What are the common faults of solar street lights and their causes

Common faults of solar street lights: There are two common faults: one is high resistance fault; the other is low resistance fault. The so-called high-resistance fault means that the cable is blown, the measuring resistance of the instrument is large, or the insulation between phases or to the ground drops, but there is a certain resistance value; the so-called low-resistance fault means that the wire is short-circuited or completely short-circuited to the ground, and the current Increase, the power transmission tripping phenomenon. These two faults and their frequent occurrence pose a threat to the normal use of garden lights. Therefore, we must pay full attention to find out the reasons and countermeasures. Causes of failure: 1. Poor construction quality The proportion of failures caused by construction quality is relatively large. Main manifestations: First, the depth of the cable trench is not enough, and the sand laying bricks are not constructed according to the standard; second, the production and installation of the aisle pipe does not meet the requirements, and the two ends are not made into bell mouths according to the standard; third, when laying cables Dragging on the ground; Fourth, the pre-embedded pipe of the foundation is not constructed according to the standard requirements, mainly because the pre-embedded pipe is too thin, plus a certain curvature, it is quite difficult to pass the cable, and there is a 'dead bend' at the bottom of the foundation; five It is because the thickness of the wire nose crimping and insulation wrapping is not enough, and there will be short-circuits between phases after long-term operation. 2. The material is not good enough Judging from the failures handled in recent years, the low quality of the material is also a big factor. The main manifestations are: the wire contains less aluminum, the wire is relatively hard, and the insulating layer is thin. This has become more common in recent years. 3. The quality of the supporting projects is not hard. The garden light cables are generally laid on the sidewalk. The sidewalk construction quality is poor, the ground sinks, the cable is deformed by force, and the cable is armored. Especially the northeast region is in the alpine zone. When winter comes, the cable and the soil form a whole. Once the ground subsides, it will be pulled at the bottom of the garden lamp foundation. In summer, when there is a lot of rain, it will burn at the root of the foundation. 4. Unreasonable design On the one hand, it is overloaded. With the continuous development of urban construction, garden lights are also continuously extended. When building new garden lights, whichever garden light is close to is often connected to which circuit. In addition, the advertising business has developed rapidly in recent years, and the load of advertising is also connected to the garden accordingly. On the lamp, the load of the garden lamp is too large, the cable is overheated, the wire nose is overheated, the insulation is reduced, and the grounding short circuit occurs; After the cable head is wrapped, most of them can't even close the door. Sometimes the cable length is not enough, and the joint production does not meet the requirements, which is also the factor that causes the failure.
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