Siemens S7-400PLC Specifikace stáhnout pdf (Strana 36)

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General specifications

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

S7-400 Automation System Module Data

36 Reference Manual, Edition 09/2009, A5E00850736-06

1.5 Information on insulation tests, protection class and degree of

protection

Test voltages

Insulation resistance was demonstrated in routine testing with the following test voltages in

accordance with IEC 61131-2:

Table 1- 11 Test voltages

Circuits with nominal voltage U

to other circuits or ground Test voltage

0 V < U

≤ 50 V 350 V

50 V < U

≤ 100 V 700 V

100 V < U

≤ 150 V 1300 V

150 V < U

≤ 300 V 2200 V

Protection class

Protection class I in compliance with IEC 61140; this means that a grounding terminal to the

power supply module is required!

Protection against the ingress of foreign matter and water

Degree of protection IP 20 to IEC 60529. In other words, there is protection against contact

with standard probes.

There is no protection against the ingress of water.

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