通信电源讲义（Communication power supply handouts）.docVIP

通信电源讲义（Communication power supply handouts） Communication power supply lecture.Txt This article is contributed by xiaohongxin DOC documents may experience poor browsing on the WAP side. It is recommended that you first select TXT, or download the source file to the local view. Communication power supply handouts I. brief introduction of communication power supply With the continuous development of telecommunications industry, the development of new services, between the major telecommunications operators increasingly fierce competition, therefore, the power of communication increasingly high demand, in order to adapt to the rapid development of communication, the power supply system of communication production building by two road, electricity, oil reserve, reserve battery multiple means to ensure the power supply of communication equipment, the communication network more safe and reliable operation. Two. Types of communication power supply 1. AC power supply system 2. DC power supply system 380V (220V) -48V is divided into city power, wind power spare oil machine and mobile generator set, divided into city electricity conversion -48V system and solar energy direct current -48V system 380V (220V) 3. AC uninterruptible power supply system, i.e. UPS Three. AC power supply system, 1. cities, power classification 1) a class of city power supply: two stable and reliable independent power supply, each of which introduces a power supply line, also called private network or special line. The two power supply should not be checked and maintained at the same time, the average number of outages per month should not be greater than 1 times, the average failure time should not be greater than 0.5H. Two power supply lines should be equipped with automatic standby power supply device. All the way to the public network, all the way line is considered a category of city power category. 2) two kinds of electricity should meet one of the following conditions for A. is composed of more