60079 pdf

Software Images icon An illustration of two photographs. Images Donate icon An illustration of a heart shape Donate Ellipses icon An illustration of text ellipses. EMBED for wordpress. Want more? Advanced embedding details, examples, and help! Publication date Usage CC0 1. Org Contributor Public. Org Language English. In order to promote public education and public safety, equal justice for all, a better informed citizenry, the rule of law, world trade and world peace, this legal document is hereby made available on a noncommercial basis, as it is the right of all humans to know and speak the laws that govern them.

Addeddate Identifier gov. There are no reviews yet. Refer to the Forward of the document for a complete listing of the technical changes between edition 7. Keywords: Ex Equipment and Ex Components intended for use in explosive atmospheres. IEC contains specific requirements for the construction and testing of electrical equipment with the type of protection flameproof enclosure "d", intended for use in explosive gas atmospheres.

This standard supplements and modifies the general requirements of IEC Where a requirement of this standard conflicts with a requirement of IEC , the requirement of this standard will take precedence.

This seventh edition cancels and replaces the sixth edition, published in , and constitutes a technical revision. The numerous changes are identified in the Foreward of the document. Keywords: flameproof enclosure "d", explosive gas atmospheres. IEC contains the specific requirements for the construction and testing of electrical equipment with pressurized enclosures, of type of protection "p", intended for use in explosi ve gas atmospheres or explosive dust atmospheres.

It also includes the requirements for pressurized enclosures containing a limited release of a flammable substance. Where a requirement of this standard conflicts with a requirement of IEC , the requirements of this standard take precedence.

This sixth edition cancels and replaces the fifth edition published in This sixth edition cancels and replaces the first edition of IEC published in This sixth edition constitutes a technical revision. The significance of changes between IEC , Edition 6. Keywords: electrical equipment with pressurized enclosures, type of protection "p", explosive gas atmospheres, explosive dust atmospheres. IEC contains specific requirements for the construction, testing and marking of electrical equipment, parts of electrical equipment and Ex components in the type of protection powder filling "q", intended for use in explosive gas atmospheres.

Where a requirement of this standard conflicts with a requirement of IEC , the requirement of this standard takes precedence. This standard applies to electrical equipment, parts of electrical equipment and Ex components with: - a rated supply current less than or equal to 16 A; - a rated supply voltage less than or equal to 1 V; - a rated power consumption less than or equal to 1 W.

This fourth edition cancels and replaces the third edition, published in , and constitutes a technical revision. Refer to the Foreword of the document for a complete listing of the technical changes between edition 4. Keywords: electrical equipment and Ex components in the type of protection powder filling "q". IEC specifies the requirements for the design, construction, testing and marking of Ex Equipment and Ex Components with type of protection liquid immersion "o" intended for use in explosive gas atmospheres.

For Level of Protection "ob", this standard applies where the rated voltage does not exceed 11 kV r. For Level of Protection "oc", this standard applies where the rated voltage does not exceed 15 kV r. This fourth edition cancels and replaces the third edition, published in The significant changes with respect to the previous edition are: - Edition 4 represents a major technical revision of the requirements for oil immersion "o" and should be considered as introducing all new requirements.

The normal "Table of Significant Changes" has not been included for this reason. Additional requirements have been introduced for the protective liquid. Keywords: Ex Equipment and Ex Components with type of protection liquid immersion "o".

IEC specifies the requirements for the design, construction, testing and marking of electrical equipment and Ex Components with type of protection increased safety "e" intended for use in explosive gas atmospheres. Level of Protection "eb" applies to equipment or Ex Components, including their connections, conductors, windings, lamps, and batteries; but not including semiconductors or electrolytic capacitors.

Level of Protection "ec" applies to equipment or Ex Components, including their connections, conductors, windings, lamps, and batteries; and also including semiconductors and electrolytic capacitors.

The requirements of this standard apply to both Levels of Protection unless otherwise stated. For Level of Protection "eb", this standard applies to electrical equipment where the rated voltage does not exceed 11 kV r.

For Level of Protection "ec", this standard applies to electrical equipment where the rated voltage does not exceed 15 kV r. This fifth edition cancels and replaces the fourth edition published in , and constitutes a technical revision.

Refer to the Foreword of the document for a complete listing of the technical changes between edition 5. Keywords: electrical equipment and Ex Components with type of protection increased safety "e" intended for use in explosive gas atmospheres.

