In order to meet the needs of rapid measurement of transformer DC resistance, our company has recently developed a revolutionary product, the Handheld Three-Channel DC Resistance Tester. This instrument adopts brand-new technology and features high efficiency, small size (single-hand operation), light weight, and large output current. The whole machine is controlled by an ARM processor, automatically completing functions such as self-check, data processing, and display, and also has functions such as automatic discharge, automatic demagnetization, and charge/discharge indication.
This instrument has high measurement accuracy and is easy to operate. It is suitable for test objects such as distribution transformers, instrument transformers, reactors, generators, and motors. It can also be used for rapid measurement of switches, copper bars, contactors, relay contacts, metal wires, cable accessories, and other test objects, with the characteristics of fast speed and stable data.
Handheld Three-Channel DC Resistance Tester Product Features
Highlighted Advantages
A revolutionary product representing a major breakthrough in DC resistance testing technology. It is the first handheld multi-channel DC resistance tester launched domestically, lightweight yet powerful and easy to carry.
The concept of one-time wiring eliminates the need to reconnect and disconnect test leads, saving more time and eliminating or reducing a large number of safety hazards.
Built-in super-large capacity lithium battery, capable of continuous operation for more than 10 hours under typical working conditions (typical working conditions refer to the measured resistance less than 100mΩ, 2A current gear, and fully charged battery).
The test procedure is simple and efficient, with 5 test modes to choose from. The instrument automatically measures the resistance of the selected high-voltage side or low-voltage side windings, including three-phase winding measurement on high and low voltage sides, or single winding measurement.
Automatically selects the test current, with a maximum current of up to 2A.
Effective reading up to 50,000 counts, display range of 0-49999, which is more than 2.5 times that of similar products from other manufacturers (other manufacturers' products have effective readings of only 20,000 counts or even 10,000 counts, i.e., the maximum display is only 19999 or even 9999).
Wide measurement range (0.1μΩ-20KΩ), suitable for test objects such as distribution transformers, instrument transformers, reactors, generators, and motors, and can also be used for measuring switches, copper bars, contactors, relay contacts, metal wires, cable accessories, and other test objects.
The menu is simple and user-friendly, with clear and readable data display, clearly visible even under sunlight.
The instrument has a calendar and data storage of up to 10,000 groups, and data is not lost when powered off.
Simple and convenient USB storage for storing and transferring test results for review and editing.
The synchronous winding magnetization technology can perform accurate and rapid DC resistance testing on large inductive loads. Whether it is a star connection or delta connection winding, one-time wiring can complete three-phase resistance measurement and automatically calculate the three-phase unbalance rate, greatly saving measurement time and improving work efficiency.
Built-in automatic demagnetization function after testing, with audible discharge alarm and clear discharge indication, reducing misoperation.
If the test leads are accidentally disconnected or the power supply is interrupted, the built-in complete discharge circuit and back-EMF protection circuit provide strong arc resistance capability.
