1.Marking of lamps
When inspection lamps and lanterns should check the mark on lamps and lanterns above all, wait like trademark, model, rated voltage, rated power, judge whether its accord with the use specification of the masses. Marking safety is the basic requirement in the safety performance of lamps and lanterns, among which rated power is particularly important. For example, if a lamp is designed to be 40w, without marking rated power, users are likely to install 60w or 100w bulbs, which may cause shell deformation, insulation damage, even electric shock, and possibly cause fire.
Additional, standard stipulates, the wire minimum cross section that USES on lamps and lanterns is 0.5 square millimeter, some manufacturer is to reduce cost, the traverse sectional area that USES on the product is less than 0.5 square millimeter, make electric wire scorch possibly so, short circuit happens after insulator layer burns out, produce danger. During the inspection, you can see the marks printed on the insulating layer outside the wire on the lamp.
2.Protection against electric shock
Should pay attention to the protection against electric shock, after the lamp is energized, the person should touch the live parts, there is no danger of electric shock. If be incandescent lamps and lanterns (for example droplight, wall lamp), install bulb to go up below the circumstance that is not electrified, if touch with little finger cannot live part, prevent electric shock performance is basically accord with.
The antishock performance of lamps and lanterns does not meet the standard, it is to use the lamp holder that does not meet the requirements or the live parts of lamps and lanterns do not add cover to prevent electric shock protection measures caused by.
3. identification from the structure of the luminaire
There should be no sharp edge at the entrance and exit of the metal pipe after the wire, so as not to cut the wire, resulting in electrification of the metal parts, the risk of electric shock. Table lamp, floor lamp and other movable lamps in the power line entrance should be wire fixator, its role is to prevent the power line push back to hit the heating element, wire overheating caused by melting insulation layer, exposed wire and metal shell contact, shell electrification and lead to electric shock.
4. identification from the accessories used on the luminaire
(1) If the lamps and lanterns with electronic ballast, should choose and buy with abnormal protection of electronic ballast lamps, the so-called abnormal protection refers to the fluorescent line when there is an abnormal state of protection, so that the electronic ballast can still work normally.
(2) Lamps such as the use of inductive ballast, look at the ballast on the logo, try to choose the Tw value of a higher (such as Tw130) especially lamps and lanterns cooling conditions poor, should pay attention to this point. Tw is the rated maximum operating temperature of the ballast coil, at which the ballast can operate continuously for 10 years.