DC Resistance Rapid Tester Performance Characteristics
High testing speed: This instrument has a maximum output charging current of up to 2A. During measurement, it can effectively compensate for the current inertia of large inductor equipment, accelerate the saturation of the iron core, thereby shortening the charging time and improving the testing speed. It is hundreds of times faster than traditional single and double arm bridge instruments.
High accuracy: In addition to employing an advanced four-terminal measurement method, this instrument also utilizes advanced constant current power supply technology, ensuring that the charging current for inductive loads remains relatively stable. This results in stable anti-inductive capability, strong anti-interference ability, and thus guaranteed measurement accuracy. Furthermore, it uses high-quality imported components, ensuring high accuracy and good repeatability of measurement results.
Wide measurement range: The resistance measurement range is 1μΩ～2KΩ, which is a wide range.
AC/DC dual-use: This instrument has a built-in rechargeable battery pack, supports both AC and DC power, and is portable, making it easy to use and carry.
Overview of DC Resistance Rapid Tester
The DC resistance test of transformer windings is an essential test item after transformer handover, major overhaul, and tap changer replacement. By measuring the DC resistance of the transformer windings, the quality of lead welding or connection can be checked, whether there are inter-turn short circuits or open circuits in the windings, and whether the tap changer contacts are good.
The DC resistance rapid tester is a high-precision replacement for single-arm and double-arm DC bridges. Utilizing advanced switching power supply technology, its measurement speed is over 100 times faster than that of a bridge. The display section features a 4.5-digit LCD showing the measurement results and a 3.5-digit LCD showing the ambient temperature or test current value, overcoming the drawback of other similar products where LED displays are inconvenient to read in sunlight. It also features automatic arc suppression. This instrument boasts advantages such as fast measurement speed, high accuracy, intuitive display, strong anti-interference capability, small size, low power consumption, stable and reliable test data, and immunity to human error. The instrument is equipped with a built-in 12V rechargeable battery pack, supporting both AC and DC power, facilitating on-site and field testing.
This product complies with the requirements of DLT845.3-2004 "General Technical Conditions for Resistance Measuring Devices - Part 3: DC Resistance Tester".
