Product Introduction
Angground resistance tester is a professional grounding test device developed with microprocessor technology. It is mainly used for grounding performance testing of power systems, communication base stations, substations, gas stations, lightning protection systems, and other grounding devices.
Angground resistance tester manufacturer integrates ground resistance testing, soil resistivity testing, and ground voltage measurement into one unit, supporting 2-wire, 3-wire, and 4-wire measurement methods. It adopts intelligent filtering and anti-interference technology to effectively reduce the impact of on-site interference on test results, providing fast, stable, and reliable data support for the installation, acceptance, maintenance, and preventive testing of grounding systems.
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Product functions
1. Multi-Method Ground Resistance Measurement: It supports 2-wire, 3-wire, and 4-wire measurement methods for ground resistance, providing flexibility for different testing scenarios.
2. Wide Measurement Ranges: It measures ground resistance from 0.01Ω to 30.00kΩ, soil resistivity from 0.00Ωm to 9999kΩm, and ground voltage from 0.00V to 600V.
3. Automatic Detection: The microprocessor automatically detects the connection status of each interface and the interference voltage and frequency of the ground network.
4. Auxiliary Ground Electrode Testing: It has the function of testing the resistance value of the auxiliary ground electrode.
5. Data Storage: It can store up to 500 groups of data, with "MEM" storage indicator and "FULL" symbol when storage is full.
6. Alarm Function: An alarm is issued when the measured value exceeds the alarm setting value.
7. Backlight Display: A 4-digit large LCD display with controllable off-white backlight, suitable for use in dim places.
8. Automatic Functions: It includes automatic range shifting, automatic shutdown after 15 minutes, and battery low voltage indication.
Mga teknikal na parameter
| Measuring function | Saklaw ng pagsukat | Katumpakan | Resolusyon |
| Ground resistance (R) | 0.00Ω～30.00Ω | ±2%rdg±5dgt (Note 1) | 0.01Ω |
| 30.0Ω～300.0Ω | ±2%rdg±3dgt | 0.1Ω | |
| 300Ω～3000Ω | ±2%rdg±3dgt | 1Ω | |
| 3.00kΩ～30.00kΩ | ±2%rdg±3dgt | 10Ω | |
| Soil resistivity(ρ) | 0.00Ωm～99.99Ωm | ρ=2πaR (Note 2) | 0.01Ωm |
| 100.0Ωm～999.9Ωm | 0.1Ωm | ||
| 1000Ωm～9999Ωm | 1Ωm | ||
| 10.00kΩm～99.99kΩm | 10Ωm | ||
| 100.0kΩm～999.9kΩm | 100Ωm | ||
| 1000kΩm～9999kΩm | 1kΩm | ||
| Ground voltage | AC 0.00～600V | ±2%rdg±3dgt | 0.01V |
Tandaan:1、Standard condition: Accuracy when Rh Rs<100Ω.
Working conditions: Rh max = 3kΩ+100R < 50kΩ; Rs max = 3kΩ+100R < 50kΩ
2、Depends on the measurement accuracy of R, π=3.14, a:1 m ~ 100m;
General specification
| Work and energy | Two, three, four lines to measure ground resistance, soil resistivity; |
| Grounding voltage and AC voltage measurement | |
| Ambient temperature and humidity | 23℃±5℃, less than 75%rh |
| kapangyarihan | DC 9V 6 LR14 dry battery continuous standby more than 100 hours |
| Interference voltage | < 20V (should be avoided) |
| Interference current | < 2A (should be avoided) |
| Electrode spacing when measuring R | a＞5d |
| Electrode spacing when measuring ρ | a＞20h |
| Pantulong na paglaban sa saligan | The base condition is < 100Ω, and the working condition is < 5kΩ |
| Saklaw ng pagsukat | Ground resistance: 0.00Ω to 30.00kΩ |
| Soil resistivity: 0.00Ωm ~ 9999kΩm | |
| Ground voltage: 0.00V to 600V | |
| Measurement mode | Precision 4-wire, 3-wire method measurement, simple 2-wire ground resistance measurement |
| Measurement method | Ground resistance: rated current pole-changing method |
| Soil resistivity: quadrupole method | |
| Ground voltage: Average rectification (between S-ES interfaces) | |
| Test frequency | 128Hz |
| Short-circuit test current | AC > 20mA (sine wave) |
| Open-circuit test voltage | AC 28V max |
| Electrode spacing range | Can be set to 1m ~ 100m |
| Paglipat | Ground resistance: 0.00Ω ~ 30.00kΩ automatic shift |
| Soil resistivity: 0.00Ωm ~ 9999kΩm automatic shift | |
| Backlight | Controllable off-white backlight, suitable for use in dim places |
| Display mode | 4 digit large LCD display with off-white backlight |
| Measurement indication | LED flicker during measurement |
| LCD size | 111mm×68mm |
| LCD display field | 108mm×65mm |
| Meter size | 240mm (L)×188mm (W)×85mm (H) |
| Standard test line | 4 pieces: red 15m, black 15m, yellow 10m, green 10m each 1 piece |
| Simple test line | 2 pieces: yellow 1.5m, green 1.5m each |
