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Professional High-Performance Multi-Function Earth Resistance Tester - Precise-Detection Low-Power Anti-Interference
1 Piece
$924Product information
High-quality Professional High-Performance Multi-Function Earth Resistance Tester - Precise-Detection Low-Power Anti-Interference supplied by Refine On (Hebei) Electric Power Technology Co., Ltd.. Bulk wholesale pricing is $924 per Piece with a minimum order of 1 Piece. Inquiry for latest prices.
Working Temperature And Humidity:
-10℃~40℃,80%Rh or Below
Storage Temperature And Humidity:
-20℃~60℃,70%Rh or Below
Current Resolution:
0.001mA
Voltage Resolution:
0.01V
Accuracy Grade:
1
Package Gross Weight:
10.000kg
Production Capacity:
100 Set Per Week
Accuracy Guaranteed Temperature And Humi:
23℃±5℃, Below 75%Rh
Specifications
Working Temperature And Humidity:
-10℃~40℃,80%Rh or Below
Storage Temperature And Humidity:
-20℃~60℃,70%Rh or Below
Current Resolution:
0.001mA
Voltage Resolution:
0.01V
Accuracy Grade:
1
Package Gross Weight:
10.000kg
Production Capacity:
100 Set Per Week
Accuracy Guaranteed Temperature And Humi:
23℃±5℃, Below 75%Rh
Specification:
277mm×227mm×153mm
Package Size:
37.00cm * 28.00cm * 26.00cm
Power Consumption:
750mA Max
Weight:
7kg
HS Code:
9030332000
Pressure Resistance:
AC 3700V/RMS(Between Circuit and Outside)
Function2:
AC Current Test, AC Voltage Test
Origin:
China
Refund Policy:
Claim a refund if your order doesn't ship, is missing, or arrives with product issues.
Control:
Computer Control
Shipping Cost:
Contact the supplier about freight and estimated delivery time.
Power Source:
DC 3.7 Lithium Battery
Display:
Digital
Load Way:
Electronic Load
Trade Term:
FOB, EXW
Function1:
Ground Resistance Test, Loop Resistance Test
Model NO.:
NR3002E
Trademark:
Refine On
Payment Methods:
Support payments in USD
Payment Term:
T/T
Port Of Loading:
Tianjin Port
Transport Package:
Wooden Box with Foam Inside
Business Details
Country:
China
Business Types:
Not specified
Main Markets:
Not specified
Main Products:
Year Established:
2019-11-06
Annual Revenue Amount:
Not specified
Numbers Of Employees:
48
Preferred Payment Term:
T/T
Preferred Trade Term:
FOB, EXW
Port Of Loading:
Tianjin Port
Certificates:
ISO9001:2015
Product descriptions from the supplier
SONA2024 2.2.1
Product Description
PRODUCT FUNCTION
NR3002E Multi-function Earth Resistance Tester Manual
Introduction
The multi-function ground resistance tester, also known as the ground resistance tester, integrates multiple measurement methods into one advanced instrument. In addition to the traditional function of measuring ground resistance by driving auxiliary ground electrodes, it also features the unique capability of measuring without auxiliary ground electrodes.Through microprocessor control, it precisely measures ground resistance using four-wire, three-wire, simplified two-wire, selective, and dual-clamp methods. The large-diameter current clamp design employs dual-clamp measurement technology, enabling online measurement without the need for auxiliary ground electrodes or isolating the grounding body from equipment. It is widely used in telecommunications, power systems, weather stations, equipment rooms, oil fields, power distribution lines, transmission towers, gas stations, factory grounding networks, lightning rods, etc. The instrument is characterized by accurate, fast, simple, stable, and reliable testing.
