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IN.4.4.1 The Insulation Monitoring Device will be tested by connecting a resistor between the Tractive System Measuring Points (EV.6.8), and several electrically conductive vehicle parts while the Tractive System is active.
IN.4.4.2 The test is passed if the IMD shuts down the Tractive System in 30 seconds or less at a fault resistance of 50% below the response value corresponding to 250 Ohm / Volt.