
1.6 Types of Leakage Current Measurement
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A protective conductor current measurement measures the electric current that flows through a protective
earth conductor (grounding wire) during normal operating conditions.
Like Earth leakage current, class II equipment does not have a protective earth wire and therefore does
not require measurement of protective conductor current.
To measure the protective conductor current, place a resistor with a resistance so small as to be negligi-
ble in the protective earth wire circuit.
Protective conductor current measurement
Summary of Contents for ST5540
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Page 6: ...Contents iv Index i ...
Page 29: ...23 2 Chapter 2 Instrument Labels and Screens Instrument Labels and Screens Chapter 2 ...
Page 80: ...4 8 Changing the Measurement Method Auto Manual 74 ...
Page 121: ...115 8 9 7 Chapter 7 Instrument System Settings Instrument System Settings Chapter 7 ...
Page 144: ...7 14 Setting the Backlight 138 ...
Page 284: ...10 14 Measurement Networks 278 ...
Page 290: ...11 4 Instrument Disposal 284 ...
Page 320: ...Appendix4 External Dimensions A30 ...
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