CONSTRUCTION BS 60598 (BS 4533) K.F. Chan (Mr.) MEBS 6002.

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Presentation transcript:

CONSTRUCTION BS 60598 (BS 4533) K.F. Chan (Mr.) MEBS 6002

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

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

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

IP symbols K.F. Chan (Mr.) MEBS 6002

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

K.F. Chan (Mr.) MEBS 6002

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

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

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

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

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

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

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

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

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

Example – ammonia plant room EEx ‘d’ Apparatus Group IIA, T1 temperature class, IP44 K.F. Chan (Mr.) MEBS 6002

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