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Dewei offers the enclosure series EJPZ in different sizes and designs.All systems are available for the use in hazardous area ( and Zone2/22) in the protection type over pressure. Variants can varydepending on the specific application. The enclosure series EJPZallowed the customer to bring his non ex- components directly inthe hazardous area.
Type EJPZ Series Explosion-proof Pressurized Distribution Cabinetsconsists in pressurized enclosure and Ex p control unit. Thepressurized enclosure consists in a cabinet with different enclosuresizes as specified in the manufacturer document and apressurization system as associated apparatus. The pressurizedenclosure isof high quality carbon steel and stainless steel ,Usingthe sealing strip. The Ex p control unit type will be used to controland verify the minimum over pressure, to perform the purging of the enclosure, to control the purging andpressurization alarm.
The control unit are fitted various devices including an airfilter/reducing valve, mechanical pressure gauge, flow control valve,pressure sensor, The timing device， Exd e light fittings, Ex mbsolenoid valve and Exd control station which have standardelectrical components. The combined main enclosure and Exdcontrol station form the purge control unit.
The equipment also comprises a pressure relief valve assembly,incorporating orifice plates, which determine purging gas flow rateand an over pressure protection. Purging gas exits the unit via astainless steel wire mesh spark arrestor.
The allowed protective gas is: nitrogen, argon, carbon dioxide,helium or instrumental compressed air as specified in the markingplate. There is no internal source of flammable gas release allowed.Multiple pressurized enclosures up to 10 m3 of total internal volumeare also possible as specified in the manufacturer document.
Service hotline：
0523-88317000 88318288
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Technical Parameter
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EJPZ enclosure sizes and maximum power dissipations
The enclosures may also be manufactured to intermediate sizes. This assumes that any given dimension is notlarger than the respective dimension of the largest enclosure or smaller than the respective dimension of thesmallest enclosure. The power rating applied to a enclosures of intermediate size is that of the next smallestenclosure.
The terminal and components may be used in specified combinations subject to the calculation of maximumdissipated power and the conditions of certification listed. The maximum dissipated powerfor each enclosure isdetailed above.
The enclosures can be drilled and taped with the maximum size and maximum number of holes as specified in themanufacturer documents for the use with separately certified cable glands or blanking plugs. Each enclosure isprovided with an internal earthing certified terminal or earthing point. Metal enclosures are provided with anexternal earthing point.
Commercial electrical apparatus of all sorts can be fitted into pressurized cabinets.
Electrical interlocking device, to reach the stipulated time of ventilation to automatic transmission, andlow-pressure automatic alarm and automatic gas supplementary device and high - pressure self closingfunction.The sealing performance is reliable, the shell adopts the multiple seal protection, and the holding time is long, andthe operation cost is saved. When the user needs to be equipped with cleanor inert gas source.This product requires steel pipe or cable wiring.
Modular building system allows to realize customized volume up to 10m3. One of the system that offers thewidest possibilities on the market. A single system of pressurization and washing can managemultiple modules in series.
New gasket technology minimizes the dispersion of inactive gas, increasing efficiency of pressurized systemand reduce operating costsEJPZ pressurized panels, because of the continuous influx of purging gas, prevents the build up of heat andmoisture and provide a greater life cycle of the equipment.
Quick access: easy opening and maintenance, when the doors open the system disconnects; whenthe doorsare closed again, after the washing cycle, the system will start again automatically.
The configurations for electrical components on the control panel of the control box cover andinsidethe control box enclosure can be customized to meet the requirement of customers.
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Order Specifications Table
Please refer to the below table for ordering. If you need more information, please contact our sales representativefor assistance.
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