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Electronical performance electrical properties 6.1 Contact Being measured at 1 KHz small current 50mΩ max. Resistance contact resistance meter. Contact resistance measured at 1kHz small current. 50 milliohms or less. 6.2 Measurements shall be made following application of DC500V potential Insulation across terminals and across terminals 100MΩ min. Resistance and frame for 1 minute. Insulation impedance between the terminals and terminals and frame DC 500 V 100 megohms minimum. Under the conditions, measured for 1 minute.