Digital microhmmeter UHV-H200A

portablewith integrated temperature compensationlow-resistance

The UHV-H200A Micro-ohmmeter circuit breaker resistance tester is a portable, high-precision contact-resistance tester for on-site maintenance of switchgear and factory testing of circuit breakers. It combines high-frequency switching power supply technology with digital circuits to provide stable, repeatable and accurate measurements.

Features

• Large continuous output current: advanced power supply design provides long-duration high current output (DC 50 A / 100 A / 150 A / 200 A) to effectively break oxide films on contacts and deliver reliable contact-resistance readings.
• Strong anti-interference performance: LCD retains stable last-data reading within ±1 digit under severe interference, ensuring consistent readings and good repeatability.
• Long service life and stability: high-precision reference resistors reduce the influence of ambient temperature; rugged, military-grade connectors improve vibration resistance.
• Portable design: compact size and light weight for field use and easy transport.

Product media

• Embedded product demonstration video available (YouTube).
• Multiple product images and application photos showing instrument, accessories and use scenarios.

Specifications

• Measuring range 11999μΩ
• Resolution 1μΩ
• Test current DC50A、100A、150A、200AFour speed fixed output
• Accuracy 0.5%±1d
• Way to work The connection
• Display Three and a half LCD
• Power supply AC220V±10% 50Hz
• Working environment Temperature: -10℃ ~ 40℃, humidity: ≤80%RH
• Diemension 440(L)×410(W)×190(H)mm3
• Weight 8.7kg(excluding attachments)

Application Scenario:

• 1、 Power system

1. High voltage switchgear:
Circuit breaker: Measure the resistance of its conductive circuit to ensure the conductivity of the equipment under normal operation and short-circuit conditions.
2. Isolation switch: Detect the contact resistance between the contacts, evaluate the reliability and safety of the switch.
3. Power plants and substations:
Used to measure the circuit resistance of large electrical equipment, such as busbar joints, transformers, lightning arresters, etc., to ensure the stable operation of the power system.

• 2、 Industrial sector

1. Large scale industrial and mining enterprises:
Measure the circuit resistance of various electrical equipment, such as motors, transformers, switchgear, etc., to ensure the normal operation and safe production of the equipment.
2. Automated production line:
On automated production lines, circuit resistance testers can be used to detect the contact resistance of electrical connection points, ensuring the continuity and stability of the production line.

• 3、 Other applications

1. Grounding system testing:
Measure the conduction resistance between the grounding down conductor and the grounding grid, and evaluate the reliability and safety of the grounding system.
2. Research and teaching:
In electrical science research and teaching, circuit resistance testers can be used for experiments and research, helping students understand the basic principles and measurement methods of electrical circuits.