There are three basic elements for choosing waterproof junction box. First: how much current and how many way is required for the terminals. We can derive the current value from the formula: Power divided by voltage equals current. Second: how many outlet and inlet holes are required. Be aware of how many sets of wires are going in and out. For example, a waterproof junction box with one entry and four exits is required, and the wire is 3*2.5mm2, it needs to be equipped with 8-12mm waterproof rubber core. The wiring range of the waterproof junction box is 0.5-4.0mm2, the larger the squ...

The function of the lightning arrester is to protect various electrical equipment in the power system from damage caused by lightning overvoltage, operating overvoltage, and power frequency transient overvoltage. The types of surge arresters mainly include protective gaps, valve-type surge arresters and zinc oxide surge arresters. The protection gap is mainly used to limit the atmospheric overvoltage, and is generally used for the protection of the incoming line section of the power distribution system, lines and substations. Valve-type surge arrester and zinc oxide surge arrester are used...

The street lamp distribution box is an important accessory of modern street lamps. It is installed inside the lamp pole near the bottom of the street lamp. First, the mains power is distributed to the light-emitting source on the upper part of the light pole, and at the same time, it can be connected to the next street light, so that each street light and the light-emitting source on each street light can be connected in parallel. ...

First of all, from the appearance point of view, the shell of the heat-shrinkable tube SPD is using a section of heat-shrinkable tube which wrapped the electronic components tightly after high temperature heating, thus forming the shell of the finished lightning protection device. Secondly, from the structural point of view, the inner place of the heat shrinkable tube SPD is not suitable to be installed a safety trip protection device. Because heat-shrinkable tubes need high-temperature processing to shrink, but high-temperature processing can cause damage to the safety trip protecti...

Nowadays, LED light sources are widely used in outdoor lighting fixtures, and there is another very important component in the fixtures, that is, the driver, LED luminaries cannot be used without it. Meanwhile, the importance of the driver also makes it expensive, it’s an important part of the cost of outdoor lighting fixtures, the quality of LED drivers varies will also cause the quality of lighting products to be unstable....

The structure of the traditional street light is very simple, so the wiring method is also very simple. It directly connects to the light source from the bottom of the street light after the mains cable through the distribution box. Commonly known as "one connection to the top". However, with the advancement of technology and the improvement of safety requirements, many electrical components have been added to the interior of modern street lights. Such as the circuit breakers and surge protector have been added to the interior of modern street light. In order to save energy and labor cos...

Connectors include famous American brands MOLEX, TYCO (AMP), 3M and SAMTEC.Famous Japanese brands JST, HIROSE, YAZAKI, JAE;Famous French brand FCI;Korea famous brand KET, KUM and other brands.Connection terminals include PHOENIX in Germany, HEYCO in the United States, DINKLE in Taiwan, and GREENWAY in mainland China....

The ip68 test standard is continuous water immersion under a certain pressure.

Under normal circumstances, the outdoor street light source module‘s own withstand voltage is 1500V, which itself has an error, the maximum error is plus or minus 20%, which means that the outdoor street light source module‘s own voltage withstand voltage is 1200V- 1800V, the minimum withstand voltage is 1200V; when the lightning strike, as long as the residual voltage of the lightning arrester does not exceed 1200V, it will not damage the light source module of the outdoor light....