ORC( 2 00 D ) Loop Resistance Tester I. Product introduction The operation panel of the ORC (200D) circuit resistance tester features an ergonomic design optimized for user ergonomics. Utilizing a high-frequency switching power supply and digital circuit technology, this device is suitable for measuring circuit resistance in switchgear and control equipment. It supports test currents of 100 A and 200 A DC, as recommended by national standards, enabling direct measurement of
