The header cabinet is a cabinet at the top of a list of cabinet equipment. Usually at the front end of the column, called the column end cabinet, the main function is to provide power to the exchange or direct load of this column cabinet, to play the functions of distribution, monitoring, measurement, protection, warning and other functions. The column cabinet is similar to the cabinet type distribution box, which contains many circuit breakers. Next, the main function and operating principle of the following head cabinets are introduced.
What's the stand?
The header cabinet is a cabinet at the top of a list of cabinet equipment。 Usually at the front end of the column, called the column end cabinet, the main function is to provide power to the exchange or direct load of this column cabinet, to play the functions of distribution, monitoring, measurement, protection, warning and other functions。 The column head cabinet is similar to the cabinet type distribution box。 There are many circuit breaker power distribution cabinets referred to as the column head cabinet, and the column head cabinet is divided into ordinary column head cabinets and precision column head cabinets。 The general column cabinet is mainly used in the communication room and station transmission equipment room。 It is installed in the column head and column tail of the equipment, and is matched with the bar frame communication column and optical end column, etc。, and is used as a power supply for the communication equipment through the distribution device in the equipment。。
Precision column cabinets are a crucial part of the distribution of computer rooms in the entire computer room, but they are also easily overlooked. The current computer room equipment servers, air conditioners, UPS, and fans have all been able to monitor at any time. This step, The computer room distribution monitoring is a blank, the traditional power distribution cabinet is only a few table heads plus a few required switches, even if the control ring is only in the distribution cabinet to carry out secondary modifications to add various modules. This is cumbersome and ineffective.
The distribution circuit of the computer room is generally a two-way city power access, the first advanced city power distribution box, part to UPS, part to air conditioning and lighting, ordinary socket, UPS lower end then into the UPS distribution cabinet, assigned to each column cabinet。 After passing through the header cabinet, connect to each cabinet PDU and then to the load。
The power feed line of the column cabinet generally uses a double power feed line。 When the power supply system fails and the power supply is cut off, the other power supply is automatically put into the power supply to ensure the continuity of the power supply。 In order to achieve short circuit and overload protection, plastic shell circuit breakers are used in front of double power supplies, short circuit and overload protection are provided, and isolation functions are also provided to facilitate maintenance。 Generally, electrical fire monitoring system, electrical fire detector and monitoring unit should be installed in the box。 Because the computer room equipment is very sensitive to lightning strikes, it is generally necessary to select surge protectors。
The main outlet circuit of the column cabinet can select the plastic shell circuit breaker, and if necessary, it can be equipped with a leakage module. The power supply continuity of the equipment in the computer room is very important. The power parameter measuring instrument is deployed at the entry line of the column cabinet. It can monitor the level of electrical parameters in real time, send fault warning signals in time, detect potential potential failures in advance, and monitor the energy consumption level at the same time.
The module allows the user to quickly and flexibly increase and reduce the circuit to meet the power consumption expansion requirements of the computer room.