Stahl - Catalog - STAHL - #1201

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11/36 EEx d Enclosure System in Sheet Steel Flameproof Encapsulation Series 8225 General Catalogue 25.01.2007 11 Design and installation The design and installation of explosionprotected distribution and control boards having flameproof enclosures require considerable experience and careful consideration of relevant regulations in relation to the application data. Only thus are technically and economically satisfactory solutions, which combine a user-friendly design with a high degree of safety, possible. In addition to the Exregulations EN 50 014ff / DIN VDE 0171 and DIN VDE 0165, the general regulations, in particular DIN VDE 0100, DIN VDE 0113 and DIN VDE 0660 must all be observed in the assembly of distribution and control boards. Components Standard industrial electrical equipment can be built into flameproof enclosures. It is, however, subject to a 'type test' by a recognised testing station. R.STAHL has such certificates issued by PTB (Physikalisch Technische Bundesanstalt in Braunschweig) permitting the assembly of explosion-protected systems for all standard applications. 01373E00 01312E00 Control board 8220/.50 with EEx e connection chamber type 8125 Motor protection devices Motor protection devices which are used with EEx e "increased safety" motors must be specially designed and certified for that purpose by a recognised testing station. This is because the validity of this type of explosion protection under conditions of motor overload is dependent on the tripping characteristics of the relay. Our certificates cover many designs and makes of PTB-approved protection relays. Motor controller equipped with several motor starters, timer relay, control transformer, control fuses and current transformer for main motor current measurement. 00243E00 Type of protection "Intrinsic safety" Equipment with 'intrinsically safe' circuits certified as associated electrical equipment, can also be built into flameproof enclosures and can thus be installed in hazardous areas. Further, the certificate must always accompany customer's processed-out material. Additionally, special conditions apply to the location, wiring and terminals for i.s. equipment. Motor distribution box with contactors, motor protection relays, fuse links and a load switch with cover interlock. EEx d starter 8220/.50 with series 8125 EEx e connection box