• Measures insulation resistance between the Applied Part, to the Protective Earth terminal of
the instrument under test.
• Minimum: 10.0 MOhms.
4. Test E.L.C. 1 - Earth Leakage Current: Normal Condition
• Applicable to Class 1, Types B, BF and CF.
• Measures earth leakage current of the instrument under test connected to the mains power
supply; normal and reversed polarity using S2.
• For Type BF and CF equipments, measures with the AP/GND switch S3 open and closed.
• Maximum leakage current: 500 µA (Range: DC and AC up to 1 kHz).
5. Test E.L.C. 2 - Earth Leakage Current: S.F.C. Open Supply
• Applicable to Class 1, Types B, BF and CF.
• Measures earth leakage current of the instrument under test, with one open supply lead inter-
rupted (S1 = open); normal and reversed polarity using S2.
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