The paper,by the theoretical analysis and calculation for the discharge time and the strike fire interval of IEC spart test device of the resistance-capacitance circuit,finds out the cause of the low sensitivity and approaches a new way to test ɑnd prove the capacitive circuit,in the prerequisite of no affect on the performances of the IEC spark test device.

With regard to factory inspection, the article demonstrate test equipment, test voltage, functional check, Calibration and the way to handle non-conforming products of Spark test in CCC and VDE Product certification.