Abstract:The loop resistance measurement of GIS equipment is one of the items of hand-over test and preventive test,Through loop resistance measurement, we can check the integrity of the loop and identify the defects such as poor contact, which is an important means to ensure the safe operation of the equipment.When measuring the loop resistance of GIS line, the difficulty is to measure the loop resistance in Lead-Out Bushing Section GIB, Because of the long distance of the lead-out bushing section GIB,shortcomings like large workload in current cable layout and take-up, long time duration and so on exist in measuring loop resistance using conventional measurement method. Considering the fact that a three-phase short circuit ground wire is required for line outage maintenance at the site, we put forward a method of measuring the loop resistance of the lead-out bushing section GIB using the three-phase short circuit ground wire as the inter-phase shorting stub. This article elaborates on the measurement principle of this method and the wire connection for the field test and takes comparative analysis on the measured data by combining the practical application example.It is proved that the measured data of the method is quite equivalent to the measured data of conventional measurement methods. It can replace conventional measurement method to carry out loop resistance measurement in Lead-Out Bushing Section GIB, Points for attention to the application of this method.