IEC is concerned with the classification of areas where flammable gas or vapour hazards may arise and may then be used as a basis to support the proper design, construction, operation and maintenance of equipment for use in hazardous areas. It is intended to be applied where there may be an ignition hazard due to the presence of flammable gas or vapour, mixed with air, but it does not apply to: a mines susceptible to firedamp; b the processing and manufacture of explosives; c catastrophic failures or rare malfunctions which are beyond the concept of normality dealt with in this standard; d rooms used for medical purposes; e domestic premises; f where a hazard may arise due to the presence of combustible dusts or combustible flyings but the principles may be used in assessment of a hybrid mixture.

Flammable mists may form or be present at the same time as flammable vapour. In such case the strict application of the details in this document may not be appropriate. Flammable mists may also form when liquids not considered to be a hazard due to the high flash point are released under pressure.

In these cases the classifications and details given in this document do not apply. For the purpose of this document, an area is a three-dimensional region or space.

In any site, irrespective of size, there may be numerous sources of ignition apart from those associated with equipment. Appropriate precautions will be necessary to ensure safety in this context. This standard is applicable with judgement for other ignition sources but in some applications other safeguards may also need to be considered. This document does not take into account the consequences of ignition of an explosive atmosphere except where a zone is so small that if ignition did occur it would have negligible consequences.

This third edition of IEC cancels and replaces the second edition, published in , and constitutes a technical revision, see foreword for further details.

IEC 5 is concerned with the identification and classification of areas where explosive dust atmospheres and combustible dust layers are present, in order to permit the proper assessment of ignition sources in such areas.

In this standard, explosive dust atmospheres and combustible dust layers are treated separately. In Clause 4, area classification for explosive dusts clouds is described, with dust layers acting as one of the possible sources of release. In Clause 7 other general considerations for dust layers are described. The examples in this standard are based on a system of effective housekeeping being implemented in the plant to prevent dust layers from accumulating. Where effective housekeeping is not present, the area classification includes the possible formation of explosive dust clouds from dust layers.

The principles of this standard can also be followed when combustible fibres or flyings might cause a hazard. This standard is intended to be applied where there can be a risk due to the presence of explosive dust atmospheres or combustible dust layers under normal atmospher ic conditions. Please refer to the foreword of the document for a detailed listing of the significant technical changes from the previous edition. Keywords: explosive dust atmospheres, combustible dust layers, ignition hazards.

IEC specifies the construction and testing of intrinsically safe apparatus intended for use in an explosive atmosphere and for associated apparatus, which is intended for connection to intrinsically safe circuits which enter such atmospheres. This type of protection is applicable to electrical equipment in which the electrical circuits themselves are incapable of causing an explosion in the surrounding explosive atmospheres.

This standard is also applicable to electrical equipment or parts of electrical equipment located outside the explosive atmosphere or protected by another Type of Protection listed in IEC , where the intrinsic safety of the electrical circuits in the explosive atmosphere may depend upon the design and construction of such electrical equipment or parts of such electrical equipment.

The electrical circuits exposed to the explosive atmosphere are evaluated for use in such an atmosphere by applying this standard. The requirements for intrinsically safe systems are provided in IEC This standard supplements and modifies the general requirements of IEC , except as indicated in Table 1. Where a requirement of this standard conflicts with a requirement of IEC , the requirements of this standard shall take precedence. This sixth edition cancels and replaces the fifth edition of IEC published in , the first edition of IEC published in , and partially replaces the second edition of IEC published in and constitutes a full technical revision.

The significant changes with respect to the previous edition are listed below: - Inclusion of non-edition specific references to IEC IEC E gives requirements for the design, construction, assessment, verification and marking of rooms used to protect internal equipment by pressurization or artificial ventilation or both as applicable when located in an explosive gas atmosphere or combustible dust atmosphere hazardous area with or without an internal source of a flammable gas or vapour.

It also includes a room located in a non-hazardous area that has an internal source of release of a flammable gas or vapour. This document deals with rooms that are partially constructed in a manufacturer s facility and intended to have the final installation completed on-site, as well as rooms that are constructed completely on-site.

Rooms partially constructed in a manufacturer s facility may include third-party verification. For rooms built on-site, this document can be used by plant operators as a guide for assessment of those facilities. This document represents a major technical revision of the requirements for equipment protection by pressurized room p and artificially ventilated room v and should be considered as introducing all new requirements.

