General introduction

Circuit Breakers are one of the critical “safety-valves” of electrical systems and basic maintenance procedures are essential to maintain maximum reliability.

This instrument is designed for testing DC circuit breakers at rated current of 1A-500A. It is suitable for on-site test of substations.

Features

• The instrument can be used separately or linked to PC.
• 320*240 LCD screen, thermal printer, interactive keyboard operation, and intelligent operation system.
• Power electronics controlling technique has been adopted to output high current, which is high speed, high precision and continuous adjustability.
• Current range can be automatically switched by multiple high precision sensors.14 digit AD acquisition chip of high capacity.
• Automatic data storage. Be capable of saving 200 testing results, which will not lose in power failure.
• Optional for ampere-second characteristic test or through current characteristic test.
• When linking to PC, it is available to do following operations, such as controlling the instrument, data importing, data saving, data report and data graph generation.
• Protection functions for overheat, over-current and over voltage. Anti-interference capacity and good EMC (electromagnetic compatibility).

Specifications

• Power supply: AC220V±10%, 50Hz±0.5Hz
• Testing current range: 0-500A (can be extended to 1000A)
• Testing current ripple coefficient: <2%
• Stability of output current: ≤0.5%
• Ampere-second characteristic test: Time:0-9.9s; Time resolution(min.): 0.1ms
• Through current characteristic test: time:0-9999s; Time resolution(min.): 0.1s
• Environmental temperature: -20--50℃.
• Size: 560*410*350mm
• Weight: 31kg.