GF-1A DC Resistance Tester

GF-1A DC Resistance Tester

Product Overview

With a 24MHz high-speed microcontroller as the core and the use of high-speed A/D converters and programmable current source technology, it has achieved high measurement accuracy, stable data, good repeatability, strong anti-interference ability, and automatic printing. This instrument is small in size, light in weight, and easy to carry, making it a generation product for on-site testing of transformer DC resistance.

Main functions and features

1. Using a high-precision 16 bit A/D converter, the measurement data is stable and has good repeatability.

2. The testing current setting is convenient and fast.

3. Test results can be printed.

4. Adopting backlit Chinese character LCD display, high clarity and easy operation.

GF-1A DC Resistance Tester

Main technical indicators

1. Resistance measurement range: 1 μ Ω~999 Ω, with the smallest display resolution of 1 μ Ω

2. Resistance, voltage, measurement accuracy: 0.2%

3. This machine has three levels (automatic conversion): 1 μ Ω 1 Ω, 1 Ω 100 Ω, 100 Ω 999 Ω

4. The maximum output power of the current source is 100W

5. Working current: AC220V ± 10%

6. Environmental temperature: 10 ℃ -40 ℃

7. Volume: 350 × 230 × 130mm

This instrument also has an automatic magnetic assist function. For the testing of the winding of the iron core five column low-voltage corner connected transformer, the high and low voltage series excitation method is used for testing. The instrument automatically connects the magnetic assist circuit of the winding internally, which can quickly and accurately test the DC resistance of the low-voltage winding.

7. This machine has an audio discharge alarm, clear discharge indication, and reduces misoperation.

8. This machine has an alarm protection function for input misconnection of AC380V power supply, which reduces the damage to the instrument caused by misoperation. The machine also has strong anti arc ability for back electromotive force protection.

9. This machine has the characteristics of wide temperature range, high precision, shock resistance, anti-interference, high stability, and easy portability.

parameter

1. Output current: 0-20A (automatically selected according to the range)

2. Range: 0-50 Ω

3. Accuracy: 0.2% ± 0.2 μ Ω

4. Zui small resolution: 0.1 μ Ω

5. Output voltage: DC12V

6. Working temperature: -20~40 ℃

7. Environmental humidity: ≤ 80% RH, no condensation

8. Working power supply: AC 220V ± 10%, 50Hz ± 1Hz

9. Volume: 420mm in length, 320mm in width, and 200mm in height

10. Net weight: 10.6kg