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5.4 Enclosure Leakage Current Measurement Mode (ME Equipment)
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5.4.1 Enclosure Leakage Current Measurement Mode
Condition of the equipment to be measured
Power source polarity
Contact condition
Normal condition
Normal polarity
Between parts of the enclosure
Between the enclosure and the earth
Reverse polarity
Between parts of the enclosure
Between the enclosure and the earth
Single fault condition
Open power lead
Normal polarity
Between parts of the enclosure
Between the enclosure and the earth
Reverse polarity
Between parts of the enclosure
Between the enclosure and the earth
Open ground
Normal polarity
Between parts of the enclosure
Between the enclosure and the earth
Reverse polarity
Between parts of the enclosure
Between the enclosure and the earth
110% voltage applied
(normal polarity)
Normal polarity
Between parts of the enclosure
Between the enclosure and the earth
Reverse polarity
Between parts of the enclosure
Between the enclosure and the earth
110% voltage applied
(reverse polarity)
Normal polarity
Between parts of the enclosure
Between the enclosure and the earth
Reverse polarity
Between parts of the enclosure
Between the enclosure and the earth
NOTE
5.4 Enclosure Leakage Current Measurement Mode (ME
Equipment)
The measurement of enclosure leakage current for medical electrical
equipment is performed in two places: between the enclosure and the earth,
and between parts of the enclosure. With class
equipment, the enclosure is
each part of the enclosure which is not protectively earthed.
Plug the power cord of the equipment to be measured into the auxiliary power
socket for the 3155, and make a measurement by touching either the 9170
TEST LEAD or 9195 ENCLOSURE PROBE to the test point.
The following combinations are measured under the enclosure leakage current
measurement.
The measurement current is set to "AC+DC rms."
For the concept of leakage current in medical electrical equipment and its
wiring when using the 3155, refer to Appendix 2.1, "IEC 60601-1 (1988-12) +
am1 (1991-11) + am2 (1995-03)."
・
In the application of 110% voltage, 110% voltage is applied externally with
the 3155 set to the normal condition. Because the allowable value setting is
quite different from that of conventional normal condition settings, care is
necessary when making this setting.
・
When making an external application of voltage, the optional 9196 APPLY
UNIT is necessary. (Other voltage application units can also be used to
make measurements.)
Summary of Contents for 3155-01
Page 1: ...LEAK CURRENT HiTESTER INSTRUCTION MANUAL 3155 01...
Page 2: ......
Page 12: ......
Page 27: ...7 1 2 3 4 5 6 7 8 9 10 11 12 13 14 A Chapter 2 Names and Functions of Parts...
Page 45: ...25 1 2 3 4 5 6 7 8 9 10 11 12 13 14 A Chapter 4 Preparations for Measurement...
Page 243: ...223 7 7 System Screen Universal Example of a data unit printout Example of a details printout...
Page 314: ...294...
Page 322: ...302 9 3 Accuracy Tables...
Page 334: ...314 10 6 External Dimensions 292 2 110 2 212 2 115 8 2 10 6 External Dimensions...
Page 335: ...315 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 APP Appendices...
Page 362: ...INDEX 6 Index...
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