This second edition cancels and replaces the first edition published in This edition includes the following significant technical changes with respect to the previous edition: - modification of the title of this document to include artificially ventilated room v in addition to pressurized room p ; - addition of types of protection pb , pc , and vc and removal of types of protection px , py , pz and pv ; - definition of the differences between pressurization and artificial ventilation types of protection; - removal of protection of rooms with an inert gas or a flammable gas from the scope of this document; - addition of an informative annex to include examples of applications where types of protection pressurization or artificial ventilation or pressurization and artificial ventilation can be used and associated guidelines.

Additional information regarding the scope of this document can be found in Clause 1. Keywords: marking of rooms used to protect internal equipment, pressurized room p , artificially ventilated room v. IEC contains the specific requirements for the design, selection, erection and initial inspection of electrical installations in, or associated with, explosive atmospheres.

Where the equipment is required to meet other environmental conditions, for example, protection against ingress of water and resistance to corrosion, additional protection requirements may be necessary. The requirements of this standard apply only to the use of equipment under standard atmospheric conditions as defined in IEC For other conditions, additional precautions may be necessary, and the equipment should be certified for these other conditions.

For example, most flammable materials and many materials which are normally regarded as non-flammable might burn vigorously under conditions of oxygen enrichment. These requirements are in addition to the requirements for installations in non-hazardous areas. This standard applies to all electrical equipment including fixed, portable, transportable and personal, and installations, permanent or temporary.

No account is taken in this Standard of the toxic risks that are associated with flammable gases, liquids and dusts in concentrations that are usually very much less than the lower explosive limit.

In locations where personnel may be exposed to potentially toxic concentrations of flammable material, appropriate precautions should be taken. Such precautions are outside the scope of this Standard. This fifth edition cancels and replaces the fourth edition published in Refer to the document's Foreward for a listing of the specific revisions and additional Notes.

Key words: requirements for the design, selection, erection and initial inspection of electrical installations in explosive atmospheres.

This part of IEC applies to electrical equipment where the rated input voltage does not exceed 15 kV r. This fifth edition cancels and replaces the fourth edition, published in , and constitutes a technical revision. Refer to the Forward of the document for a complete listing of the technical changes between edition 5. Gives the general principles of protection by artificial ventilation. This publication has the status of a technical report. IEC applies to users and covers factors directly related to the inspection and maintenance of electrical installations within hazardous areas only, where the hazard may be caused by flammable gases, vapours, mists, dusts, fibres or flyings.

It does not include: - other fundamental installation and inspection requirements for electrical installations; - the verification of electrical equipment; - the repair and reclamation of explosion protected equipment see IEC This standard supplements the requirements of IEC In the case of dusts, fibres or flyings the level of housekeeping may influence the inspection and maintenance requirements.

This standard is intended to be applied where there can be a risk due to the presence of explosive gas or dust mixtures with air or combustible dust layers under normal atmospheric conditions.

It does not apply to: - underground mining areas, - dusts of explosives that do not require atmospheric oxygen for combustion, - pyrophoric substances. This fifth edition cancels and replaces the fourth edition published in and constitutes a technical revision.

The significant technical changes with respect to the previous edition are as follows: - Equipment specific inspection tables for luminaires, heating systems and motors have been added into Annex A to supplement the general protection concept tables; - Document has been updated to complement the changes made to IEC for initial inspection.

Keywords: inspection and maintenance of electrical installations within hazardous area, flammable gases, vapours, mists, dusts, fibres or flyings. IEC gives the specific requirements for the construction, testing and marking of electrical equipment, parts of electrical equipment and Ex components with the type of protection encapsulation "m" intended for use in explosive gas atmospheres or explosive dust atmospheres.

This part applies only for encapsulated electrical equipment, encapsulated parts of electrical equipment and encapsulat ed Ex components hereinafter always referred to as "m" equipment where the rated voltage does not exceed 11 kV.

The application of electrical equipment in atmospheres, which may contain explosive gas as well as combustible dust simultaneously, may require additional protective measures. This standard does not apply to dusts of explosives, which do not require atmospheric oxygen for combustion, or to pyrophoric substances.

This standard does not take account of any risk due to an emission of flammable or toxic gas from the dust.