Technical Parameters
1.Measurement Ranges, Accuracy, and Resolution |
Measurement Function | Range | Accuracy | Resolution |
two/three/four-WireGround Resistance(Re) | 0.000Ω~19.999Ω | ±1.5%rdg±70dgt | 0.001Ω |
20.00Ω~199.99Ω | 0.01Ω | ||
200.0Ω~1999.0Ω | 0.1Ω | ||
2.000kΩ~19.999kΩ | 1Ω | ||
20.00kΩ~200.00kΩ | 10Ω | ||
DC Resistance(R-) | 0.000Ω~19.999Ω | ±1.5%rdg±70dgt | 0.001Ω |
20.00Ω~199.99Ω | 0.01Ω | ||
200.0Ω~1999.9Ω | 0.1Ω | ||
2.000kΩ~19.999kΩ | 1Ω | ||
20.00kΩ~200.00kΩ | 10Ω | ||
Selective Method Ground | 0.00Ω~20.00Ω | ±2%rdg±30dgt | 0.01Ω |
20.0Ω~200.0Ω | 0.1Ω | ||
0.200kΩ~3.000kΩ | 1Ω | ||
Dual-Clamp Ground Resistance(Re) | 0.00Ω~9.99Ω | ±10%rdg±10dgt | 0.01Ω |
10.0Ω~99.9Ω | 0.1Ω | ||
100Ω~200Ω | ±15%rdg±10dgt | 1Ω | |
Soil Resistivity | 0.00Ωm~99.99Ωm | ρ=2πaR (2) | 0.01Ωm |
(ρ) | 100.0Ωm~999.9Ωm | 0.1Ωm | |
1000Ωm~9999Ωm | 1Ωm | ||
10.00kΩm~99.99kΩm | 10Ωm | ||
100.0kΩm~999.9kΩm | 100Ωm | ||
1000kΩm~9999kΩm | 1kΩm | ||
AC Voltage | 0.000~9.999V | ±1.5%rdg±50dgt | 0.001V |
10.00~50.00V | 0.01V | ||
AC Current | 0.00mA~9.99mA | ±2%rdg±50dgt | 0.01mA |
10.00mA~99.99mA | 0.01mA | ||
100.0mA~999.9mA | 0.1mA | ||
1.000A~9.999A | 1mA | ||
10.00A~99.99A | 10mA | ||
100.0A~999.9A | 0.1A | ||
DC Voltage | 0.000~9.999V | ±1.5%rdg±50dgt | 0.001V |
10.00~50.00V | 0.01V | ||
Temperature Characteristics | Temperature Characteristics: Add specified accuracy × 0.1/°C (when operating outside 18°C to 28°C). | ||
Example at 8°C:±0.2%rdg±10dgt (base accuracy) + 0.1×10 (temperature difference) × (0.2%rdg+10dgt) =±0.4%rdg±20dgt | |||
Note: 1. Reference Conditions: Accuracy specified when Rh and Rs < 100Ω.
Operating Conditions: Maximum Rh = 3kΩ + 100R < 50kΩ, Maximum Rs = 3kΩ + 100R < 50kΩ
Operating Conditions: Maximum Rh = 3kΩ + 100R < 50kΩ, Maximum Rs = 3kΩ + 100R < 50kΩ
2.Accuracy depends on the measurement precision of R, π = 3.14, a :0.1m–100.0m
2.General Specifications |
Ambient temperature and humidity | 23℃±5℃, below 75%rh |
Interfering voltage | <20V (should be avoided) |
Interfering current | <2A (should be avoided) |
Electrode - to - electrode distance when measuring | a>5d |
R | |
Electrode - to - electrode distance when measuringρ | a>20h |
Power Supply | 11.1V lithium - ion battery (built - in), can continuously measure in AC resistance mode when fully charged for more than 1000 times |
Screen brightness | Controllable, users can adjust it according to the scene |
Measurement method | Precision four - wire, three - wire method measurement, simple two - wire, selective, dual - clamp method to measure ground resistance |
Measurement method details | Two - three - four - wire method measurement: Polarity - changing method, measurement current 42.0mA Max |
Soil resistivity: Four - pole method | |
Selective measurement: Polarity - changing method, measurement current 42.0mA Max | |
Dual - clamp method: Non - contact mutual induction measurement method, test current 40mA Max | |
DC resistance: Polarity - changing method | |
AC current: Average value rectification (clamp - type) | |
Ground voltage: Average value rectification (between S - ES interfaces) | |
DC voltage: Average value rectification (between S - ES interfaces) | |
Test voltage waveform | Sine wave |
Test frequency | 128Hz |
Open - circuit Test Voltage | AC 30.0VMaxDC 30.0VMax |
