Introduction of safe load range of DC power outlet
Release time：2018-09-06 Clicks： Click
The safety load range of DC power outlet is not very clear to everyone. What exactly is it? Now let me give you a detailed introduction.
DC power sockets, headphone sockets are popular electronic components Dongkun, many people in use, in the procurement, but it is not clear DC power sockets, headphone sockets load current security range is what? The following East Kun electronics for everyone to give a good introduction. Headphone socket series of new photoelectric switches usually have the function of automatically preventing mutual interference, so there is no need to worry about mutual interference. However, the headphone socket counter-fire infrared photoelectric switch should prevent adjacent groups and mutual interference when several groups are installed side by side. The most effective way to prevent this interference is to set the transmitter and the receiver crossing, and to open the group distance when exceeding the group. Secondly, it is also a good way to use different frequencies. A series of reflective photoelectric switches are effective ways to prevent interference. Earphone socket and detection distance, the greater the interval should be, the specific interval should be determined according to the debugging situation. Of course, you can use different types of working frequencies.
Excluding the influence of background: When using reflective diffusive projector or receiver, sometimes the photoelectric switch or the object with higher reflectivity such as smooth background may make the photoelectric switch unstable.
Mirror Angle Effect: When the object under test is lustrous or encounters a smooth metal surface, the reflectivity is generally very high, which has the effect of approximating the mirror surface. The angle between the projector and the object under test should be installed so that its optical axis is not perpendicular to the object under test, so as to prevent misoperation.
DC power socket is in great demand for electricity in winter. Some users like to plug computers and electric heating into the same multi-purpose socket. Although it is very convenient to use, it has a great security risk. In the case of electric heating, its starting current is very high. If it starts with other high-power appliances at the same time, the contacts and leads of the sockets will be difficult to withstand sudden and excessive power load, which will affect each other and even destroy the appliances themselves, and even cause accidents.
When installing the earphone socket, the open socket should not be less than 1.8 meters from the ground, and the hidden socket should not be less than 0.3 meters from the ground, in order to prevent children from electric shock, finger touch or metal plug into the hole of the power supply. Be sure to use safety sockets with safety bumper.
Single-phase three-eye socket wiring requirements: the top of the grounding hole must be firmly connected with the grounding line, solid, docking, must not fail to connect. The remaining two holes of DC power socket are connected according to the rule of "left zero and right fire". It is noteworthy that the zero line and the protective grounding line must not be mismatched or connected as a whole; the refrigerator should use an independent three-eye socket with protective grounding.
The construction wiring requirements of single-phase binocular socket are as follows: when the holes are arranged horizontally, it is "left zero right fire" and when the holes are arranged vertically, it is "up fire and down zero";
Earphone socket manufacturers know that the socket can only withstand 2500W power generally, but the home computer, electric heating and other high-power electrical appliances used frequently or at the same time, it will exceed the safe bearing range of ordinary socket current, it is easy to lead to power failure or even fire accidents. Therefore, high-power electrical appliances must be equipped with 4000W high-power sockets. The outlet is too low. Many families feel too high when installing their sockets, which are not beautiful and will be installed in a low concealed position. It is easy to let water splash into the socket when sweeping the floor, resulting in leakage accidents.
Industry regulations, the best open socket from the ground is not less than 1.8 meters; headphone socket manufacturers hidden socket from the ground should not be less than 0.3 meters. The kitchen and bathroom outlets should be 1.5 meters above the ground level, and the outlet of the air conditioner should be at least 2 meters above. Socket wire is installed at will. The conductor must be cross section of copper wire. If you live in an old house, you must change the original aluminum wire into copper wire. Because the aluminum wire is easy to oxidize, the joint is easy to strike.
A survey has shown that the incidence of electrical fires is dozens of times that of copper wires. In addition, many families in order to beautiful, will adopt slotted buried wire, hidden pipe laying way, Dongkun electronic reminder, wiring must follow the "fire line into the switch, zero line into the lamp head" principle, but also in the socket with leakage protection device. The measurement error is reduced and the measured value is more accurate. Therefore, the voltage drop method is recommended for measuring the main circuit of the switch socket.
The cumbersome calculation of micro-switching shows that if the attenuation time constant on the switching socket circuit is set at 45 MS and the DC component in phase A and B is switched on at the same time, when the DC component in phase A and B reaches o.866, the maximum DC component in phase B (assuming it happens to be a side phase) can reach 112%. If the attenuation time constant in the switching socket system is increased to 60 ms, the maximum DC component in the six-phase (three-phase) system will reach l15%. In the split test, the DC component at the moment of contact separation is related to the duration of short circuit, that is, the time of breaker opening and relay protection action.
The DC socket is connected by two plug-in parts. One part of the headphone socket manufacturer compresses the wire and then plugs it into another part, which is welded to the PCB board. Bottom mechanical principle, this anti-vibration design ensures long-term airtight connection of products and reliability of products. Both ends of the socket can be fitted with ears, which largely protect the socket and prevent the socket from misalignment. This socket design ensures that the socket can be used.