SOROTEC UPS

1.Appearance and surface quality Because the cold plate is obtained after the cold rolling process, and cold rolling also carries out some surface finishing, the surface quality of the cold plate (such as surface roughness) is better than that of the hot plate. Therefore, if there is a higher requirement for the coating quality such as post-sequence painting, cold plate is generally chosen. In addition, hot plate is divided into pickling plate and non-pickling plate. The surface of pickling plate becomes normal metal color because of pickling, but the surface is still not as high as cold plate because of non-cold rolling. The surface of non-pickling plate usually has oxide layer, blackening, or iron oxide black layer. Popularly speaking, it’s like it’s burned, and it’s usually rusty if the storage environment is not good. 2.Performance Generally, the mechanical properties of hot plate and cold plate are considered to be indistinguishable in engineering. Although there is some ...

1.Compensation mode Domestic reactive power compensation devices basically use capacitors for reactive power compensation, the power factor after compensation is generally around 0.8-0.9. Static var generator uses power module to compensate reactive power. The power factor after compensation is generally over 0.98, which is the most advanced power technology in the world. 2.Compensation time It takes 200 milliseconds for domestic reactive power compensation devices to complete one compensation. Static var generator can complete one compensation in 5-20 milliseconds. Reactive power compensation needs to be completed instantaneously. 3.Stepped and Stepless Domestic reactive power compensation devices basically adopt 3-10 levels of stepped compensation, each increase or decrease level is tens of thousands of methods, can not achieve accurate compensation. Static var generator can start stepless compensation from 0.1 kF and realize precise compensation completely. 4. Ha...

Active harmonic filter uses current transformer to collect current on DC line. After sampling, the obtained current signal is processed by harmonic separation algorithm, and the harmonic reference signal is obtained as a modulation signal. Compared with triangular wave, the switching signal is obtained. The switching signal is used to control the single-phase bridge. According to the principle of technology, the switching signal of the upper and lower arms is connected back, and the harmonic current equal to the harmonic signal on the line and opposite to the harmonic signal on the line can be obtained, and the harmonic current on the line can be cancelled out. This is the feedforward control part. Then the harmonic component of the line current after the access point of the active harmonic filter is fed back as the input of the regulator to adjust the error of the feedforward control. Generally speaking, it is based on the principle of capacitance with high frequency resistance ...

1.Blown fuse Normally, blown fuses indicate that there is a problem with the internal circuit of the  switching power supply . Because the power supply works in the state of high voltage and high current, the fluctuation and surge of the grid voltage will cause the instantaneous increase of the current in the power supply and cause the blown to fuse. Emphasis should be placed on checking rectifier diodes, high voltage filter electrolytic capacitors, inverted power switches, etc. at the input end of the power supply, and checking whether the components have breakdown, open circuit, damage, etc. If the blown is indeed fused, we should first look at the various components on the circuit board to see whether the appearance of these components has been burned, whether there is an electrolyte overflow, if the above are not found, then use a multimeter to measure the breakdown short circuit of the switch tube. Special attention should be paid to the fact that when a component is...

Some people may find that their  inverters  display 15.3 degrees of power today, but only 14.5 degrees on the meter. A little difference in a day, accumulated over time, that’s a lot! So is the meter installed by the power supply company deliberately slowing it down? Of course not. Now let’s explain to you. There are two main reasons: 1.Causes of line loss: As the heart of photovoltaic, all DC power must be processed to 220V AC power, and then transmitted to the grid through the meter. Then it means that there is a line between the  solar inverter  and the meter. If there is a line, there must be loss. The size of the loss depends on the length of the line and the specifications of the wire, so it’s normal to make a little difference every day. But if there are many differences, it must be a problem. 2.The measurement problem: not that they measure differently, but the accuracy is not the same. Generally speaking, at present, the precision of our single-phas...

Outdoor integrated cabinets  are mainly used in the communications industry. The main raw materials for  outdoor cabinets  are sheet metal. Here is a detailed introduction of why we choose sheet metal as raw material for outdoor cabinets. Outdoor integrated cabinet generally includes shell, bracket, various switches on panel, indicator lamp, etc. The shell is made of steel plate and plastic, with high hardness. It mainly protects the internal components of outdoor cabinet. The bracket is mainly used for fixing the motherboard, power supply and various drivers. Appearance and material are the most basic characteristics of a cabinet. Appearance directly determines whether a cabinet can be accepted by users. Therefore, the current appearance gradually tends to diversify, so it also occupies a certain proportion in our testing. Material mainly depends on the material used in the cabinet. Whether the edges are curled or not, the quality of the material also directly a...

1.The power of  UPS  generally refers to the output power. The input power is bigger than the rated power, especially when the battery has discharged after a period of power stopping. The input rectifier not only supplies power to the load, but also charges the battery. The maximum current can reach 1.3 times of the rated current. If the battery pack capacity is particularly large, and the host is equipped with a charging module, the current will be greater. 2.UPS itself is a kind of non-linear load, which will produce some harmonic current feedback to the input grid, and will increase the temperature of the generator ball. If the generator load ratio is too high, it may burn the ball. 3.The load behind UPS to the generator is all selected by the internal circuit of  on grid UPS  to be battery or city power/power generation. It is one-time loading. There is no soft start or other way. If UPS is loaded at 80% load and the impulse current is calculated at thre...