This instrument can complete single-phase measurement, three-channel simultaneous measurement, three-phase sequential testing, automatic magnetizing method testing, temperature conversion function, equipped with data interface, one-time wiring, no need to reverse or disconnect wires during testing
Technical Specifications
Performance Features 1. This instrument automatically selects the output current (maximum output up to 20A).
2. Wide measurement range (0Ω-50Ω), capable of measuring inductive DC resistance of transformers, mutual inductors, etc.
3. The display adopts a 480*272 dot matrix 65K color large screen, with clear and readable data display.
4. This instrument has functions such as perpetual calendar, 100 sets of data storage, automatic temperature conversion, etc., and data is not lost when powered off. This device is also equipped with a printer to output and print test data, and a "USB drive" interface for easy data export for review and editing.
5. This instrument is equipped with an RS485 communication interface, which, together with the host computer control software, enables remote control measurement.
6. This instrument has a three-phase simultaneous measurement function to handle star-connected windings with one-time wiring to complete three-phase DC resistance measurement, automatically calculate the three-phase unbalance rate, greatly saving measurement time and improving work efficiency. It can also adopt the phase-by-phase testing function to test transformers with YN, D (Y) connections phase by phase, and after the test, automatically calculate the three-phase unbalance rate.
This instrument also has an automatic magnetizing function. For testing the windings of five-limb core low-voltage delta-connected transformers, it uses the method of high-low voltage series excitation for testing. The instrument automatically connects the magnetizing circuit of the windings internally, enabling fast and accurate testing of the DC resistance of the low-voltage windings.
7. This device has an audible discharge alarm, with clear discharge indication, reducing misoperation.
8. This device has protection against accidental connection to AC380V power supply with alarm and protection function, reducing damage to the instrument from misoperation. This device also has perfect back-EMF protection and strong arc resistance.
9. This device has the characteristics of wide applicable temperature, high precision, shock resistance, anti-interference, high stability, and portability.
Note: The above information and technical parameters are compiled and released by Yangzhou Darui Electric Co., Ltd.