Product introduction
The UHV-2571B is a professional soil resistivity tester and ground resistance meter designed for soil resistivity, grounding resistance, low resistance, and AC grounding voltage testing. It uses a four-wire measurement method and interference suppression technology for reliable field testing in substations, grounding grids, transmission and distribution systems, communication base stations, and industrial facilities.
Product functions
Ground resistance testing: Accurately measures the ground resistance of grounding electrodes and grounding systems to determine whether grounding performance meets requirements.
Soil resistivity testing: Uses the four-wire method to measure soil resistivity, providing data basis for grounding grid design and grounding engineering construction.
Low resistance testing: Measures the resistance of grounding conductors, metal conductors, and connection points to check whether connections are reliable.
AC grounding voltage testing: Detects the AC voltage of the on-site grounding system, assisting in evaluating the grounding environment and interference conditions.
Anti-interference testing: Features power frequency and radio frequency interference suppression capability, suitable for complex on-site environments such as substations, distribution rooms, and grounding grids.
Four-wire precision measurement: Reduces the influence of test leads and contact resistance on measurement results, improving the accuracy of ground resistance and soil resistivity testing.
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Features
1 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.
2 DC/AC converter can transform DC current into AC low-frequency constant current for the measurement.
3 Auxiliary grounding resistance can change in the range of 0 ~ 2KΩ (RC), 0 ~ 40KΩ (RP), that will not affect measurement results.
4 Without manual adjustment to zero, with three and a half bits LED 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.
15. Intelligent prompt of battery undervoltage to ensure test accuracy.
16. Small size and light weight.
Technical parameters
| Working Conditions | Ambient temperature | 0℃～+45℃ |
| Relative humidity | ≤85%RH | |
Measurement range and constant current value (effective value) | Resistance | 0～20Ω(10mA)，2～200Ω(1mA)，20～2000Ω(0.1mA) |
| Voltage | AC0～19.99V | |
| Measurement accuracy and resolution | Precision rowspan | 0～0.2Ω≤±3%±1d |
| 0.2Ω～1999.9Ω≤±1.5%±1d | ||
| 1～19.99V≤±3%±1d | ||
| Resolution | 0.01Ω、0.1Ω、1Ω、0.01V | |
Measurement error caused by auxiliary grounding resistance and ground voltage | Allow auxiliary grounding resistance | RC(between C1 and C2) |
| 0～20Ω≤1kΩ | ||
| 20～2000Ω≤2kΩ | ||
| RP(between P1 and P2) < 40kΩ， Error≤±5% | ||
Allowable ground voltage (effective value of power frequency) | ≤5V， Error≤±5% | |
| Power and power consumption | Maximum power loss | ≤2W |
| DC | 8 × 1.5V (AA, R6) battery | |
| AC | 220V/50Hz | |
| volume and weight | Dimensions | 220×200×105mm3 |
| Weight | ≤1.4kg |
Nickname: Soil Resistivity Tester; soil resistivity meter
Application Scenarios
Substations: Testing the performance of substation grounding grids and grounding systems.
Transmission and distribution lines: Testing the grounding resistance of transmission towers and distribution equipment.
Power equipment grounding: Testing the grounding condition of transformers, switchgear, and other equipment.
Building grounding systems: Testing lightning protection grounding, protective grounding, and other building grounding systems.
Communication base stations: Testing the grounding resistance and grounding system performance of communication base stations.
Grounding grid construction and acceptance: Measuring soil resistivity to provide a basis for grounding grid design, construction, and acceptance.
Lightning protection grounding testing: Testing lightning rods, surge arresters, and lightning protection grounding devices.
Industrial sites: Testing the grounding condition of factory equipment, distribution systems, and large machinery.
Grounding system maintenance: Used for periodic inspections to identify abnormal ground resistance or grounding connection issues.
Frequently Asked Questions
Q: Why is it necessary to measure soil resistivity before grounding grid design?
A: Soil resistivity is important basic data for grounding grid design, helping to determine the arrangement of grounding electrodes and the grounding scheme.
Q: Can it be used for newly built grounding systems?
A: Yes. It can be used for soil resistivity testing before construction, during construction inspection, and for ground resistance acceptance testing after completion.
Q: What is the biggest feature of this device?
A: It combines ground resistance and soil resistivity testing in a single device, while also supporting low resistance and AC grounding voltage testing.
Q:Why is soil resistivity important for grounding system design?
A:Soil resistivity is an important factor when designing a grounding system because it affects grounding electrode performance and the overall resistance of the grounding network. Accurate soil resistivity measurement helps engineers select an appropriate grounding method and design.
As an experienced manufacturer and supplier, we provide competitive factory-direct price, OEM/ODM service, technical support, calibration certification, and professional after-sales service. If you are looking for a reliable soil resistivity tester supplier or need the latest soil resistivity tester price, please contact us for a quotation and detailed technical information.