Electrode Interval Range | 0.1m~100.0m |
Display Mode | Color - display screen |
Instrument Size | Length×Width×Height:277.2mm×227.5mm×153mm |
Current Clamp Size | Length×Width×Height:101mm×27mm×214mm |
Test Wires | 4 pieces: 15m red, 15m black, 10m yellow, 10m green each |
Simple Test Wires | 2pcs: 1.5m redand 1.5m green each |
Auxiliary Grounding Rod | 4 pieces:φ10mm×200mm |
Current Clamp | Banana plug×1, audio plug×1 |
Current clamp caliber | φ50mm |
Current Clamp Leads | Length 2m |
Measurement Time | ACcurrent: about 3 times/second |
Ground - to - earth voltage: about 3 times/second | |
Grounding resistance, soil resistivity: about 10 seconds/time | |
USB Interface | Has a USB interface, and stored data can be uploaded to a computer through software |
Bluetooth Connection | Yes, real - time monitoring, data reading and other functions can be carried out on a mobile phone |
Data Line | USB communication line, 1.5m |
Data Storage | 500 groups, "FULL" symbol indicates that the storage is full |
Overflow Display | Over- range displays "OL" symbol |
Auxiliary Grounding Test | Has the function of auxiliary grounding resistance test, 0.00kΩ~200.00kΩ |
Alarm Function | An alarm is issued when the measured value exceeds the set alarm value (buzzer alarm) |
Automatic Power off | “APO”indicator, automatic power offafter 15 minutes (default) |
Power Consumption | Screen brightness:190mA Max(maximum brightness)140mA Min(minimum brightness) |
Measurement:200mA Max(maximum brightness)150mA Min(minimum brightness) | |
Weights | instrument:1975g(include battery) |
current clamp:940g(2 pcs) | |
test lead:1300g(includes simple test lead) | |
auxiliary grounding rods:850g(4rods) | |
Working temperature and humidity | -10℃~40℃;80%rh or below |
Storage temperature and humidity | -20℃~60℃;70%rh or below |
Over-load Protection | Measurement of ground-to -earth voltage: H - E, S - E (port - to - port) AC 280V/3 seconds |
Insulation Resistance | 20MΩ or above (between the circuit and the shell 500V) |
Withstand Voltage | AC 3700V/rms(between the circuit and the shell) |
Electromagnetic Compatibility | IEC61326(EMC) |
Safety Class | IEC61010-1 (CAT III 300V, CAT IV 150V, pollution degree 2); IEC61010-031; |
IEC61557-1 (earth resistance); | |
IEC61557-5 (soil resistivity); | |
JJG 366-2004 (earth resistance meter); | |
JJG 1054-2009 (clamp-on earth resistance meter). |
PRODUCT APPLICATION
Company Profile
ABOUT US
Refine On (Hebei) Electric Power Technology Co., Ltd. is located in the Mancheng High-tech Development Zone, Baoding. It is fully committed to the high-tech field of power system automation, specializing in the research and development of a series of products such as power system marketing measurement, operation and maintenance high-voltage testing, distribution network testing, power consumption inspection, and tools and meters. It is a technology-oriented enterprise integrating R&D, production, sales and service. The company provides instruments, meters and testing equipment related to power generation, transmission, transformation, distribution and sales. Provide sales of complete sets of instruments and equipment required for installation (repair, testing) of Grade one, Grade Two, Grade Three and Grade Four.
