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Guidelines for Handling Electrostatically-Sensitive Devices (ESD)
A.2
Electrostatic Charging of Persons
Charging
Every person with a non-conductive connection to the electrical potential of its
surroundings can be charged electrostatically.
Figure 7-1 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
(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
Figure 7-1 Electrostatic Voltages which can Build up on a Person
A-2
1
2
3
1
Synthetics
Wool
2
Antistatic material, for example,
3
wood or concrete
Relative air humidity in %
SIMATIC Rack PC IL 40, Getting Started
A5E00171493-02
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