Siemens 620 appendix Electrostatic charging, Charging

Guidelines for handling electrostatic

A.2 Electrostatic charging

Charging

Anyone who is not conductively connected to the electrical potential of their surroundings can be electrostatically charged.

The maximum electrostatic voltage values which an operator can be charged with when contacting the materials stated in the illustration are shown in Fig. A–1. These values correspond to the specifications of IEC 801–2.

Voltage in kV
(kV)
	1	synthetic material
16
15	2	wool
14
13	3	antistatic material, e.g.
12
		wood or concrete
11	1
10
9
8
7
6
5
4	2
3
2	3
1
	5 10 20 30 40 50 60 70 80 90 100		rel. humidity
			in %

Figure A-1 Electrostatic voltages which an operator can be charged with

SIMATIC Box PC 620 Manual	A-3
A5E00131465-01