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Dongguan Jiuqi Industrial Co., Ltd.
Contact: Mr.liang
Mobile: +86-13122876672
Tel: 0769-81818179
Fax: 0769-81806179
Address: Kongwu District, Guxia, Shipai town, Dongguan city
Postal Code: 523339
website: http://www.hetfuta.cn/
E-mail:haulwee@vip.163.com
High frequency switching power supply
| High frequency switching power supply |
| The high frequency switch communication power supply system is an intelligent unattended combination power supply system, which adopts the international advanced rectification and transformation technology, and can be widely used in various exchange equipment, microwave communication, mobile base station, optical fiber transmission and other communication fields, as well as power communication and other fields. (1) equipment composition and working principle At present, the high frequency switch rectifier of communication credit is generally made into a module, which consists of ac power distribution unit, rectifier unit, dc power distribution unit, monitoring unit and battery group unit. Figure 1-5 is a schematic diagram of a power adapter system, including an ac distribution unit, a number of rectifying modules, a battery pack, a dc distribution unit, and a monitoring module. The ac distribution unit is responsible for distributing the input three-phase alternating current to multiple rectifying modules (usually single-phase alternating current is in the majority). Ac input adopts three-phase five-wire system, namely, three phase lines a, b and c, one zero line N and one ground line E. First, three air switches are connected to control the input of three-phase alternating current. Then, M()A arrester is connected to protect the electrical appliances behind from the impact of high voltage. The rectifier module completes the conversion of ac to direct current that meets the communication requirements. The content that accords with communication requirement has: the output direct current voltage should be stable, the output direct current voltage contains ac murmur small, the output voltage should be adjustable in certain range, in order to meet the charge voltage requirement of the battery that connects subsequently. At the same time, due to a power adapter system with multiple rectifier module, so multiple rectifier module work there is a coordination problem, including multiple rectifier module work distribution load current (that is, the stream function), one of the output high voltage rectifier module in the module can exit without affecting the normal work of other modules (i.e., selective overvoltage stop function), etc. Figure 5 schematic diagram of power adapter system A power adapter system is equipped with one or two groups of batteries according to the situation. The position of the connecting system is shown in figure 1-5. After the rectifier module outputs, it belongs to the dc distribution unit. In addition to the corresponding protection fuse, there is also a string of normally open contact K of the contactor, which is called the Low Voltage Disconnected (LVD) device of the battery bank. When the output voltage of the system is in the normal range, the normally open contact K is action closed, that is to say, the battery group is not involved in the work of the human power adapter system. |
| | release time：2019.10.11 Source： |
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Contact: Mr.liangTel:+86-13122876672Tel:0769-81818179Fax:0769-81806179 E-mail:haulwee@vip.163.com
Address: Kongwu District, Guxia, Shipai town, Dongguan city, China Zipcose:523,339
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