with current ratings of 20A, 40A, 50A, and 60A.
Designed for the rapid DC resistance measurement of large and medium-sized transformers, the system features multiple current settings and a wide measurement range to suit various scenarios, including factory testing, installation, major overhauls, and preventive maintenance.
Current setting and range?
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Output Current |
20A: ＜20mA, 1A, 2.5A, 5A, 10A, 20A 40A: ＜20mA, 2.5A, 5A, 10A, 20A, 40A 50A: ＜20mA, 2.5A, 5A, 10A, 20A, 50A 60A: ＜20mA, 5A, 10A, 20A, 40A, 60A |
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Measurement accuracy |
0.2%+2 10Ω~20KΩ(＜20ma) 0.5%+2 |
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Minimum resolution |
0.1μΩ |
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Taking the 50A model as an example, output current options include <20mA, 2.5A, 5A, 10A, 20A, and 50A; the measurement range is approximately 40μΩ–20kΩ, with a minimum resolution of 0.1μΩ.
What is its most outstanding experiential advantage?
Features a 7-inch high-brightness color LCD touchscreen that remains clearly visible even in strong light; supports full touch operation and seamless switching between Chinese and English. The unit is compact and lightweight, offering high output current, excellent repeatability, and strong interference resistance.
Equipped with a built-in perpetual calendar and power-loss memory, it can store hundreds of test data records for easy retrieval and traceability.
What are the main ports on the panel?
It is equipped with an AC 220V power switch, a grounding terminal, current output terminals (I+/I-), voltage sensing terminals (V+/V-), an RS232 serial port, and a USB port; a built-in micro-printer allows for the direct printing of test results in Chinese.
I+/I- serve as the current output terminals (positive/negative), and V+/V- serve as the voltage sensing terminals (positive/negative); during testing, reliable connections using the four-wire method and proper grounding are required.
What kind of settings is it suitable for?
Suitable for on-site factory acceptance, handover, and preventive testing at transformer manufacturing plants, power supply companies, maintenance centers, and third-party testing agencies.
Designed for the rapid DC resistance measurement of large and medium-sized transformers; features multiple current settings and a wide measurement range to accommodate various scenarios, including factory testing, installation, major overhauls, and preventive maintenance.
The overall strength of the manufacturer?
Dual Canopy (Hebei Dual Canopy Electromechanical Engineering Co., Ltd.) is a specialized manufacturer of power testing equipment. Its product portfolio encompasses oil-immersed and dry-type transformers, transformer oil treatment systems, transformer testing units, and high-voltage test equipment, serving sectors such as the power industry, electrified railways, marine, telecommunications, and municipal infrastructure.
The company supports bulk procurement and customized orders, offering configurable current ratings and accessories to meet specific requirements.
Services include factory calibration, operational training, and technical support, with spare parts (including matching fuses) and repair services available upon request.
Our address
Baoding Cloud Center, Hebei, China
Phone Number/whatsapp
+8613603329412
dylan@dualcanopy.com
FAQ
Q: What should I do if the current fails to reach the preset value and the device remains in a "charging" state?
A: This indicates that the selected current exceeds the current measurement range; simply press the Reset button, select a lower current setting, and proceed with the measurement.
Q: What should I do if there is a sudden power outage during measurement?
A: The instrument will automatically begin discharging. Do not disconnect the leads immediately; wait at least 30 seconds before proceeding.
Q: What phase and tap settings are supported?
A: You can cycle through various phase options (such as AB, BC, CA, AO, BO, and CO) and input parameters-including winding temperature, reference temperature, tap position, and winding material-to facilitate temperature-corrected comparisons.
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