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IEC 60079-5 PDF

IEC CSV Standard | Electrical apparatus for explosive gas atmospheres – Part 5: Sand-filled apparatus. Apr 29, 1DV This standard part of IEC contains specific requirements for the construction, testing and marking of electrical equipment, parts. Sep 13, IS/IEC Explosive atmospheres, Part 5: Equipment protection by powder filling ‘q’. by Bureau of Indian Standards. Publication date.

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The test shail be conducted on an empty enclosure without the powder filling installed.

IS/IEC 60079-5: Explosive atmospheres, Part 5: Equipment protection by powder filling ‘q’

Fault conditions according to 4. When determining the required values for creepage and clearance, the voltage vs be increased by a factor of 1 1 in order to recognize the range of rated voltages in common us uppiy voltages given lue Ml 60709-5 table may. The pressure shall be applied for at least IDs. The effectiveness of the protection shall be confirmed by the test ice 5 1. These EPLs are introduced to enable an aiternatlye approach to current methods of sefecting Ex equipment.

Over-current devices shall have a voltage rating not less than that of the circuit and shall have a breaking capacity not less than 600799-5 prospective fault current of the circuit. For undated references, the latest edition of the referenced document including any amendments applies. This would make equipment selection easier and provide the ability to better apply a risk assessment approach, where appropriate.

When Ex components protected by powder filling “q” are intended to be mounted inside another enclosure complying with lECthis outer enclosure shall have a degree of protection of at least l? Where bare parts of energized circuits emerge from the coating, the comparative tracking index CTI in Table 2 applies to both insulation and conformal coating.

For this purpose, the electrode arrangement shown in Figure 60709-5 shall be used.

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The enclosure shall be marked in accordance with 6 a. Two separate test samples may be required. For the purpose of deciding whether a particular requirement of tfiis standard is complied with, the final value, observed or calculated expressing the result of a test, shall be rounded off in accordance with IS 2: Reference will also be included in the classification standards lEC and lEC This standard applies to electrical equipment, parts of electrical equipment and Ex components with: Equipment protection by increased safety “e” lEC 1Explosive atmospheres – Part 1 1: At the end of any water ingress tests, no water shall be visible inside the enclosure.

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NOTE 2 The restriction on the size of the gap is intended to reduce the escape of filling material. The system of designating these iev protection levels is as follows.

When determining the requiied values for distance, the voltage value in the table may be increased by a factor of 1 1 in order to recognize the range of rated voltages in common use. Copyright BIS has the copyright of all 600079-5 publications. A test voltage of 1 V d. O introduction This annex provides an explanation of the concept of a risk assessment metinod encompassing equipment protection levels EPLs.

Search the history of over billion web pages on the Internet. Equipment protection by atmospheres: As noted eafliei, nowhere in the I EC system of explosion protection Is there any account taken of the potential consequences of an eyplosiori, should it occur However, plant operators often make intuitive decisions on e.

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This standard supersedes IS Where integral fuses are used as protective devices, the fusing element shall be of the enclosed type, for example, in glass or ceramic. Conductive parts protruding from the insulation including soldered component pins shall not be considered as coated unless special measures have been applied to obtain an effective unbroken seal.

If kec filling materia! Prior to this, Ex ia was considered to be the only technique acceptable in zone 0. Disclosure to Promote the Right To Information Whereas the Parliament of India has set out to provide a practical regime 60079–5 right to information for citizens to secure access to information under the control of public authorities, in order to promote transparency and accountability in the working of every public authority, and whereas the attached publication of the Bureau iwc Indian Standards is of particular interest to the public, particularly disadvantaged communities and those engaged in the pursuit of education and knowledge, the attached public safety standard is made available to promote the timely dissemination of this information in an accurate manner to the public.

Siandards for which Inaian Standards also exist The corresponding Indian Standards which are to be substituted in their respective places are listed belovv’ along with their degree of equivalence for the editions indicated: The enclosure shall be marked in accordance with 6 b.

The maximum voltage between the parts shall be used to determine the distances according to Table 2. Where items other than fuses are used as protective devices for temperature limitation, the equipment shall be tested to verify that the- limiting temperature is not exceeded when those protective devices operate.

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Equipment protection by powder filling uec [ETD KOTH 1 It is acknowledged that the enclosure may need to be destroyed in order to determine tlie entrance of dust or water. In the past, she equipmenf selection standard has provided a solid link between the type of prolectton for the equipment and the zone in which the equipment can be used. Any of these markings may be repleced by technically equivalent information 7 Instructions All powder filled “q” equipment shall be accompanied by instructions as required by lECincluding the following additional particulars as a mintfrtum- – Where permitted by the manufacturer, details on the re-filling, re-sealing, and re-testing requirements tor powder filled “q” equipment that has been opened for repair.

The routine pressure test may be waived where the enclosure has passed a. Review of Indian Standards Amendments are issued to standards as the need arises on the basis of comments. If the degree of protection is IP55 or higher, the enclosure shall be provided with a breathing device.

Test sieves of perforated plates ISO Test sieving — Methods using test sieves of woven wire cloth and perforated metal plate Only the English language text of the international Standard has been retained while adopting it in this Jec Standard, and as such the page numbers given here are not the same as in lEC Standard. If the manufacturer does not provide a equired shoii circuit. Tests shall be carried out under normal equipment conditions, but may be effected without the filling material present.

For distance under a coating according to Table 2, the following conditions apply: This Indian Standard has been developed from Doc No.: NOTE The majority of the standard protection concepts bring 60079–5 within this equipment protection level. Acceptance of equipment info each zone is historically based on the type protection, in some cases the type cf protection may be divided into different levels of protection which ifc historically correlate to zones For example, intrinsic safety is divided into levels of protection ia and ib.