Portable Contact Resistance Testing Instrument

Portable Contact Resistance Testing Instrument

HM6090 Loop Resistance Tester is suitable for precision measurement for high/low voltage switches contact resistance and cable/line DC resistance. It also applies to other test occasions that need high current and micro resistivity.
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Description
Technical Parameters

Wuhan Goldhome Hipot Electrical Co., Ltd. is one of the leading manufacturers and suppliers of portable contact resistance testing instrument in China. With abundant experience, our factory offer high quality customized products made in China with competitive price. Welcome to contact us for quotation.

 

Products Video

 

HM6090 200A Contact resistance Tester Setting and  Display Video

Product Overview & Application Scenarios

 

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HM6090 Series Intelligent Loop Resistance Tester is made and contained of advanced high-power switching power supply technology and advanced electronic circuit. It is the dedicated tester for the resistance of high and low switch, cable wire and welding joint.

 

Application Scenarios

1. Electric Power Utilities & Substations:Testing circuit breakers, switches, and busbars.

2.Manufacturing & Heavy Industry:Preventive maintenance on factory electrical systems.

3.. Railway & Mass Transit Systems:Maintaining traction power systems and rolling stock.

4.Data Centers:Ensuring reliability of backup power systems.

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Key Features & Advantages

 

1. Color Touch Screen: 800*480 high resolution color 7'' touch screen, user interactive interface, high-speed thermal printer.

2. Large-range current output:Adopt the latest power supply technology, long time continuously output big current, large-range current output. Can set 1 to 3 different current range for testing, and automatically calculate average value.

3. Digital displaying data information:Resistance, voltage, current, electrical resistivity,resistance values at converted standard temperatures.

4. Auto-alarm of over limit:Set resistance up-limit value of pass / over limit / invalid, automatically generate testing status.

 

product Parameter

 

Selection

100A

200A

300A

400A

500A

600A

10-5000A

Measurement range

20A

50A

100A

customized

20A

50A

100A

150A

200A

customized

20A

50A

100A

150A

200A

300A

customized

20A

50A

100A

150A

200A

300A

400A

customized

20A

50A

100A

150A

200A

300A

400A

500A

customized

20A

50A

100A

150A

200A

300A

400A

500A

600A

customized

Current customized
1, two-phase
2, three-phase

Test range

0~19999mW expandable

Test precision

0.5%rdg±10dgt

Resolution

0.01mW

Working power

AC 220V±10% 50Hz±2%

Length(mm)

450

450

         

Width(mm)

250

250

         

Height(mm)

220

280

         

Weight(Kg)

9.9

12.9

         

Environment temperature

-25°C ~50°C

RH

≤90%RH

 

Maintenance & FAQs

Q: What does this tester actually measure?​

A: It measures very low electrical resistance (in micro-ohms) at high-current connection points, like those inside a circuit breaker or switch. It finds loose, corroded, or worn-out contacts.

Q: Why is this measurement important?​

A: High resistance in a connection causes overheating when high current flows. This can lead to equipment failure, fires, and power outages. This tester helps prevent those problems.

Q:How is it different from a standard multimeter?​

A:A multimeter uses a small battery-powered current and is inaccurate for very low resistances. The HM6090 uses a high test current (e.g., 100A), which is necessary to get a true reading of how the contact will perform under real load.

Q: Is it safe to use?​

A:

Yes, when used correctly by trained personnel. Key safety features include:

Automatic Discharge:​​ Safely discharges stored energy after a test.

Anti-Burn Protection:​​ Protects the tester if a lead is accidentally disconnected.

 

Q: What is a typical "good" reading?​

A: A "good" reading is very low and stable. It should be compared to the manufacturer's specification for the device being tested or to baseline readings from previous tests on the same equipment. A significant increase over time indicates a problem.

 

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