The internal structure and layout of the explosion-proof flashlight are very exquisite, and it is necessary to consider the rationality of the wiring, but also to consider the needs of heat dissipation and insulation, which often tests the strength of the engineers of the flashlight company. In addition, explosion-proof glare flashlights mostly use LED light sources, based on the luminous characteristics of LEDs, the country also has relevant standards to control the layout of LED lines. The following is to follow the footsteps of Shenzhen explosion-proof searchlight manufacturer TANK007 strong light company to understand.
The standard for LED traces in LED explosion-proof flashlights
LED internal wiring standards, national standard GB7000.1 requirements, LED lamps and lanterns used in the internal wiring to consider the wire diameter and insulation thickness, mechanical damage, insulation layer heating temperature, insulation whether it meets the standard and other five aspects. Regarding mechanical damage, according to the experience of tank007 high-power explosion-proof flashlight engineers this is usually no problem. The problems that are prone to occur are concentrated in the insulation line and the thickness of the insulation.
To meet the national standard GB7000.1 standard, it must be required that when the normal current of explosion-proof searchlight or flashlight is lower than 2A, the nominal cross-sectional area of the internal wire is not less than 0.4mm², and the thickness of the insulation layer is not less than 0.5mm. In terms of insulation, since most of the strong light explosion-proof flashlight shell uses aluminum alloy shell belongs to the conductive metal parts, which requires engineers to ensure that the internal insulation can not be in direct contact with the flashlight aluminum shell, for the internal wire of explosion-proof lamps need to be double insulated wire to meet the insulation requirements. It should be noted that the internal traces used by many small factories to produce LED explosion-proof flashlights rarely take into account the requirements of cross-sectional area, insulation layer thickness and insulation wire grade.
The relationship between the internal wiring of the LED explosion-proof searchlight and the driving power supply
Since the explosion-proof strong light searchlight driving power supply is a large household with internal heat generation of the flashlight, its internal transformer, filter inductor, heat sink and resistance capacitor will emit high temperature when working in high-power explosion-proof flashlight. Therefore, when the internal layout of the conductive circuit, it should avoid direct contact with the components with large internal power supply heat to avoid local overheating of the insulation layer and cause damage to leakage and short circuit.