| Auxiliary ground rod | 4 roots |
| Measuring time | Voltage to ground: about 3 times/second |
| Ground resistance, soil resistivity: about 7 seconds/time | |
| Ground voltage | AC below 600V measurement (Grounding voltage measurement function cannot be used to measure commercial electricity) |
| Imbakan ng data | 500 group, "MEM" storage indicator, showing the "FULL" symbol indicates that the storage is full |
| Data lookup | The "MR" symbol indicates when consulting data |
| Overflow display | The "OL" symbol indicates when an overrange overflow occurs |
| Alarm function | An alarm is issued when the measured value exceeds the alarm setting value |
| Battery voltage | The battery low voltage symbol is displayed |
| Automatic shutdown | "APO" indicates that it automatically shuts down after 15 minutes of startup |
| Konsumo sa enerhiya | Standby: Approx. 40mA(backlight off) |
| Turn on the backlight: about 43mA | |
| Measurement: Approx. 75mA(backlight off) | |
| Quality | Meter: 1280g(including battery) |
| Test line: 1300g | |
| Auxiliary ground rod: 720g(4) | |
| Operating temperature and humidity | -10℃ ~ 40℃; Less than 80%rh |
| Storage temperature and humidity | -20℃ ~ 60℃; Below 70%rh |
| Proteksyon ng labis na karga | Measurement Ground resistance: AC 280V/3 seconds between H-E and S-ES ports |
| Paglaban sa pagkakabukod | More than 20MΩ (500V between circuit and housing) |
| Makatiis ng boltahe | AC3700V/rms(between circuit and housing) |
| Electromagnetic characteristic | IEC61326(EMC) |
| Fit for safety | IEC61010-1(CAT Ⅲ 300V, CAT IV 150V, pollution degree 2); |
| IEC61010-031; | |
| IEC61557-1(ground resistance); | |
| IEC61557-5(Soil resistivity); | |
| JJG 366-2004; |
Application Scenarios
1. Telecommunications: Measuring grounding resistance of communication towers, base stations, and equipment.
2. Electric Power: Testing grounding systems in substations, power plants, distribution lines, and transmission towers.
3. Meteorological Stations: Verifying grounding of meteorological equipment and lightning rods.
4. Computer Rooms: Ensuring proper grounding of computer rooms and sensitive electronic equipment.
5. Oil Fields and Gas Stations: Measuring grounding resistance of equipment and storage tanks in hazardous areas.
6. Factories and Industrial Facilities: Testing grounding networks in industrial plants and production facilities.
7. Lightning Protection Systems: Verifying the effectiveness of lightning rod and surge protection grounding.
Frequently Asked Questions
Q: What is the primary purpose of the earth resistance tester?
A: It is used to measure ground resistance and soil resistivity to verify that grounding systems provide a reliable, low-resistance path for fault currents, ensuring equipment safety and personnel protection.
Q: What measurement methods does the ground resistance tester support?
A: It supports 2-wire, 3-wire, and 4-wire methods for ground resistance measurement, and the quadrupole method for soil resistivity measurement.
Q: Is the display easy to read when used outdoors?
A: The ground resistance tester factory features an LCD display with backlight function, making it easy for users to view test data under different lighting conditions.
Q: Is this ground resistance tester suitable for testing newly built grounding systems?
A: Yes. It can be used for ground resistance testing during grounding engineering construction, as well as soil resistivity testing, providing reference data for grounding system design and construction.
Q: Can the electrode spacing be adjusted during testing?
A: Yes. During soil resistivity testing, the electrode spacing can be set according to actual testing requirements, with a range of 1 to 100 meters.
Wuhan UHV Power Technology Co., Ltd. is a professional earth resistance tester manufacturer and supplier in China, providing reliable grounding test equipment for power systems, substations, telecommunications, lightning protection, construction, and industrial applications. The earth resistance tester supports 2-wire, 3-wire, and 4-wire testing, as well as ground resistance, soil resistivity, and ground voltage measurement. As an experienced earth resistance tester manufacturer, we provide factory-direct solutions, competitive earth resistance tester price, OEM service, technical support, and a one-year warranty. If you are looking for an Earth Resistance Tester supplier or want to get the latest Earth Resistance Tester price for bulk orders, projects, or wholesale purchase, please contact us for a quotation and professional solution.
