YE3P serie variabele frequentie snelheid reguleren lage spanning driefasen asynchrone motor<\/p>\n
Framenummer: H80-450 <\/span><\/p>\n Capaciteit: 0,55~1000kW <\/span><\/p>\n Aantal polen: 2~12P <\/span><\/p>\n Spanning: 1000v en lager<\/span><\/p>\n <\/p>\n According to the frequency and duration of the explosive dust environment, the explosive dust environment is divided into 3 zones.<\/span><\/span> When selecting a dust-type explosion-proof motor, the suitable motor can be determined according to the site characteristics corresponding to the explosion-proof grade. <\/span><\/span><\/p>\n Zone 20: An area in which a cloud of combustible dust in the air exists continuously or chronically or frequently for short periods in an explosive environment. <\/span><\/span><\/p>\n Examples of places that may produce 20 zones: <\/span><\/span><\/p>\n 1, dust container inside the place; <\/span><\/span><\/p>\n 2, storage tank, silo, etc., cyclone dust collector and filter; <\/span><\/span><\/p>\n 3, in addition to the belt and some parts of the chain conveyor dust transfer system; <\/span><\/span><\/p>\n 4, stirrer, grinder, dryer, loading equipment, etc. <\/span><\/span><\/p>\n Zone 21: A site that, during normal operation, is likely to occasionally exist in an explosive environment in the form of clouds of combustible dust in the air. <\/span><\/span><\/p>\n In most cases, the zone 21 range can be specified by an evaluation of the release source associated with the environment in which the explosive dust\/air mixture is formed. <\/span><\/span><\/p>\n Examples of places that may produce Zone 21: <\/span><\/span><\/p>\n 1, when there is explosive dust\/air mixture inside the dust container, in order to operate and frequently move or open the nearest entry and exit of the dust container outside; <\/span><\/span><\/p>\n 2, when no measures have been taken to prevent the formation of explosive dust\/air mixture, in the nearest loading and unloading points, feeding belts, sampling points, truck unloading stations, belt unloading points, etc., outside the dust container; <\/span><\/span><\/p>\n 3, if the dust accumulation and due to the process operation, the dust layer may be disturbed to form an explosive dust\/air mixture, the dust container outside the place; <\/span><\/span><\/p>\n (4) Places inside dust containers where explosive dust clouds may occur (but neither continuously, nor for a long period of time, nor often), such as the interior of the bin with a long cleaning interval (if only occasionally loaded and\/or discharged) and the accumulation side of the filter. <\/span><\/span><\/p>\n Zone 22: Places that are unlikely to exist in explosive environments in the form of airborne flammable dust clouds during normal operation, if only briefly. <\/span><\/span><\/p>\n Examples of places where 22 zones may be generated: <\/span><\/span><\/p>\n 1, the exhaust port from the dust bag filter vent hole, if once failure, may escape explosive dust\/air mixture.<\/span><\/span> Places near the equipment that are rarely opened, or places near the equipment that are prone to leaks due to dust ejections at higher ambient pressure according to experience;<\/span><\/span> Pneumatic equipment, flexible connections may be damaged in the vicinity of such places. <\/span><\/span><\/p>\n 2. Storage bags with lots of powdered products.<\/span><\/span> During operation, the storage bag may fail, causing dust diffusion. <\/span><\/span><\/p>\n (3) When measures are taken to prevent the formation of explosive dust\/air mixtures, places generally classified as zones 21 can be reduced to zones 22.<\/span><\/span> Such measures include exhaust ventilation.<\/span><\/span> Measures should be taken near (dust bag) loading and discharging points, feeding belts, sampling points, truck unloading stations, belt unloading points, etc. <\/span><\/span><\/p>\n 4, the formation of a controlled (clean) dust layer is likely to be disturbed to produce explosive dust\/air mixture.<\/span><\/span> Only if the dust layer is removed by cleaning prior to the formation of the hazardous dust\/air mixture, it is a non-hazardous site. <\/span><\/span><\/p>\n Zone 21 is the highest dust explosion-proof grade of the dust explosion-proof motor, which can be used instead of zone 22, and zone 20 is prohibited from entering the electrical appliance. <\/span><\/span><\/p>\n The difference between B and A in the dust explosion-proof mark: B means that the explosion-proof bonding surface of the motor is A straight port bonding surface, and A means that the explosion-proof bonding surface of the motor is a plane bonding surface, and the two can be interused. <\/span><\/span><\/p>\n These two dust explosion-proof marks are generally no difference in price, but in the selection of flameproof structural method is different, A21 and B21 have dust environment 21 zone explosion-proof motor use grade requirements.<\/span><\/span><\/p>\n <\/p>","protected":false},"excerpt":{"rendered":" YE3P serie variabele frequentie snelheid reguleren lage spanning driefasen asynchrone motor<\/p>\n Framenummer: H80-450 <\/span><\/p>\n Capaciteit: 0,55~1000kW <\/span><\/p>\n Aantal polen: 2~12P <\/span><\/p>\n Spanning: 1000v en lager<\/span><\/p>","protected":false},"featured_media":1077,"template":"","adweb_product_categories":[114],"adweb_product_tags":[299,295,296,298,117,297,293,294],"gallery":[1076],"order":null,"acf":[],"_links":{"self":[{"href":"https:\/\/www.tflequip.com\/nl\/wp-json\/wp\/v2\/adweb_products\/1075"}],"collection":[{"href":"https:\/\/www.tflequip.com\/nl\/wp-json\/wp\/v2\/adweb_products"}],"about":[{"href":"https:\/\/www.tflequip.com\/nl\/wp-json\/wp\/v2\/types\/products"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.tflequip.com\/nl\/wp-json\/wp\/v2\/media\/1077"}],"wp:attachment":[{"href":"https:\/\/www.tflequip.com\/nl\/wp-json\/wp\/v2\/media?parent=1075"}],"wp:term":[{"taxonomy":"adweb_product_cat","embeddable":true,"href":"https:\/\/www.tflequip.com\/nl\/wp-json\/wp\/v2\/adweb_product_categories?post=1075"},{"taxonomy":"adweb_product_tag","embeddable":true,"href":"https:\/\/www.tflequip.com\/nl\/wp-json\/wp\/v2\/adweb_product_tags?post=1075"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}The specific division standard of dust explosion-proof area<\/h2>\n