ATEX GENERAL CATALOGUE
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ATEX GENERAL C ATALOGUE

electrical solutions

Scame: a growing group IN LESS THAN FIFTY YEARS W E H A V E B U I LT A N INDUSTRIAL BUSINESS THAT HAS ALWAYS PRESERVED THE SPIRIT OF ITS ORIGINS

Scame was founded amidst the enthusiasm of the Italian economic boom of the 60's and has always pursued its reason for being in thriving by improving. Today it is an international industrial group of about 800 people employed in 18 subsidiary and associated companies operating under the parent company headquartered in Parre (Bergamo) in Alta Valle Seriana. Scame has a capillary presence throughout Italy with its own sales agencies and operates worldwide with branches and loyal distributors.

electrical solutions Parre (Bergamo) Czech Republic

United Kingdom

Technical and sales service Spine e prese per uso domestico SEND AN E-MAIL TO THE ADDRESS infotech@scame.com AND YOU’LL RECEIVE THE ANSWERS TO ALL YOUR QUESTIONS ABOUT TECHNICAL ASPECTS, INSTALLATION AND CONFORMITY STANDARDS .

The Scame technical information centre is able to promptly provide clear and complete answers to all your questions regarding the Scame products. The leading distributors of electrical material, with the support of our sales agencies and technical promoters, represent an additional capillary reference network. Information and updates can be found in the Info-point section of the internet site and in the newsletter sent periodically to the registered users.

ADVANCE-GRP[GD] Series page 18 OPTIMA-EX[GD] Series page 26 ISOLATORS-EX[GD] Series page 30 ZENITH-P Series page 36 UNION-EX Series page 54

ADVANCE-GRP[EX] Series page 80 OPTIMA-EX Series page 88 ISOLATORS-EX Series page 92 GAS&DUST ALUBOX-EX Series page 104

Guide to the ATEX directives 1. INTRODUCTION What is ATEX? “ATEX” is the acronym for “ATmosphere EXplosive”, i.e., explosive atmosphere. An explosive atmosphere is a mixture of flammable gases, vapours, mists or dusts with air, under specific atmospheric conditions in which, after ignition has occurred, combustion propagates to the flammable mixture. In order for a potentially explosive atmosphere to form, the flammable substances must be present in a certain concentration. If the concentration is too low (lean mixture) or too high (rich mixture), no explosion occurs; instead there is just...

2. ATEX DIRECTIVE 94/9/EC: EQUIPMENT The ATEX Directive has been effective throughout the European Union since 1 July 2003, replacing the various existing national and European legislations regarding explosive atmospheres; after that date it has been possible to market only those products conforming to the directive and supplied with the ATEX CE marking and EC declaration of conformity. It applies to all the electrical and mechanical equipment intended for use in explosion hazard areas, ranking among the directives that allow free trade of the goods and define the essential safety...

Guide to the ATEX directives MARKING The products must be equipped with the appropriate identification plate which must have, in addition to the CE marking, the specific marking of explosive protection (Epsilonx, in the hexagon) followed by the group (I or II) and category; for group II, the letter G is added for equipment for Gas while equipment for dust is identified by the letter D (Dust). In addition to the data required by the ATEX Directive, the plate must also indicate the type of protection as provided for by the standard and the information useful for correct identification and use...

Conformity mark For categories 1 and 2 it must be followed by the number of the notified body (*) Specific marking of explosive protection Equipment group I: electrical equipment for mines II: electrical equipment for surface installations Product category 1 for category 1 2 for category 2 3 for category 3 Type of explosive atmosphere (*) Number (4-digit number) of the notified body responsible for ATEX company monitoring (for example: the number 0051 corresponds to IMQ, the number 0722 corresponds to CESI, etc.). Prefix of the types of protection for electrical equipment Type of protection...

Guide to the ATEX directives (follow) Temperature class = maximum temperature that the electrical equipment can reach Variants Temperature class (Group II): T1 = 450°C T2 = 300°C T3 = 200°C T4 = 130°C T5 = 100°C T6 = 85°C Gas equipment protection level (EPL): Ga: very high (suited for zone 0) Gb: high (suited for zone 1) Gc: increased (suited for zone 2) DUST (SPECIFIC INFORMATION) Type of production applied Types of protection for dust: - “ta”, “tb” or “tc”: protection by enclosure - “ia”, “ib” or “ic”: intrinsic safety protection - “ma”, “mb” o “mc”: protection with encapsulation - “px”...

REFERENCE STANDARDS FOR ELECTRICAL EQUIPMENT The list below specifies the primary standards applicable for the construction and certification of the equipment, subdivided for gas and dust. General requirements Construction and testing of flameproof enclosures “d” for electrical equipment Electrical equipment, type of protection “p” Electrical equipment with type of protection “n” ELECTRICAL EQUIPMENT FOR DUST General requirements for equipment for use in atmospheres with the presence of gas and dust. Protection by means of intrinsic safety “i” Note: Always check the validity of the current...

1 ATEX-IECEx [ II 2 GD ] Zone 1 (Gb) Zone 2 (Gc) Zone 21 (Db) Zone 22 (Dc)

ADVANCE-GRP[GD] Series [ ATEX-IECEx ] II 2 GD SWITCHED INTERLOCKED SOCKET OUTLETS REFERENCE STANDARDS ATEX IECEx IEC/EN 60079-0 Electrical apparatus for use in the presence of combustible dust. ATEX IECEx ATEX IECEx Part 0: General requirements. IEC/EN 60079-1 Explosive Atmospheres. Part 1: equipment protection by flameproof enclosures “d IEC/EN 60079-31 Electrical apparatus for use in the presence of combustible dust. Part 31: Protection by enclosures 'tD'. ATEX IECEx VERSIONS WITH MECHANICAL INTERLOCK IEC/EN 60079-7 Explosive Atmospheres. Part 7: equipment protection by increased safety...