Siemens SINUMERIK 802D sl - C.2 Electrostatic Charging of Persons

C.2 Electrostatic charging of persons
Directive for handling electrostatically sensitive devices (ESD)
C-240
SINUMERIK 802D sl Instruction Manual (BA), 05/2005 Edition
6FC5 397-0CP10-1BA0
C.2 Electrostatic charging of persons
Charging
Any person connected to the electrical potential of the environment through a non-conduc-
tive connection can be charged electrostatically.
Figure 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 materials shown in the
figure. These values correspond with specifications to 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 humidity in %
1
3
1 synthetic material
2
wool
3
antistatic material such as wood
or concrete
2
Fig. C-1 Electrostatic voltages to which an operator can be charged