ATEX & IECEx
43Pages

ATEX & IECEx CATALOG Rev. 00/2021 GIOVENZANA INTERNATIONAL B.V. reserves the right to modify all the technical and functional characteristics of the products illustrated in the catalog without prior notice, as this information is intended for general knowledge only and is not legally binding. All images are included for illustrative purposes. Products are subject to change. The most updated version of this catalog can be downloaded from the website: www.giovenzana.com

SWITCH DISCONNECTORS » SE, SQ Series 1.1 - What do we know today about explosion hazards in the workplace? 1.2 - Technological response to ignition prevention 1.3 - IEC ZONE SYSTEM (Ex constructions) 1.5 - One certification scheme per Area 1.6 - IEC Zone System: modes of protection for electrical and non-electrical products 1.10 - The ATEX DIRECTIVE applied to industrial production ROTARY GEAR LIMIT SWITCHES » FGR2 Ex Series II 3G Ex dc ec IIB T5 Gc - II 2D Ex tb IIIC T85°C Db Zone 2 (Gas) - Zone 21 (Dust) Tamb = -20°C .. +70°C IP65 PRE-WIRED THERMOPLASTIC LIMIT SWITCHES » FCT Ex Series II...

ATEX - IECEx - EAC Ex - INMETRO AND UL HAZLOC CERTIFIED COMPONENTS is one of the world's leading suppliers of Giovenzana International B.V. develops, implements projects and builds safety systems and solutions, equipment industrial safety technology. and components. The aim is to protect people and the environment through safe and certified solutions. We develop tailor-made technical solutions thanks to our design capability and production flexibility. Our manufactured and assembled in our production warehouses in Italy and Hungary. Also for Hazardous Areas, Giovenzana offers a continuously...

1 - EQUIPMENT FOR HAZARDOUS LOCATIONS 1.1 - WHAT DO WE KNOW TODAY ABOUT EXPLOSION HAZARDS IN THE WORKPLACE? In the workplace, worker safety is a right that drives us to use all state-of-the-art means, with the aim of exposing the worker to the minimum acceptable risk to his safety and health. The risk assessment of each task involves many different aspects, and the risk of exposure to potentially explosive atmospheres must be analysed. What we know today about explosion hazards is supported by the application of the prevention and protection schemes that international technical standards...

Do flammable substances always create an explosive atmosphere? The right recipe for creating an explosive atmosphere depends on two main ingredients: - the percentage of flammable substance; - the percentage of oxygen. Explosive atmospheres in the workplace are said to exist when the substance is released into the environment under "normal" conditions of pressure and atmosphere, i.e. at atmospheric pressure and in the presence of a percentage of oxygen close to 20-21%. The ingredient "flammable substance" will therefore be the variable that will give us the explosive atmosphere, in relation...

Ignition sources In an electrical or non-electrical product, the events which may provide the initiating energy are referred to as "potential ignition sources" and are listed below, as given in ISO IEC 80079-36 and EN 1127-1. Potential ignition sources Potential ignition sources Electromagnetic waves (radio frequency) from 104 Hz to 3 × 1012 Hz Electromagnetic waves from 3 × 1011 Hz to 3 × 1015 Hz Sparks of mechanical origin Ionising radiation Electric sparks / electric arc Ultrasonics Stray currents and protection against cathodic corrosion Static electricity Adiabatic compressions and...

1.2 - THE TECHNICAL RESPONSE TO IGNITION PREVENTION The effects of the explosion When one thinks of the effects of an explosion, one thinks of a violent development with high levels of damage to property and people. The effects of an explosion can be measured in terms of the increase in pressure and the speed at which the pressure increases. The phenomenon leads to high pressure increases in a very short time, typically in the order of a few milliseconds. This has fatal effects on humans, for whom the increase in pressure causes irreversible damage to internal organs, and effects on...

1.3 - IEC ZONE SYSTEM (EX CONSTRUCTION) SUBSTANCES CLASSIFICATION The IEC system requires the subdivision of areas into hazardous ZONES with different probability that explosive atmosphere is present and requires to determine their extent (volume of the zone). The equipment permitted will be that compatible with the type of zone, which must be installed in such a way as not to impair the technique on which protection against ignition depends. The manufacturer of equipment shall ensure that it is designed and constructed to prevent ignition in the zone for which he declares that the product...

HAZARDOUS AREAS CLASSIFICATION TEMPERATURE CLASS SELF-IGNITION TEMPERATURE RANGE (AIT) Areas other than mines are classified as follows. GASES AND VAPOURS CLASSIFICATION (IEC 60079-10-1) Examples of Substances according to IEC 60079 classification WHEAT FLOUR A place in which an explosive atmosphere consisting of a mixture of air and flammable substances in the form of gas, vapour or mist is not likely to occur in normal operation and, if it does occur, will persist for a short period only (< 10 hours/year). A place in which an explosive atmosphere consisting of a mixture of air and...

EQUIPMENT CLASSIFICATION Classification of equipment according to level of protection Equipment is classified according to: - Group of substances for which it is designed; - Temperature class (only for Gases); - Equipment protection level (EPL). IEC 60079 assigns an electrical construction a level of protection, defined as "Equipment Protection Level (EPL)", depending on whether it is constructed so as not to ignite an explosive atmosphere under various operating conditions of the equipment. Equipment groups PROTECTION LEVELS (EPL) ACCORDING TO IEC 60079 CLASSIFICATION NON-CONDUCTIVE DUST...

Choice in relation to hazardous area Equipment selection in relation to T class (Gas) PROTECTION LEVELS SURFACE GASES GROUPS IIA, IIB, IIC ZONE 0 GASES AND VAPOURS COMBUSTIBLE DUSTS GROUPS IIIA, IIIB, IIIC MAXIMUM SURFACE TEMPERATURE EQUIPMENT Ga TEMPERATURE MAX SURFACE CLASSES TEMPERATURE For dusts refer to the standard because there are rules for the selection of equipment involving both dust ignition temperatures (Tcl and Tl).  Choice of equipment in relation to the group DUST GROUP EQUIPMENT IIC GROUPING SURFACE GASES GROUPS IIA, IIB, IIC COMBUSTIBLE DUSTS GROUPS IIIA, IIIB, IIIC AREAS...