The standard requirements of the LED fluorescent lamp holder, the internal wiring used by the LED fluorescent lamp need to assess the LED lamp is mainly the diameter and insulation thickness, mechanical damage, the insulation layer heating temperature, and whether the insulation meets four requirements. In general, there is no problem with the protection of mechanical damage in internal lines. The main problems will be in the other three aspects.
According to the requirements of GB7000.1 standard, when the positive current of the bayonet base is lower than 2A (the working current of the general LED fluorescent lamp will not exceed 2A), the nominal cross-sectional area of the internal conductor is not less than 0.4mm2, and the thickness of the insulation layer is not less than 0.5mm . Moreover, from the insulation point of view, because the aluminum shell is accessible metal parts, the internal basic insulation can not be in direct contact with the aluminum shell, which requires the internal wire to be double insulated wire, unless there is relevant certificate to prove that the wire insulation layer can meet the strengthening Insulation requirements, it is also possible to use a single-layered insulated wire for internal wiring. However, at present, the internal lines used in LED fluorescent lamps on the market rarely consider the requirements of the cross-sectional area, the thickness of the insulating layer and the level of the insulated wire.
In addition, when the internal wires of the LED fluorescent lamp heads are in line, it is also necessary to pay attention to avoid direct contact between the wires and the internal heat generating parts, such as transformers, filter inductors, bridge stacks, heat sinks, etc., because these components work in LED fluorescent lamps. At this time, the temperature is likely to exceed the heat-resistant temperature of the internal wire insulation. When the internal wires are routed, they do not contact the parts with large heat, which can prevent the insulating layer from being damaged due to the local overheating of the insulating layer, resulting in safety problems such as leakage current or short circuit.
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