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Contact Resistance Test Set

Contact Resistance Test Set

The UHV-H100P Contact Resistance Test Set is suitable for high-precision measurement of high and low voltage switch contact (circuit) resistance and cable line DC resistance values, and is also suitable for other occasions that require high current and micro resistance measurement.

Product Introduction

 

Product introduction

HTY5832

The UHV-H100P high-precision contact resistance test set is an electronic instrument specifically designed for accurately measuring low-value resistances. Its primary application is measuring contact resistance or loop resistance in electrical systems, including switches, circuit breakers, disconnect switches, busbar connections, cable joints, and similar equipment.

Technical Parameters

 

Measuring range 50A 0~10mΩ
100A 0~5mΩ
Resolution 0~99.99μΩ, 0.01μΩ
100.0~10000.0μΩ, 0.1μΩ
Test current DC50A, 100A two-speed fixed output
measurement accuracy ±(0.5% rd+2d)
Operating Time Options​ Quick, 10s, 30s, 60s
Display method 4-inch touchscreen
communication mode U disk dump
Working power AC220V±10% 50Hz
Total power 600W
Maximum storage record 200
working environment temperature: -10℃~40℃, humidity:≤80%RH
Dimensions 390×300×150 mm3
Weight 6kg(No attachments)

 

Significant product advantages

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1. Ensure the safe operation of equipment: An increase in circuit resistance is the main cause of equipment overheating or even burning out. This contact resistance test instrument supplier can directly detect this hidden danger and prevent it from developing into a major safety accident due to poor contact.
2. High precision and strong anti-interference ability: By using the DC voltage drop method (such as 100A constant current source), loop resistance tester manufactures can effectively overcome the interference of contact potential, accurately measure micro ohm level (μ Ω) resistance, and the results are reliable.
3. Improve operation and maintenance efficiency: The testing process is fast and simple, which can intuitively and quantitatively reflect the connection quality, provide accurate data support for status maintenance, avoid blind disassembly and excessive maintenance, and significantly improve work efficiency.

 

Primary Applications

 

1. Power system:

Power plants, substations, and converter stations: circuit resistance testing for high/medium voltage circuit breakers (SF6, vacuum), isolating switches, GIS composite appliances, busbars, bushings, grounding switches, etc.

Transmission lines: Contact resistance testing of cable joints and clamps.

Distribution network: Contact resistance testing of distribution switchgear, load switches, fuses, etc.

2. Manufacturing industry: Factory testing and quality inspection of switch equipment manufacturers' products.

3. Industrial users: Preventive testing of internal power equipment in large factories, mines, petrochemical enterprises, etc.

4. Rail transit: Testing of traction power supply system switchgear for high-speed trains and subways.

5. Research and quality inspection institutions: verification of relevant standards, research on material resistance characteristics, etc.

6. Other occasions that require precise measurement of low resistance values, such as welding point resistance, metal material resistivity (requiring fixture coordination), etc.

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product-2000-1334
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product-2000-1334

How Does UHV Ensure Strong Anti-Interference Performance?

Substation environments often contain strong electromagnetic interference.

UHV contact resistance test instrument factory utilize:

Digital filtering technology

High-frequency switching power supply

Precision signal acquisition circuits

Stable constant-current source output

These technologies help ensure measurement stability and repeatability in operating substations and industrial environments.

 

Does UHV Equipment Comply with IEC and IEEE Standards?

Yes.

UHV contact resistance tester supplier is designed according to:

DL/T845.4 Power Industry Standard

SD301 Regulations for Power Equipment Testing

In addition, contact resistance testing methods are aligned with international practices referenced in:

IEC 62271-100

IEEE C37 series standards

The use of 100A DC and above for circuit breaker contact resistance measurement supplier follows widely accepted industry requirements.

 

Do You Provide Calibration Certificates and Quality Documentation?

Yes.

Before shipment, every UHV instrument undergoes:

Functional testing

Performance verification

Factory inspection

Quality control procedures

Available documentation includes:

Factory Test Report

Inspection Certificate

User Manual

Calibration-related documentation upon request

UHV operates under a certified quality management system.

 

Does the Tester Support Data Storage and Reporting?

Yes.

Depending on the model, UHV testers provide:

Internal data storage

U-disk (USB) export

Historical record management

Touchscreen operation

Printing support

Data transfer for report generation

Some models can store up to 200 test records and allow convenient data export for maintenance documentation.

 

Why Choose UHV?

✔ Professional manufacturer of high-voltage electrical testing equipment

✔ Micro-ohm resolution up to 0.01μΩ

✔ Test current options up to 200A DC

✔ Designed for GIS, circuit breakers, disconnectors, and busbars

✔ Strong anti-interference performance

✔ Compliant with power industry standards

✔ Data storage and USB export capability

✔ Factory testing and quality documentation

✔ Global technical support

✔ OEM/ODM customization available

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