PCS Ex p – SIL 2 is a programmable logic panel that guarantees the Ex p pressurization in the transformer substation or electric cabinets automatically and controls the maintenance of the internal pressure. The use of a SIL2 processor ensures the high reliability.
The PCS Ex p – SIL2 logic consist on 4 units:
• Pressurization unit, in Ex d enclosure that guarantees the security conditions and the management of the automatic washing and maintenance cycles with PLC SIL 2;
• The safety devices Ex i;
• Purge and maintenance system and completed of an automatic valve;
• Shut-off system, indication and regulation of the pressure;
Safety and standard ATEX references:
• CEI EN 60079-2
• CEI EN 60079-14
• CEI EN 60079-7
• EN/IEC 60204-1
The use of PCS Ex p .SIL2 pressurization logic is designed to equip pressurized substations series CTS in cabinets with compatible electromechanical characteristics.
It is designed to work in Zone 1 and Zone 21 and Group I Category M2.