Siemens SIMATIC KTP400 Basic Operating Instructions Manual page 100

Appendix
A.1 ESD guideline
Electrostatic charging
CAUTION
Electrostatic charging
ESDs may be destroyed by voltages far below the level perceived by human beings.
Voltages of this kind develop when a component or an assembly is touched by a person
who is not grounded against static electricity. Usually, it is unlikely that damage to an ESD
as a result of overvoltage is detected immediately but may become apparent only after a
longer period of operation.
Prevent electrostatic charging of your body before you touch the ESD!
Anyone who is not connected to the electrical potential of their surroundings is subjected to
electrostatic charging.
The following figure indicates the maximum electrostatic charge anyone is subjected to when
coming into contact with the materials shown. These values correspond with specifications to
IEC 801-2.
①
②
③
100
Synthetic materials
Wool
Antistatic materials such as wood or concrete
KTP400 Basic, KTP600 Basic, KTP1000 Basic, TP1500 Basic
Operating Instructions, 08/2008, A5E01075587-01