Siemens SIMATIC S7-1500 System Manual page 485

Technical specifications
16.1 Standards and Approvals
UKEX approval
According to EN 60079-7 (Explosive atmospheres – Part 7: Equipment protection by
increased safety "e") and EN IEC 60079-0 (Explosive atmospheres – Part 0: Equipment -
General requirements).
Special conditions in explosive atmospheres:
1. The equipment shall only be used in an area of not more than pollution degree 2, as defined
in EN 60664-1.
2. The equipment shall be installed in a suitable enclosure providing a degree of protection not
less than IP54 in accordance with EN IEC 60079-0. The ambient conditions must be taken
into consideration for use.
3. Provisions shall be made to prevent the rated voltage from being exceeded by transient
disturbances of more than 119 V.
IECEx approval
According to IEC 60079-15 (Explosive atmospheres - Part 15: Equipment protection by type of
protection "n") and IEC 60079-0 (Explosive atmospheres - Part 0: Equipment - General
requirements).
OR
According to IEC 60079-7 (Explosive atmospheres - Part 7: Equipment protection by increase
safety "e") and IEC 60079-0 (Explosive atmospheres - Part 0: Equipment - General
requirements).
Special conditions in hazardous areas:
1. The equipment shall only be used in an area of not more than pollution degree 2, as defined
in IEC 60664-1.
2. The equipment shall be installed in a suitable enclosure providing a degree of protection not
less than IP54 in accordance with EN 60079-15 or EN 60079-7. The ambient conditions
must be taken into consideration for use.
3. Provisions shall be made to prevent the rated voltage from being exceeded by transient
disturbances of more than 119 V.
484
S7-1500R/H redundant system
System Manual, 01/2024, A5E41814787-AF