Product overview
The instrument applies to power industry, post and telecommunications, railway, communications, mining and other sectors to measure the grounding resistance of the various devices and the conductor resistance of low resistance; this instrument can also measure soil resistivity and ground voltage.
The instrument is a newly developed earth resistance tester, which abandons the traditional way of generating electricity by hand operation, uses advanced middle-large scale integrated circuits and applies DC/AC transformation technology to combine three-terminal measurement method and four-terminal measurement method into one model.
Products features
High-strength aluminum alloy shell body, the circuit equipped with phase locked loop and switched capacitor filter, based on which the instrument play an effective role in shielding power frequency and radio frequency interference.
DC/AC converter can transform DC current into AC low-frequency constant current for the measurement.
Auxiliary grounding resistance can change in the range of 0 ~ 1.8KΩ (RC), 0 ~ 40KΩ (RP), that will not affect measurement results.
Without manual adjustment to zero, with three and a half bits LCD display, the instrument can be used for measuring the grounding resistance, the conductor resistance of low resistance, soil resistivity and AC ground voltage. If tested loop encounter failure, the screen displays "1" indicating large range, which consistent with conventional measurement practices.
Technique parameters
| Operating Conditions |
Temperature |
0ºC~+45ºC |
| Relative humidity |
≤85%RH |
| Measuring range and constant current value (virtual value) |
resistance |
0~20Ω(10mA), 20~200Ω(10mA), 20~2000Ω(1mA) |
| voltage |
AC0~19.99V |
| Measurement accuracy and resolution |
accuracy |
0~0.2Ω≤±3%±1d |
| 0.2Ω~199.9Ω≤±1.5%±1d |
| 1~19.99V≤±3%±1d |
| resolution |
0.01Ω, 0.1Ω, 1Ω, 0.01V |
Measurement errors caused by auxiliary grounding resistance and ground voltage
|
Auxiliary grounding resistance
|
RC (between C1 and C2) |
| 0~20Ω≤1KΩ |
| 20~2000Ω≤2KΩ |
| RP (between P1 and P2) <40KΩ error ≤ ± 5%) |
| Ground voltage (frequency virtual value) |
≤ 5V error ≤ ± 5% |
| Power supply and power dissipation |
Maximum power dissipation |
≤2W |
| DC |
8×1.5V(AA,R6) battery |
| AC |
220V/50Hz |
| Dimensions and weight |
Dimension |
220×200×105mm3 |
| Weight |
≤1.4kg |
FAQ
1. Is your company a sales company or a manufacturer?
Wuhan UHV Power Technology Co.,Ltd. is an industrial and trade enterprise, with its own factory, self-produced and self-sold. We were founded in 2004 and have fifteen years of production experience. Our company has reliable production lines, test rooms and R&D centers.
2. Whether the goods are in stock, whether they can be customized, and how long the delivery time is.
After the goods have been ordered, it takes about 7 working days for production if there are no accidents.
3. Is the quality guaranteed?
In order to ensure quality, we use imported components in large quantities. After three times of quality inspection, the goods can be sent out, and the export is uniformly packed in non-fumigation wooden boxes.
4. What are the after-sales terms?
We offer free consulting service, one year warranty, and adopt various methods such as email communication, video calls, technology door-to-door, aiming to solve any after-sales problems in a timely manner.
5. What are the cooperative countries or regions?
Products have been successfully exported to the United States, Brazil, Australia, Russia, the Netherlands, Indonesia, Bangladesh, Iran, India, Saudi Arabia, Mongolia, Japan and other countries and regions. In the United States, India, Vietnam and other regions have cooperative distributors, can provide thoughtful services.
Contact us
Wuhan UHV Power Technology Co.,Ltd.
Address:Building 6, Optics Valley Optical-Mechanical Industrial Park, No.83, Gaoxin 5th Road,
East Lake High-tech Zone, Wuhan city .China 430223
){kind=link}