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

Technical specifications

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

9.5 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
The insulation is designed to fulfill the requirements of EN 61010-2-201 .
Location
Backplane bus to supply voltage L+
Pollution severity/overvoltage category according to IEC 61010-2-201
● Pollution degree 2
● Overvoltage category: II
Protection class according to IEC 61010-2-201
The ET 200SP HA distributed I/O system fulfills Safety Class III. Safety classes I and II may
apply to I/O modules. You can find additional information on this in the documentation of the I/
O modules. The grounding of the rail must meet the requirements for functional earth (FE).
Recommendation:
To ensure interference-free installation, the cable for the functional grounding should have a
cross-section > 6 mm
The installation location (e.g. enclosure, control cabinet) must have a protective conductor
connection that meets the standard to maintain protection class I.
Degree of protection IP20
IP20 degree of protection according to IEC 60529 for all modules of the distributed I/O system
ET 200SP HA, 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 ET 200SP HA distributed I/O system works with the nominal voltage that is 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.
146
.
2
Test
1500 V DC/1 min, type test
ET 200SP HA Distributed I/O system
System Manual, 08/2019, A5E39261167-AD