Subscriber calling device PCV "Trombon SORS-AVU" has an explosion-proof version and is designed to make a call to the dispatcher console "Trombon SORS-PD" and organise two-way voice communication with him. PCV "Trombon SORS-AVU" has explosion protection of the type "flameproof enclosure "d"" and has explosion protection marking according to GOST 31610.0-2014 (IEC 60079-0:2011) 1Ex d IIC T6 Gb / Ex tb IIIC T85°C Db. The device refers to explosion-protected electrical equipment of groups II, III according to GOST 31610.0-2014 (IEC 60079-0:2011) and is intended for use in hazardous areas in accordance with the specified explosion protection marking and climatic version.
Trombon SORS-AVU is designed for operation at ambient temperature from minus 0°C to plus +40°C and atmospheric pressure from 84 to 106.7 kPa. The device has climatic execution UHL1 according to GOST 15150-69 and degree of protection of the shell - IP66 according to GOST 14254.
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