Note - The marking of the symbols corresponding to IP numbers is optional.
Amperes | A | ||
Frequency (hertz) | Hz | ||
Volts | V | ||
Watts | W | ||
Class II |
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Class III |
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Rated maximum ambient temperature | ta … °C | ||
Warning against the use of cool-beam lamps |
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Minimum distance from lighted objects (metres) |
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Luminaires with built-in ballasts or transformers suitable for direct mounting on normally flammable surfaces |
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Ordinary | IP20 | no symbol | |
Drip-proof | IPX1 |
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(one drop) |
Rain-proof | IPX3 |
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(one drop in square) |
Splash-proof | IPX4 |
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(one drop in triangle) |
Jet-proof | IPX5 |
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(two triangles with one drop in each) |
Watertight (immersible) | IPX7 |
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(two drops) |
Pressure-watertight (submersible) | IPX8 |
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(two drops and max depth of submersion) |
Protected against solid objects greater than 2.5mm | IP3X | no symbol | |
Protected against solid objects greater than 1mm | IP4X | no symbol | |
Dust-proof | IP5X |
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(a mesh without frame) |
Dust-tight | IP6X |
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(a mesh with frame) |
Use of heat resistant supply cables, interconnecting cables or external wiring |
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Luminaires designed for use with bowl mirror lamps |
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Rough service luminaires |
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Luminaires with high pressure sodium lamps, requiring an external ignitor |
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Luminaires for use with high pressure sodium lamps having an internal starting device |
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