Operation method of transformer DC resistance tester

Zc-205a transformer DC resistance tester is a new generation instrument developed by our company in order to meet the needs of fast measurement of transformer DC resistance by using new power technology. In order to facilitate your use, this paper specially teaches you the test and operation methods of zc-205a transformer DC resistance tester.

 

 

1. Wiring: connect the tested object with the test terminal of the machine through the special cable, connect firmly, and connect the ground wire at the same time.

 

Single channel direct measurement wiring. See Figure two.

 

Figure two

 

 

 

2. Range selection: turn on the power switch, and the display screen will display as shown in Figure 3. At this time, you can select the resistance range of the tested object through the selection / test key. Each time you press the selection key, each range will scroll on the display screen, 10a, 5A, 1a, 100mA, < 4 mA.

 

Figure 3 power on main menu

 

 

 

3. Speed selection: when the “speed” menu is selected, press the selection key to select the “fast” and “slow” speeds. The instrument defaults to the “fast” mode. When measuring the low-voltage side of large capacity transformer and other data is unstable, it is recommended to use the slow mode to measure to enhance stability.

 

4. Test: after selecting the menu content, under the “test” menu, press the test key to start the test. The display indicates the charging current value and prompts “please wait while charging”. When the current is stable, the display shows the used test current and prompts “please wait while testing”. At the same time, the word “test” starts flashing, and then the current value and resistance value are displayed Press the test key to re measure, but the current remains unchanged.

 

During the test, when the selected current is too small, it will prompt “please change the large current”. Because the resistance is too small, the instrument cannot meet the requirements. At this time, the large current should be replaced for retest.

 

When the selected current is too large during the test, it will prompt “please replace the small current”, because the resistance is too large, the measuring current of the instrument can not be filled, at this time, the small current should be replaced for retesting.

 

5. After the test, press the “reset” key, the power supply of the instrument will be disconnected from the winding, discharge at the same time, and sound alarm. At this time, the display screen will return to the initial state. After the discharge sound is finished, the wire can be rewired for the next measurement or remove the test line and power line to finish the measurement.

 

The basic operation method of zc-205a transformer DC resistance tester is as mentioned above. If you have something you don’t understand or need more detailed understanding, please contact our online customer service at any time and serve you at any time.