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CRM 100C Continuous Current Contact Resistance Meter

The CRM 100C is a continuous current contact resistance meter designed for testing switchgear, isolators, circuit breakers, and other high-current components under real operational load conditions. With a regulated 100 A DC continuous output, it enables stable resistance measurement during heating, movement, or operation cycles, ensuring long-term contact reliability assessment in both field and test bay applications.

Key Features

  • Provides continuous 100 A DC output for dynamic contact testing

  • Four-terminal Kelvin connection eliminates lead resistance errors

  • Real-time resistance display in micro-ohms

  • Ideal for temperature rise and endurance tests

  • Auto polarity reversal for EMF compensation

  • Thermal and overload protection for extended operation

  • Data output via USB / RS-232

  • Rugged construction for field portability

Technical Specifications

Parameter Specification
Output Current Continuous 100 A DC
Resistance Range 0.1 µΩ – 299.9 mΩ
Resolution 0.1 µΩ
Accuracy ± 0.5 % of reading ± 2 digits
Output Duration Continuous
Display 4½-digit LCD
Power Supply 230 V AC ± 10 %, 50 Hz
Communication RS-232 / USB
Protection Thermal & Overload
Dimensions 430 × 370 × 190 mm
Weight ≈ 14 kg

Standard Accessories

  • Main test unit

  • High-current Kelvin test leads

  • Power cord

  • User manual & calibration certificate

  • Carrying case

Applications

  • Continuous current testing of switchgear and isolators

  • Long-duration contact resistance and thermal rise tests

  • Research, design validation, and service applications

  • Predictive maintenance in substations and industrial sites

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