Information On Insulation, Protection Class, Degree Of Protection And Rated Voltage - Siemens SIMATIC ET 200SP HA System Manual

11.5 Information on insulation, protection class, degree of protection
and rated voltage
The information for the specific components takes precedence over the information in this
documentation. The statements in the product information always have priority over all other
information.
Insulation
Backplane bus
Backplane bus -
Supply voltage L+ -
Interface module -
Power bus -
Functional earth -
EN / IEC 60079-7, chapter 6.1 a): Insulation voltage specified by the basic system
1)
EN / IEC 60079-11, chapter 6.3.13 Insulation between intrinsically safe and non-intrinsically safe circuits: 1500 V x √2
2)
3) EN / IEC 60079-7, chapter 6.1 b) 1): 500 V x 170%
EN / IEC 60079-11, chapter 6.3.13 Insulation between intrinsically safe and grounded parts: 500 V x √2
4)
Degree of pollution / overvoltage category according to EN / IEC 61010-2-201
• Pollution degree 2
• Overvoltage category: II
Protection class according to EN / IEC 61010-2-201
The distributed I/O system complies with protection class III.
You can find additional information on this in the documentation of the I/O modules.
Degree of protection IP20
Degree of protection IP20 according to EN / IEC 60529 for all modules of the distributed I/O
system, i.e.:
• Protection against contact with standard probe
• Protection against foreign objects with diameters in excess of 12.5 mm
• No protection against water
Rated voltage for operation
The distributed I/O system operates with the rated voltage shown in the following table.
• Observe the tolerance range of the nominal voltage.
• When selecting the nominal voltage, note the maximum permissible supply voltage of each
module.
Modules for devices in a hazardous area
System Manual, 04/2021, A5E50165138-AA

11.5 Information on insulation, protection class, degree of protection and rated voltage

Supply voltage L+ Interface module
1500 V DC
-
-
-
-
2100 V DC
1) 2)
2100 V DC 2)
-
-
-
Technical specifications
Power bus Functional earth
2100 V DC 1500 V DC
2)
2100 V DC 2) 1500 V DC
850 V DC 707 V DC
3)
- 1500 V DC
- -
1)
1)
4)
1)
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