Electrostatic Discharge From Persons - Siemens SIMOTION C230-2 Equipment Manual

Directive for the Handling of Electrostatically Sensitive Devices (ESD)
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
(kV)
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
5 10 20 30 40 50 60 70 80 90 100
Fig. C-1
C-146
1
2
3
Electrostatic voltage that can accumulate in operating personnel
1 Synthetic material
2 Wool
3 Antistatic material such as
wood or concrete
Relative humidity in %
E Siemens AG, 2003 All rights reserved
SIMOTION C230-2, 04.2003 Edition