The gear is used to test the contact resistance and loop resistance of the switch controlling equipments, adopting the national standard GB763 direct current DC 100A(120A/150A). It has accurate testing, stable performance and the capability of continuously running with the self-prevention of disconnecting.

Test range: 1-1999μΩ, 1-19999μΩ
Test current: DC 100A，  DC 200A
Test accuracy: Level 0.5% , Level 1.0%
Resolution factor: 1μΩ