10.14 Measurement Networks
272
Network C is a measurement network that complies with IEC 60990.
Network C complies with the following standards :
(1) Methods of measurement of touch current and protective conductor current
(IEC 60990:1999)
Filter setting for human body impedance network (OFF), network compatible
with perception/reaction (ON1 (U1,U2)), and network compatible with abandon-
ment (ON2 (U1,U3))
When network C is selected, the instrument can also be used in compliance with
the following standards on testing leakage current :
(2) Safety requirements for electrical equipment for measurement, control, and
laboratory use(IEC 61010-1:2010)
(3) Safety of information technology equipment
(IEC 60950-1:2005)
Network C (for IEC 60990)
Ｖ
1.5 k
±
1%
0.22 F
± 2%
500
±
1%
0.0062 F
± 2%
20 k
±
1%
0.0091 F
± 2%
Ｖ
Ｖ
0.022 F
± 2%
0.22 F
± 2%
1.5 k
±
1%
500
± 1%
1.5 k
±
1%
0.22 F
± 2%
500
± 1%
10 k
± 1%
Network compatible with
perception/reaction(ON1(U2))
Human body impedance network(OFF)
Network compatible with
abandonment(ON2(U3))
10 k ± 1%
0.022 F
± 2%
1.5 k
± 1%
0.22 F
± 2%
500
± 1%
10 k
± 1%
Ｖ
Network compatible with perception/
reaction(ON1(U1))
Ｖ
1.5 k
±
1%
0.22 F
± 2%
500
±
1%
0.0062 F
± 2%
20 k
± 1%
0.0091 F
± 2%
Network compatible with
abandonment(ON2(U1))
10 k± 1%
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