Siemens S5-135U/155U - Manual (Page 549)

B-3
System Manual
C79000-G8576-C199-06
B.2 Electrostatic Charging of Persons
Every person with a non-conductive connection to the electrical potential of
its surroundings can be charged electrostatically.
Figure B-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)
5 10 20 30 40 50 60 70 80 90 100
Relative air humidity in %
1
3
1 Synthetic material
2 Wool
3 Antistatic material, for
example, wood, or
concrete
2
Figure B-1 Electrostatic Voltages which can Build up on a Person
Charging
Guidelines for Handling Electrostatically-Sensitive Devices (ESD)