Table of Contents
The explosion protection concept powder filling is used in applications such as capacitors and ballast units in Increased Safety Ex ‘deq’ lighting fittings, and in telecommunicators equipment.
Standards #
| Current constructional standards | |
| IEC 60079-5: 2007 BS EN 60079-5: 2007 | Explosive Atmospheres – Part 5: Equipment Protection by Powder filling ‘q’ |
| Older standards | |
| BS EN 50017: 1998 | Powder filling ‘q’ |
| BS 5501-2: 1977 | Powder filling ‘q’ |
| Codes of Practice | |
| BS 5354: Part 9: 1979 (Withdrawn) | Installation and maintenance requirements for electrical equipment with type of protection ‘q’ sand filled equipment |
Note: Since BS EN60079-14 and BS EN60079-17 do not provide selection, installation, inspection and maintenance requirements for powder filled equipment, in the UK BS 5345: Part 9 remains the only reference for guidance in these areas for the present
Definition #
‘A type protection in which the parts capable of igniting an explosive gas atmosphere are fixed in position and completely surrounded by a filling material to prevent the ignition of an external explosive atmosphere.’
Zone of Use: 1 & 2
