Electrostatic Charging Of Persons - Siemens SIMATIC S7-400 Reference Manual

Directive on handling electrostatic sensitive devices (ESD)
D.2 Electrostatic charging of persons
D.2

Electrostatic charging of persons

Electrostatic charging
Any person with a non-conductive connection to the electrical potential of its surroundings may
be exposed to electrostatic charge.
The figure shows the maximum electrostatic voltage which may build up on a person coming
into contact with the materials indicated. These values are in conformity with the specifications
of IEC 61000-4-2.
(kV)
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
Figure D-1
(1)
(2)
(3)
(4)
(5)
434
1
2
5 10 20 30 40 50 60 70 80 90 100
Electrostatic voltages which can build up on a person
Voltage in kV
Synthetic material
Wool
Antistatic materials, such as wood or concrete
Relative air humidity in %
3
4
5
Reference Manual, Ausgabe 11/2016, A5E00850736-08
S7-400 Automation System Module Data