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Home >> Porsche >> 2016 >> Cayman GTS, Standard Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 215 (2X - Petrol, Exhaust, Engine-Electronic - General) >> WM 2X00IN Insulation Fault Finding (Cayenne S E-Hybrid) >> Taking Measurements >> Performing Measurement 8

Performing Measurement 8

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Preliminary work for measurement 8: 

Fig 1: Overview Of High-Voltage Connections For Power Electronics
G09933160Courtesy of PORSCHE CARS NORTH AMERICA, INC.
  1. -1-  = cable shoe on high-voltage line from PE to HV battery
  2. -2-  = 2 = HV connection from PE to air-conditioning compressor
  3. -3-  = 3-phase wiring to electric machine
  1. Unscrew and remove both cable shoes for high-voltage line to the high-voltage battery from the power electronics unit. → 279119 REMOVING AND INSTALLING POWER ELECTRONICS FOR HIGH-VOLTAGE SYSTEM

    Measurement 8.1: 

    Fig 2: Overview Front Wheel Housing Liner Trim Panel (Measurement 8.1)
    G09933161Courtesy of PORSCHE CARS NORTH AMERICA, INC.
  2. Hold both measuring tips of the insulation tester WE 1379  at each terminal shoe -1-  and at the insulation -2-  on both high-voltage lines from the power electronics to the high-voltage battery.
    Fig 3: Measuring Insulation Resistance At Cable Shoes
    G09933162Courtesy of PORSCHE CARS NORTH AMERICA, INC.
  3. Perform measurement 8.1.
    1. 3.1. Setpoint value of both lines: > 550 MOhm 

    Measurement 8.2: 

    Fig 4: Overview Front Wheel Housing Liner Trim Panel (Measurement 8.2)
    G09933163Courtesy of PORSCHE CARS NORTH AMERICA, INC.
  4. Connect high-voltage test adapter High-voltage test adapter HVA 280 WE 1585  to the power electronics unit (high-voltage connection for air-conditioning compressor). Leave the second connection on the test adapter open.
    Fig 5: Identifying High-Voltage Test Adapter
    G09933164Courtesy of PORSCHE CARS NORTH AMERICA, INC.
  5. Perform measurement 8.2.
    1. 5.1. Setpoint value: > 2.4 MOhm 
  6. Evaluate the test results  .
    1. 6.1. If the specified measured values from measurement 8.1 are not within the tolerance range and the specified measured values from measurement 8.2 are within the tolerance range:
      1. 6.1.1. Insulation fault in high-voltage line from power electronics to high-voltage battery.
      2. 6.1.2. Replace high-voltage line from power electronics to high-voltage battery following consultation with Technical Support. → Installing High-Voltage Line From Battery To Power Electronics
    2. 6.2. If the specified measured values from measurement 8.2 are not within the tolerance range and the specified measured values from measurement 8.1 are within the tolerance range, continue with measurement 8  .
    3. 6.3. The measured values from both measurements are not within  the tolerance range.
      1. 6.3.1. Repeat the measurements.
      2. 6.3.2. Check measuring equipment and repeat the measurements.
      3. 6.3.3. Contact Technical Support.
    4. 6.4. The measured values from both measurements are within  the tolerance range.
      1. 6.4.1. Repeat the measurements.
      2. 6.4.2. Check measuring equipment and repeat the measurements.
      3. 6.4.3. Contact Technical Support.
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