Description
Overview
GAOTek earth DC ground fault locator applies to all DC system in any voltage class, equipped with high-precision tester, expanded the tested range, and strengthened the anti-interference ability by processing many kinds of signal. Adopted excellent method of calculation and advanced Fuzzy control calculation theory, show us the advancement of the measured circuit branch by numerical value, which reflect the superiority of artificial intelligence sufficiently. Correctly detect the position of the earthing contact each time. The device with system security as paramount premise, according to the highest industry standards requirements, use dependable low-frequency signals to detect, and do a lot of practical applications in the field, without any impact on the system. The device is used to find the DC system ground exact location of power plants and substations under power-on state. It can quickly find the earthing contact to several types of ground fault; the accuracy rate reaches 100%.
Features
- Automatic calibration
- Automatic sync
- Automatic voltage recording
- 2D and 3D partial discharge pattern display
- Digital window-opening technology
- Dual channel measurement
Technical specifications
| Output signal frequency | 2.5 Hz |
| Signal no -load output | ± 20 V ± 5 % |
| Signal voltage amplitude error | < 5 % |
| Signal short circuit output current | ≤ 80 mA |
| Output terminal shock resistance capability | 400 V DC impulse |
| Supply voltage | AC 220 V ± 10 % |
| Voltage frequency | 50 Hz ± 5 % |
| Input fuse | 200 mA |
| Maximum power | 3 W |
| Maximum measured ground resistance | 300 kΩ |
| Ground resistance measurement accuracy | 0 KΩ to 4.5 KΩ, error ≤ 0.5 KΩ. 4.5 KΩ to 300 KΩ, error ≤ 10 % |
| Dimensions | 11.8 in x 10.6 in x 7.87 in (300 mm x 270 mm x 200 mm) |
| Weight | 6.17 in (2.8 kg) |