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 number of significant places retained in the rounded off value should be the same as thai of the specified value in this standard.

Reference will also be included in the classification 6009-5 lEC and lEC Equipment protection by atmospheres: The maximum gap of an enclosure protected by powder filling “q” shall be at least 0,1 mm smaller than the specified smallest dimension of the filling material.

Over-current devices shall have a voltage rating not less than that of the circuit and shall have a breaking capacity not less than the prospective fault current of the circuit. If the material fails to comply, further conditioning and retesting are not permitted.

NOTE Typically, communications circuits ifc gas detection equipment will iiec constructed to meet the Ma.

The maximum peak voltage shall be assessed taking into account normal operating conditions transients being disregarded and fault conditions as specified In this standard. At the end of any water ingress tests, no water shall be visible inside the enclosure.

Fault conditions according to 4. The routine pressure test may be waived where the enclosure has passed a. Attention is particularly drawn to the following: The encapsulation “m” standard includes two levels or protection “ma” and “mb”.

Any of these markings may be repleced by technically equivalent information 7 Instructions All powder filled “q” equipment shall be accompanied 06079-5 instructions as required by lECincluding the following additional particulars as a mintfrtum- – Where 06079-5 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. Equipment protection by increased safety “e” lEC 1Explosive atmospheres – Part 1 1: This standard supplements and modifies the general requirements of lEC The effectiveness of the protection shall be confirmed by the test of 5 1.

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Explosive atmospheres, Part 5: NOTE Suitable techniques that may provide visible evidence of being opened are.

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There shall be no damage or distortion which could reduce the protection provided by the filling material. Tests iecc be carried out under normal equipment conditions, but may be effected without the filling material present.

When determining the required values for creepage and clearance, the voltage vs be increased by a factor 600795- 1 1 in order to recognize the range of ice voltages in common us uppiy voltages given lue Ml the table may. Where a requirement of this standard conflicts with a requirement of lECthe requirement of this standard will take precedence. These EPLs are introduced to enable an aiternatlye approach to current methods ic sefecting Ex equipment.

For dated references, only the edition cited applies. NOTE It is not a requirement of this standard that conformity to the specification of the particle material and size rango of the particles needs to 600795- verified. Part 7 Equipment increased safety “e” protection by increased safely “e” lEC 1 Explosive atmospheres — Part 1 1: KOTH 1 It is acknowledged that the enclosure may need to be destroyed in order to determine tlie entrance of dust or water.

The filling material complies with the requirements, if the leakage current does not exceed A. This would make equipment selection easier and provide the ability to better apply a risk assessment approach, where appropriate. Disclosure to Promote the Right To Information Whereas the Parliament of India has set out to provide a practical regime of right to information for citizens to secure access to information under the control 600079-5 public authorities, in order to promote transparency and accountability in the working of every public authority, and whereas the attached publication of the Bureau of 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 idc information in an accurate manner to the public.

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Any breathing devices shall be in place. 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: 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.

Where integral fuses are used ief protective devices, the fusing element shall be of the enclosed type, for example, in glass or ceramic.

This test shall be carried out after the pressure type test in 5.

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The maximum voltage between the parts shall be used to determine the distances according to Table 2. For distance under a coating according to Table 2, the following conditions apply: The closing and sealing shall be the methods of 4. 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?

This standard applies to electrical equipment, parts of electrical equipment and Ex components with: The pressure shall 600795 applied for at least 10 s.

Equipment protection by powder filling ‘q’ [ETD These enclosures shall be marked with the symbol “X” in accordance with Bureau of Indian Standards BIS is a statutory institution established under tine Bureau of Indian Standards Act, to promote harmonious development of the activities of standardization, marking and quality certification of goods and attending to connected matters in the country.

NOTE 2 The restriction on the size of the gap is intended to reduce the escape of filling material. Hazardous areas with the normal exception of coal mining; are divided into zones according to the degree of hazard.