LDZRC-40 Transformer DC Resistance Tester is a professional power testing equipment designed specifically for measuring the DC resistance of large power transformers. This tester adopts advanced testing technology and high-precision sensors, which can quickly and accurately measure the DC resistance of transformers. It is an essential tool for preventive testing and maintenance of transformers in power systems. Equipped with high output current, wide testing range, high precision, and multiple protection functions, it can meet the testing needs of various types of transformers. Meanwhile, its convenient user interface and powerful data storage function make the testing process more efficient and convenient.
| Output Current | 50A/40A model - 50A/40A、20A、10A、5A、1A、0.2A、10mA、<1mA |
| 20A model - 20A、10A、5A、1A、0.2A、10mA、<1mA | |
| Measurement Range | Gear 50A - 75uΩ～0.4Ω; Gear 40A - 0.1mΩ～0.5Ω; Gear 20A - 0.5mΩ～ 1 Ω; Gear 10A - 1.0mΩ～ 2 Ω; Gear 5A - 10 mΩ～ 4 Ω; Gear 1A - 0.1Ω～ 20Ω; Gear 0.2A - 1.0Ω～ 100Ω; Gear 10mA - 50Ω～ 2kΩ; Gear<1mA - 500Ω～ 25kΩ |
| Accuracy | ±(reading×0.2%+2) |
| Power Supply | AC220V±10%, 50/60Hz |
1. The appearance of the product is subject to the actual product. Technical parameters and models are subject to change without prior notice. 2. To learn more about Longdian products, please enter the product center. Service Hotline: 400-6727-238
High output current: The maximum output current of the test power supply can reach 40A, which can meet the high current requirements for DC resistance testing of large power transformers.
Wide testing range: The measurement range covers 0.1m Ω to 25k Ω, suitable for testing requirements of transformers of different specifications and models.
High precision measurement: Using high-precision sensors and advanced testing algorithms, the measurement accuracy is as high as ± (reading x 0.2%+2 words), ensuring the reliability and accuracy of the test results.
Automatic calculation of change rate: During the testing process, the resistance value change rate within 5 seconds, 15 seconds, and 30 seconds can be automatically calculated to help users quickly determine the stability of the test data.
Multiple protection functions: equipped with 380V misconnection protection, back electromotive force protection, wire breakage protection, and power-off protection, ensuring the safety and reliability of the testing process.
Convenient operating interface: Adopting a true color large screen high-resolution LCD display, touch and one click shuttle operation, the interface is simple and clear, and the operation is simple and fast.
Powerful data storage function: The instrument is equipped with a thermal printer, which stores 200 pieces of data locally and supports massive storage on a USB drive, making it convenient for users to manage and analyze data.
Wide application scenarios: Suitable for measuring DC resistance of Yn, Y, and △ winding transformers, widely used in preventive testing and maintenance of transformers in industries such as power, petroleum, chemical, and metallurgy.
