The MSHL-100A Loop Resistance Tester is a high-precision micro-ohm test instrument designed according to IEC international standards and DL/T845.4-2004 power industry specifications.

Adopting high-frequency high-power constant-current switching power supply technology, this tester delivers stable and accurate micro-ohm level resistance measurement. It is widely used for loop resistance, contact resistance, wire resistance, and welding resistance testing on high-voltage switches, circuit breakers, electrical equipment and power transmission lines.

Equipped with a 7-inch high-brightness full-touch LCD screen, the device displays test current and resistance data in real time, supporting English language and clear outdoor visibility under strong sunlight.

Built with professional multi-protection systems including back EMF resistance, broken wire protection, over-temperature protection and power-off protection, the instrument ensures safe and stable operation in complex field environments.

Core Advantages

– Mobile remote control support: Full-process operation via Android phone/tablet through dedicated WeChat official account APP

– Intelligent power management: Low power consumption, low heat generation, long continuous working time

– Four-terminal testing technology: Eliminates lead resistance interference for ultra-accurate readings

– Massive data storage: Stores up to 1000 groups of test data with power-off memory function

– Multiple communication ports: Bluetooth, RS232 and USB interface for data export and computer connection

– Built-in mini printer: Supports on-site Chinese printing of test reports

Application Fields

Ideal for power bureau field maintenance, substation inspection, high-voltage switch factory testing, power equipment manufacturing and electrical engineering acceptance projects.

Test current: 50A, 100A

Range: 10 0 µ Ω～100mΩ (50A) 5 0 µ Ω～50mΩ (100A)

Minimum 0.1 µΩ

Accuracy: ± (0.5% ± 0.3 µ Ω)

Power: 1000W

Operating mode: Continuous measurement

Operating power supply: AC220V±10% 50HZ

Operating temperature: 0～40℃

Relative humidity: less than or equal to 90%, no condensation.

External dimensions: Main unit 360*290*170 (mm) Cable box 360*290*170(mm)

Weight: Main unit 6.5KG, cable box 9KG

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