Directive for the Handling of Electrostatically Sensitive Devices (ESD)
C-146
E Siemens AG, 2003 All rights reserved
SIMOTION C230-2, 04.2003 Edition
C.2 Electrostatic discharge from persons
Accumulating an electrostatic charge
Anyone who is not conductively connected to the electrical potential of their envi-
ronment can accumulate an electrostatic charge.
Fig. C-1 indicates the maximum electrostatic voltages that can accumulate in a
person who is operating equipment when he/she comes into contact with the mate-
rials shown in the Figure. These voltages comply with the data in IEC 801-2.
Voltage in kV
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
(kV)
510
20 30 40 50 60 70 80 90 100
Relative humidity in %
1
3
1 Synthetic material
2
Wool
3
Antistatic material such as
wood or concrete
2
Fig. C-1 Electrostatic voltage that can accumulate in operating personnel
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