Information On Insulation Fault Finding

• The measurements must be performed using the insulation tester > VAS 6838 - Insulation tester  .
• A measuring voltage of 500 V  must be selected.
• To obtain the required measuring resistance, the measuring voltage must be present on the insulation tester for at least 5 second. 
• Two measurements must always be performed for each measuring point. Positive terminal on shielding and negative terminal on shielding.
• A measurement is only regarded as being within the tolerance range if both measured values (positive terminal on shielding and negative terminal on shielding) are within the tolerance range.
• The direction of measurement of the insulation tester does not affect the test result.
• The measured values must be documented in the "Insulation fault finding test log".
• The test log is stored under Repair INformation 2X00IN in the Service Information.
• The measurement process must be repeated after replacing a component in the high-voltage system.
• The high-voltage lines at the power electronics and the E-box (screwed connections) have 5 mating cycles. If these 5 mating cycles are exceeded, a visual inspection must be performed on the high-voltage connectors. Then contact Technical Support.

Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Insulation fault finding