TPZC-II DC Resistance Rapid Tester
Darui Electric recommends for you
This product is a high-precision replacement for DC single and double bridge ohmmeters. It adopts advanced switching power supply technology, and its measurement speed is more than a hundred times faster than that of a bridge. The display part uses a four-and-a-half digit LCD to show measurement results, and a three-and-a-half digit LCD to show ambient temperature or test current value, overcoming the disadvantage of other similar products with LED displays that are inconvenient to read in sunlight, while also having automatic arc suppression function. This DC resistance rapid tester has advantages such as fast measurement speed, high precision, intuitive display, strong anti-interference capability, small size, low power consumption, stable and reliable test data, and is not affected by human factors. The instrument is equipped with a rechargeable battery pack (12V), supports both AC and DC power, making it convenient for field and outdoor testing.
The DC resistance rapid tester produced by our company complies with the requirements of DLT 845.3-2004 "General Technical Conditions for Resistance Measuring Devices - Part 3: DC Resistance Testers". The DC resistance test of transformer windings is an essential test item after transformer handover, major repair, or tap changer adjustment. By measuring the DC resistance of transformer windings, it is possible to check the quality of lead welding or connections, whether there are inter-turn short circuits or open circuits in the windings, and whether the tap changer contacts are in good condition. In the past, the measurement of DC resistance was carried out using QJ44 double bridge ohmmeters, but the measurement current of such bridges is in the milliampere level, requiring a long time for measurement and having relatively low accuracy. To change this situation, shorten measurement time, and reduce the workload of test personnel, our company has developed the TPZC-2A DC resistance rapid tester.
1. Fast test speed: The
DC resistance rapid tester has a maximum output charging current of up to 2A, which can effectively compensate for the current inertia of large inductive equipment during measurement,
accelerating core saturation, thereby shortening charging time and improving test speed, which is several hundred times faster than traditional single and double bridge instruments.
2. High accuracy: In addition to adopting the advanced four-terminal measurement method, this instrument also uses advanced constant current power supply technology, which keeps the charging current for inductive loads at a relatively stable value, ensuring stable inductance resistance capability and strong anti-interference ability, thereby ensuring measurement accuracy. Moreover, it uses high-quality imported components, resulting in high measurement accuracy and good repeatability.
3. Wide measurement range: The resistance measurement range is 1μΩ to 2KΩ, with a wide range.
4. Dual AC/DC power supply: This product is equipped with a rechargeable battery pack, supports both AC and DC power supply, and has a portable design, making it easy to use and carry.
Note: The above information and technical parameters are compiled and released by Yangzhou Darui Electric Co., Ltd.
