Of S7-300 - Siemens SIMATIC RS 485 Manual

6.1.5 Specification of dielectric tests, protection class, degree of protection, and rated
voltage of S7-300
Test voltage
Proof of dielectric strength must be provided in the type test at a test voltage to IEC 61131-2:
Circuits with rated voltage V
or ground.
Protection class
Protection class I to IEC 60536, i.e., a protective conductor must be connected to the
mounting rail!
Protection against the ingress of foreign matter and water
● Degree of protection IP 20 according to IEC 60529, i.e., protection against contact with
No protection against the ingress of water.
RS 485 Repeater
Manual, 02/2011, A5E03382072-01
< 50 V
< 150 V
< 250 V
standard probes.
to other circuits Test voltage
e
500 VDC
2500 VDC
4000 VDC
Technical data
6.1 General technical data
35