C-3
ET 200L Distributed I/O Device
EWA-4NEB 780600902-05
C.2 Electrostatic Charging of Persons
Every person with a non-conductive connection to the electrical potential of
its surroundings can be electrostatically charged.
Figure C-1 shows you the maximum values for electrostatic voltages which
can build up on a person coming into contact with the materials indicated in
the figure. These values are in conformity with the specifications of
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 atmospheric
humidity in %
1
3
1 Synthetic material
2
Wool
3
Antistatic material, such as
wood or concrete
2
Figure C-1 Electrostatic Voltages which can Build up on a Person
Charging
Guidelines for Handling Electrostatically Sensitive Devices (ESD)
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