Working Principle:
The Three-Channel DC Resistance Tester adopts the typical four-wire measurement method. In order to improve the accuracy of measuring resistance (especially low resistance). The programmable constant current source, programmable preamplifier, and A/D converter constitute the main body of the measurement circuit. The central control unit applies a constant, high-precision current to the external load under test by controlling the constant current source, and then processes the obtained data (including test voltage, current test current, etc.) to obtain the actual resistance value.
This instrument can store 255 test data, and can print all stored test data. The stored data will not be lost when the instrument is reset or powered off.
Technical Specifications:
1. Current ranges
Single channel: 1A, 5A, 10A, 30A
Three channels: 1A, 5A, 10A
Three channels continuous: 1A, 5A, 10A
4. Dimensions: 430×270×330mm
6. Ambient temperature: -20℃~+45℃
7. Ambient humidity: ≤80%
8. Working power supply: AC220V±10%
9. Power: <100W
Product Features:
l When testing windings with a neutral point lead in a star connection, the instrument can adopt a three-phase simultaneous measurement method to test the DC resistance of phases A0, B0, and C0, greatly saving test time;
l Displays and prints all test data of the transformer's high, medium, and low voltage windings, and automatically calculates the three-phase unbalance rate;
l Has complete back-EMF protection function;
l Has automatic discharge and discharge indication functions, reducing misoperation and ensuring the safety of equipment and personnel;
l The instrument can store up to 500 sets of test data, and can also use a USB flash drive to store data;
l The instrument adopts a 5.7-inch large LCD display, and can print test results at any time;
l The instrument has the characteristics of wide applicable temperature, high precision, shock resistance, anti-interference, and easy portability.
l Fast test speed, high accuracy, good data repeatability, and strong anti-interference capability
Note: The above information and technical parameters are compiled and released by Yangzhou Dary Electric Co., Ltd.
