Information On Insulation Tests, Protection Class, Degree Of Protection And Rated Voltage - Siemens SIMATIC S7-1500 System Manual

Technical data

17.6 Information on insulation tests, protection class, degree of protection and rated voltage

Use in dry rooms
SIMATIC Drive Controllers are designed and tested for relative humidity in the range of 5 to
95%.
Note
Use in low humidity (< 5%)
If you use the SIMATIC Drive Controller in a humidity < 5%, the risk of damage due to electric
fields or electrostatic discharge increases.
In very dry environments, appropriate precautions (ETUC measures) are particularly
important to prevent equipment damage. Be sure to observe the ETUC instructions in the
section General Safety Instructions (Page 17) as well as the installation instructions in the
section Protective conductor and equipotential bonding, functional grounding (Page 131).
17.6 Information on insulation tests, protection class, degree of
protection and rated voltage
Insulation
The insulation is designed in accordance with the requirements of EN 61131-2: 2007.
Note
Galvanic isolation with 707 V DC (Type Test) is tested for modules with 24 V DC supply
voltage (SELV/PELV).
Pollution degree
The SIMATIC Drive Controller is designed for pollution degree 2 in accordance with EN 61800-
5.
This means that the components must be protected from conductive contamination, for
example, by installing them in a control cabinet with degree of protection IP54 pursuant to
IEC 60529 or Type 12 pursuant to NEMA 250. If the occurrence of conductive contamination
can be ruled out, a correspondingly lower degree of protection for the control cabinet is
permitted.
Protection class
Protection class of the SIMATIC Drive
Controllers
Protection class III
356
Note
Protection class III equipment may only be connected to
SELV or PELV current sources.
System Manual, 11/2023, A5E46600094-AD
SIMATIC Drive Controller