Loop Resistance Tester – High-Current Contact Resistance Analyzer

The GDHL‑100A Loop Resistance Tester is designed to verify the integrity of contacts and loops in electrical systems such as transformer windings, busbars, circuit breakers, joints, and connections. By injecting a high DC current of 100 A, it ensures low resistance measurements with minimal thermal error. The device features digital readouts, built-in safety interlocks, and overload protection, suitable for both field maintenance and factory quality control. Its sturdy, portable construction is ideal for utility service teams and commissioning crews. Certified to CE and ISO standards, it complies with international guidelines like IEC 61557-3 for low-voltage systems.

Key Features:

• 100 A DC output for precise loop resistance measurement

• Accurate contact resistance testing for transformers, breakers, busbars, and connections

• Safety features include interlocks and overload protection

• Portable and rugged for onsite use

• Automatic data capture and digital display

• CE and ISO certified

• Ideal for utility maintenance, commissioning, and factory QC

Product Table (English)

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