The LED lamp holder looks very simple, but it still has many details that need attention, such as its structure, if it is unreasonable, it is prone to some failures or even fire. Below, let's follow the professional manufacturers to understand some common structural problems of LED lamp holders.

LED lamp caps are prone to problems in three places: lamp caps, screws, basic car lamp cap insulation and touches of accessible metal parts. The lamp holder needs to meet the torque test of the GB18774-2002 rule and the size requirement of the GB2799-2001 rule. Meanwhile, the torque test of the GB18774-2002 rule requires that both before and after the high temperature test be in compliance with the rules of clause 2.3.1 of the specification, that is, when the torque test is applied, the rotation between the various parts of the lamp cap should not exceed 6°. The high temperature condition applied by the lamp cap is (125±5)℃, and the heating time is (2000±50)h.

　　 If the G13 lamp holder is used and the lamp power is greater than 40W, the high temperature condition is: (140±5)℃. High-temperature B22 lamp cap conditions and duration The inspection of LED lamp caps using plastic materials for the lamp cap is relatively harsh. Using plastic lamp caps with low heat resistance, after applying such a long period of high temperature conditions, it is likely that the plastic parts have already softened. If a metal lamp holder is used, it is relatively easy to satisfy the experimental conditions, but it is also necessary to consider the reliability of the connection between the metal lamp holder and the LED lamp body, as well as the creepage interval and electrical gap.

　　The screws at the LED lamp cap mainly play the role of connection and fixing between the lamp cap and the lamp body. Now, the diameter of the screw at the common LED lamp head is less than 3mm, and according to the rules of GB7000.1, this type of screw needs to be screwed into the metal. Nowadays, the common practice is to use an aluminum shell for the LED lamp head, and this screw is directly screwed into the metal shell, so that it can also meet the requirements. However, a common problem caused by this is that after the screw is screwed into the metal shell, the screw and the charged metal part of the lamp cap are too close, which easily leads to the failure of the creepage interval and the electrical gap.

　　 The internal wiring of the LED lamp holder is mainly used to connect the lamp holder pin and the input and output of the built-in power supply. The built-in power supply and the aluminum shell are separated by a sleeve. According to the rules of GB7000.1, the insulation between internal live parts and accessible metal parts must be satisfactory with two layers of insulation or reinforced insulation. This requires the insulation requirements of the bushing to meet the electrical strength requirements of the reinforced insulation level.

　　Through the above content, you now know how important it is to choose a regular manufacturer when buying LED lamp holders. Yangzhou Duliang Lighting Co., Ltd. is a professional manufacturer, and the quality of its products will definitely give you peace of mind. Welcome to inquire about our products at any time.