The company is equipped with various production, testing and inspection facilities, has a sound management system, and strictly adheres to the GB/T19001-2016 quality management system standard for production and operation. A number of high-tech instruments and equipment that meet the on-site requirements have been developed. At present, the products have been widely applied in multiple fields such as power, railway, mining, petroleum and chemical engineering.
The company has obtained the Quality management System certification certificate, 2 invention patents, 10 utility model patents and 20 software Copyrights. And it has established long-term and close cooperative relations with units such as Beijing Institute of Metrology, Beijing Electric Power Research Institute, and Hebei Institute of Metrology.
Our main products include insulating oil tester series, insulating resistance tester, power quality analyzer, circuit breaker, relay protection tester, high-voltage generator, high-voltage capacitor, test transformer, transformer test series, etc.
Certifications
Packaging & Shipping
FAQ
FAQ
1. Insulating Oil Tester Series
1.1 What is the main function of the Insulating Oil Dielectric Strength Tester (80kv/100kv)?
Tests insulating oil's dielectric strength to detect impurities, moisture, or aging, ensuring safe operation of transformers and circuit breakers.
1.1 What is the main function of the Insulating Oil Dielectric Strength Tester (80kv/100kv)?
Tests insulating oil's dielectric strength to detect impurities, moisture, or aging, ensuring safe operation of transformers and circuit breakers.
1.2 How often should the Insulating Oil Dielectric Strength Tester be calibrated?
At least once a year; shorten intervals for frequent use, harsh environments, or post-maintenance.
At least once a year; shorten intervals for frequent use, harsh environments, or post-maintenance.
1.3 What is the difference between the Closed Cup Flash Point Automatic Tester and the Open Cup Flash Point Automatic Tester?
• Closed Cup: Tests in sealed containers; for low-flash oils (e.g., diesel) and sealed power equipment.
• Closed Cup: Tests in sealed containers; for low-flash oils (e.g., diesel) and sealed power equipment.
• Open Cup: Tests in open containers; for high-flash oils (e.g., insulating oil) and air-exposed scenarios.
2. Transformer Test Series
2.1 What can the Transformer Capacity Tester detect?
Detects transformer's actual capacity, no-load/load loss, no-load current, and impedance voltage; judges compliance and faults.
2.1 What can the Transformer Capacity Tester detect?
Detects transformer's actual capacity, no-load/load loss, no-load current, and impedance voltage; judges compliance and faults.
2.2 How to use the Transformer Tap Changer Tester?
1. Connect test lines to tap changer terminals per manual.
1. Connect test lines to tap changer terminals per manual.
2. Power on, select test mode (e.g., resistance test).
3. View results; disconnect and power off after. (Note: De-energize and ground transformer first.)
2.3 What is the purpose of the Transformer Winding Deformation Tester?
Detects winding deformation (axial displacement, short circuits) from short-circuits or vibration; enables early maintenance to avoid accidents.
Detects winding deformation (axial displacement, short circuits) from short-circuits or vibration; enables early maintenance to avoid accidents.
FAQ
3. Circuit Breaker Test Instruments
3.1 What are the differences between the Single-Chip Microcomputer and Industrial Computer Circuit Breaker Characteristic Testers?
• Industrial Computer: Stronger data processing, more tests (e.g., dynamic resistance), touch interface, and computer data communication.
• Single-Chip: Simple structure, low cost; for basic characteristic tests.
3.2 How to judge whether the Circuit Breaker Characteristic Tester is working normally?
1. Check power and indicator lights.
2. Run self-test; test a standard circuit breaker.
3. Confirm results are within allowable error. Stop use if self-test fails or errors are large.
4. Cable Fault Test Instruments
4.1 What types of cable faults can the Multiple Pulse Cable Fault Tester detect?
Detects low-resistance (short circuits), high-resistance (leakage), and open-circuit faults; locates faults via pulse reflection.
