METHOD OF TESTING THE RESISTANCE OF AN ELECTRICAL CONNECTION

摘要

An earth continuity test apparatus comprises a high current pulse generator (2) connected to an earth continuity measuring circuit (4) . The earth continuity measuring circuit comprises two contacts (6 and 8) that can be connected across equipment under test (10) which represents an earth path whose resistance is to be determined. The high current pulse generator (2) comprises a battery (12) connected to a DC to DC converter (14) . DC to DC coverter (14) provides a 30V supply to charge a capacitor (16) , which is then discharged to generate a high current pulse and remove contact resistance from equipment under test (10).