1. CONSTRUCTION
BS (BS 4533)
K.F. Chan (Mr.)
MEBS 6002

2. PROTECTION AGAINST ELECTRIC SHOCK
K.F. Chan (Mr.)
MEBS 6002

3. IP RATING – 1st digit
K.F. Chan (Mr.)
MEBS 6002

4. IP RATING – 2nd digit
K.F. Chan (Mr.)
MEBS 6002

5. IP symbols
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MEBS 6002

6. IP65 luminaire
K.F. Chan (Mr.)
MEBS 6002

7. K.F. Chan (Mr.)
MEBS 6002

8. Classification according to supporting surface material
K.F. Chan (Mr.)
MEBS 6002

9. Shatter proof high bay luminaire
K.F. Chan (Mr.)
MEBS 6002

10. Safety chain for shatter proof luminaire
K.F. Chan (Mr.)
MEBS 6002

11. FLAMMABLE ATMOSPHERES
ZONE 0 – explosive gas/air mixture continuously present
ZONE 1 – explosive gas/air mixture likely to occur in normal operation
ZONE 2 – explosive gas/air mixture not likely to occur in normal operation
K.F. Chan (Mr.)
MEBS 6002

12. ZONE 0 EEx ‘ia’ intrinsically safe
EEx ‘s’ special protection (specifically certified for use in zone 0), e.g. factory sealed handlamp, completely encapsulated lighting fittings
K.F. Chan (Mr.)
MEBS 6002

13. ZONE 1 those suitable for zone 0 EEx ‘p’ Pressurized system
EEx ‘d’ Flameproof
EEx ‘e’Increased safety, e.g. cold starting fluorescent tubular lamps with single pin caps, tungsten filament lamps for GLS, mixed lights
EEx ‘ib’ Intrinsically safe
K.F. Chan (Mr.)
MEBS 6002

14. ZONE 2 those suitable for zone 0 and zone 1 EEx ‘o’ oil immersion
EEx ‘q’ sand filling
EEx ‘n’ non-sparking
K.F. Chan (Mr.)
MEBS 6002

15. APPARATUS (GAS) GROUP Group 1 Mines susceptible to firedamp (methane)
Group II
Places with a potentially explosive atmosphere, other than Group I mines, e.g. ethylene is gas group IIB.
Refer to EN50014 for details
K.F. Chan (Mr.)
MEBS 6002

16. TEMPERATURE CLASS
Ignition temperature is the lowest temp at which the most explosive mixture of the given substance and air will just ignite at a heated surface
T1 – 450oC
T2 – 300oC
T3 – 200oC
T4 – 135oC
T5 – 100oC
T6 – 85oC
Refer to BS4683 Part 1
K.F. Chan (Mr.)
MEBS 6002

17. Example – ammonia plant room
EEx ‘d’ Apparatus Group IIA, T1 temperature class, IP44
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MEBS 6002

18. EEXd IP66 luminaire
K.F. Chan (Mr.)
MEBS 6002