4.2 How to improve the accuracy of the Cable Fault Location Tester?
• Ensure correct, firm test line connections.
• Select proper test mode/parameters for fault type.
• Eliminate environmental interference; keep site clean/dry.
• Calibrate regularly.
• Test multiple times for complex faults; analyze results comprehensively.
5. Insulation Resistance Tester
5.1 What is the application scope of the High-Voltage Insulation Resistance Tester?
Tests insulation of high-voltage equipment (transformers, generators, cables, etc.); checks for moisture, dirt, or aging to support commissioning and maintenance.
5.2 How to (complete based on full content; core steps?
3.1 What are the differences between the Single-Chip Microcomputer and Industrial Computer Circuit Breaker Characteristic Testers?
• Industrial Computer: Stronger data processing, more tests (e.g., dynamic resistance), touch interface, and computer data communication.
• Single-Chip: Simple structure, low cost; for basic characteristic tests.
3.2 How to judge whether the Circuit Breaker Characteristic Tester is working normally?
1. Check power and indicator lights.
2. Run self-test; test a standard circuit breaker.
3. Confirm results are within allowable error. Stop use if self-test fails or errors are large.
4. Cable Fault Test Instruments
4.1 What types of cable faults can the Multiple Pulse Cable Fault Tester detect?
Detects low-resistance (short circuits), high-resistance (leakage), and open-circuit faults; locates faults via pulse reflection.
4.2 How to improve the accuracy of the Cable Fault Location Tester?
• Ensure correct, firm test line connections.
• Select proper test mode/parameters for fault type.
• Eliminate environmental interference; keep site clean/dry.
• Calibrate regularly.
• Test multiple times for complex faults; analyze results comprehensively.
5. Insulation Resistance Tester
5.1 What is the application scope of the High-Voltage Insulation Resistance Tester?
Tests insulation of high-voltage equipment (transformers, generators, cables, etc.); checks for moisture, dirt, or aging to support commissioning and maintenance.
5.2 How to (complete based on full content; core steps?
Store in dry environment, avoid impact; clean terminals before use; calibrate regularly to maintain accuracy.)
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You can contact verified China supplier Refine On (Hebei) Electric Power Technology Co., Ltd. through platforms like Freshdi.com to purchase Professional High-Performance Multi-Function Earth Resistance Tester - Precise-Detection Low-Power Anti-Interference. For direct inquiries, please contact Mr. Wang, the company’s representative. The supplier has a 3.7-star rating on Freshdi and has verified. You’ll receive product details, pricing, and shipping terms directly from supplier.
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For Professional High-Performance Multi-Function Earth Resistance Tester - Precise-Detection Low-Power Anti-Interference, Refine On (Hebei) Electric Power Technology Co., Ltd. accepts T/T as the preferred payment method, the trade term is FOB, EXW, and shipments are typically arranged from port Tianjin Port, ensuring secure and timely international delivery.
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The supplier Refine On (Hebei) Electric Power Technology Co., Ltd. offers Professional High-Performance Multi-Function Earth Resistance Tester - Precise-Detection Low-Power Anti-Interference at negotiation.
What are the specifications of Professional High-Performance Multi-Function Earth Resistance Tester - Precise-Detection Low-Power Anti-Interference from China?
Professional High-Performance Multi-Function Earth Resistance Tester - Precise-Detection Low-Power Anti-Interference is sourced from China and meets international export standards. Key specifications include: Specification: 277mm×227mm×153mm, Accuracy Guaranteed Temperature and Humi: 23℃±5℃, Below 75%Rh, Display: Digital, Function2: AC Current Test, AC Voltage Test, Origin: China, Working Temperature and Humidity: -10℃~40℃,80%Rh or Below, Trade Term: FOB, EXW, Payment Term: T/T
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$924
/ Piece
Min. order: 1 Piece
Mr. Wang
Year Established: 2019-11-06
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