Ключевые слова:
Protected electrical equipment|Flammable atmospheres|Headwear|Electric cells|Verification|Fire-damp|Explosive atmospheres|Cap lamps|Acid-resistance tests|Lamps|Safety measures|Fasteners|Enclosures|Miners lamps|Fire safety|Performance|Diameter|Electric contacts|Flexible cables|Testing conditions|Electrical safety|Battery-powered devices|Design|Ignitability|Dimensions|Marking|Fire risks|Electrical equipment|Drop tests|Occupational safety|Mining equipment