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Appendix 3 Standards for Leakage Current and Current Measurements
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Test electrode
Test clip, 10 cm
×
20 cm sheet of metallic foil
Condition of the
equipment to be
measured
Normal condition
Single fault condition
(1) Loss of protective earth connection
(2) Neutral open
(3) Each phase conductor faulted to earth
(4) Each phase conductor open
(5) Other faults
・
Toggle the phase to ground selector and measure.
・
Toggle the power polarity.
・
Measure accidental connections.
Measurement
Measure with a voltmeter.
・
Measured current: DC, true rms, peak
・
Variance: 2%
・
Input resistance: 1 M
Ω
min.
・
Input capacity: 200 nF
・
Frequency range: 15 Hz to 1 MHz (For cases of higher frequencies, a higher
range is used.)
・
CMRR: 40 dB min. (up to 1 MHz)
・
Input section: Floating input or differential input.
Point of measurement
Within the protective conductor
Measurement
Measurement taken by inserting an ammeter (with negligible impedance
(example: 0.5
Ω
) in series with the unit’s protective conductor.
(2) Protective conductor current measurement
Measure in a non-arithmetic manner. For details, refer to "Methods of measurement of touch-
current and protective conductor current (IEC/TR 60990 (1990-06))."
・
Audio, video and similar electronic apparatus - Safety requirements (IEC 60065(1998-07))
・
Applicable UL standards
:(
Examples
:
UL1419
、
UL3101-1
、
UL3111-1
、
etc.
)
Содержание 3155-01
Страница 1: ...LEAK CURRENT HiTESTER INSTRUCTION MANUAL 3155 01...
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Страница 27: ...7 1 2 3 4 5 6 7 8 9 10 11 12 13 14 A Chapter 2 Names and Functions of Parts...
Страница 45: ...25 1 2 3 4 5 6 7 8 9 10 11 12 13 14 A Chapter 4 Preparations for Measurement...
Страница 129: ...109 5 11 System Screen ME Equipment Example of a data unit printout Example of a details printout...
Страница 135: ...115 1 2 3 4 5 6 7 8 9 10 11 12 13 14 A Chapter 6 Ordinary Electrical Equipment Measurement Network C Installed...
Страница 189: ...169 6 7 System Screen for IEC TR 60990 Example of a data unit printout Example of a details printout...
Страница 195: ...175 1 2 3 4 5 6 7 8 9 10 11 12 13 14 A Chapter 7 Ordinary Electrical Equipment Measurement Network D Installed...
Страница 243: ...223 7 7 System Screen Universal Example of a data unit printout Example of a details printout...
Страница 314: ...294...
Страница 322: ...302 9 3 Accuracy Tables...
Страница 334: ...314 10 6 External Dimensions 292 2 110 2 212 2 115 8 2 10 6 External Dimensions...
Страница 335: ...315 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 APP Appendices...
Страница 362: ...INDEX 6 Index...
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