What grade should be used for 0 types of zone explosion-proof lamps at gas stations and ethylene plants?
Classification of hazardous locations for electrical equipment for explosive gas atmospheres:0 area: the explosive gas environment for long time, the existence of places.Zone 1: where the explosive gas environment may occur during normal operation.2 zone: in normal operation, there is no explosive gas environment, if it occurs occasionally, and only a short time there.
Two, the applicability of explosion protection methods to dangerous sites:Serial number, explosion proof type code, national standard, explosion prevention measure, applicable area1 flameproof D GB3836.2 isolation exists for ignition source Zone1, Zone22 increased safety type E GB3836.3 tries to prevent ignition source Zone1, Zone23 intrinsically safe IA GB3836.4 limit ignition energy Zone0-2 intrinsically safe IB GB3836.4 limit ignition energy Zone1, Zone24 positive pressure type P, GB3836.5 dangerous material and point fire source, Zone1, Zone25 oil filled o GB3836.6 hazardous materials separated from point source, Zone1, Zone2 6, sand mold Q GB3836.7, dangerous material and ignition source, Zone1, Zone27 non sparking n GB3836.8, try to prevent ignition source Zone28 cast sealing type m GB3836.9 tries to prevent ignition source Zone1, Zone29 airtight h GB3836.10 manages to prevent the ignition of Zone1, Zone2So, with the intrinsically safe IICT6 zone 0 explosion proof lamp. 1, 2 categories generally use flameproof type, hydrogen, acetylene and so on, use IICT6, no, use IIBT6.
First of all, to understand the definition and classification of explosion rating, and its applicability.Classification, grouping and gradingElectrical equipment that does not cause ambient explosive conditions to ignite under specified conditions.Divided into two categories: class I: coal mine electrical equipment II: in addition to coal mines, underground, all other explosive gas, electrical equipmentThe class II can be divided into II A, II B and II C, and the equipment of Mark II B can be applied to the use of II A equipment; II C can be applied to the conditions of II A and II B.Temperature class explosive atmospheres electrical equipment is divided into T1-T6 groups T1, T2, T3, T4, T5, T6 according to their highest surface temperatures450, 300, 200, 135, 100, 85
