Siemens SIMATIC ET 200eco, Manual

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General technical data
5-7
ET 200eco Distributed I/O Station
A5E00158716-02
5.4 Specification of isolation tests, protection class,
type of protection and rated voltage for ET 200eco
Test voltage
The dielectric strength is verified during routine testing using the following test
voltages according to IEC 61131-2:
Circuits with a rated voltage of U
e
against
other circuits or ground
Test voltage
< 50 V 500 VDC
< 150 V 2500 VDC
< 250 V 4000 VDC
Degree of contamination/overvoltage category according to IEC 61131
•
Degree of contamination 2
•
Overvoltage category
– at U
N
= 24 VDC: II
Degree of protection IP 65
Degree of protection according to IEC 529
•
Protected against the ingress of dust and full touch protection
•
Jet water–proof from all directions to the case (the water must not cause
damage).
Degree of protection IP 66 and 67
Degree of protection according to IEC 529
•
Protected against the ingress of dust and full touch protection
•
IP 66: Protected for operation in heavy sea or under strong water jets (ingress
of water must be restricted to harmless quantities).
•
IP 67: Water–proof. Immersion test of the case in water under specified
conditions of pressure and duration (ingress of water must be restricted to
harmless quantities).