Information On Insulation Tests, Protection Class And Degree Of Protection - Siemens SIMATIC S7-400 Reference Manual

General specifications

1.5 Information on insulation tests, protection class and degree of protection

1.5 Information on insulation tests, protection class and degree of
protection
Test voltages
Where required, insulation resistance is proved in routine testing with test voltages in
accordance with IEC 61131-2.
Protection class
Protection class I in accordance with IEC 61140, i.e. protective conductor connection to power
module required!
Protection from foreign objects and water
IP20 in accordance with IEC 60529, i.e. protection against contact with standard probes.
There is no water ingress protection.
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S7-400 Automation System Module Data
Reference Manual, Ausgabe 11/2016, A5E00850736-08