QuadTech Guardian 6100 Plus Instruction Manual page 82

2.4.7.1
A critical specification for IEC60601-1 standard safety testing is the actual measurement
device used in the testing. IEC60601-1 requires the use of a true RMS multi-meter with
a very specific load. The load simulates the impedance of the human body. Figure 2-8
illustrates the IEC60601-1 required test load.
Z =
R =
1
R =
2
C =
1
Other Product Safety Standards have a similar circuit that models the impedance of the
human body as illustrated in Figure 2-9.
UL 544NP
UL 544P
UL 1563
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Measurement Equipment
Input Impedance
10kΩ + 5%
Z
1kΩ + 5%
0.015µF + 5%
This figure is equivalent to
Figure 2-8: Required Test Load
6
7
Input
5
3
2
V
8
Meas
UL 544NP 4
1
+24V
6
7
Input
5
3
2
V
8
Meas
UL 544P 4
1
+24V
6
7
Input
5
3
2
V
8
Meas
UL 1563
4
1
+24V
Figure 2-9: Circuit Models for Impedance of Human Body
R
1
R C
2 1
MD in IEC60601-1 Leakage Circuit Diagrams
1.5k Ω
UL 2601
IEC 60601-1
0.15uF
UL 1950
1k Ω
UL 3101
UL 3111-1
EN 1010
10.2 Ω
0.15uF
UL 1950
500 Ω
0.45uF
150799 Rev A3
Measuring
V
Instrument
6
7
Input
5
3
2
V
8
Meas
UL 2601 4
1
+24V
6
7
Input
5
3
2
V
8
Meas
4
1
+24V
Operation
1k Ω
10k Ω
0.015uF
0.22uF
500 Ω
1.5k Ω
10k Ω
0.022uF