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電氣外文文獻(xiàn)及翻譯---高層建筑供配電系統(tǒng)設(shè)計(jì)-管理系統(tǒng)-文庫(kù)吧資料

2025-05-21 20:24本頁(yè)面
  

【正文】 ns, 20 transformer, hundreds of lowvoltage fed out of the closet, fed the circuit more. Accordance with the International Electrotechnical Commission (IEC) and the Chinese national standard requirements: ① All the distribution number to be simple and clear, not too box and line numbers are not repeated. ② number to simple and clear, not too long. ③ distinction between nature and type of load. ④ law was easy to find, make viewer at a glance. Based on the above requirements and on the ground, fire district and the underground construction industry form the different conditions, using two slightly different ways. Essential for the underground garage, uses a single parison, also relatively fire district neat, according to fire district number, such as ALBL1 / 1, AP and APE, the meaning of the letters and numbers: AL on behalf of lighting distribution (AP on behalf of Power distribution box, APE on behalf of the emergency power distribution box)。 bus carrying capacity for the 1000A, this road can meet the maximum 1000A current load requirements, even if there is adjustment, power distribution switches and circuit can not make big changes. 6 layer distribution box set According to the division of layers of fire protection district, respectively numbered as A ~ K layers within the set level shaft for the retail lighting power distribution box, with one on one power supply shops in radial power. Should be noted that the forms of the plex layers of layers of fire partition, does not correspond to the lower, making some of shaft power in charge of the fire district at the same time, also responsible for the power supply adjacent to the fire district. At design time, using the principle of proximity, while also taking into account the burden of the whole trunk load conditions, so that each shaft as far as possible a more balanced load. 7 public area distribution box set Taking into account the future needs of the business redecoration of public areas must be reserved for power. Here the design needs to consider the following points: ① question of how much reserve power, lighting and electricity, which according to GB500342020 Architectural Lighting Design Standards table of Article and , mercial building lighting power density value, highend supermarkets, business offices as 20W/m2, under the decorative lighting included 50% of the total lighting power density calculation requirements, using the reserved standard 40W/m2. ② In order to facilitate the decoration in each partition set fire lighting in public areas and emergency lighting distribution box distribution box, in order to identify the electrical power distribution decoration cutoff point. ③ the staircase, storage rooms and other parts of the decoration does not need to do, set the power distribution circuit or a separate distribution box, try not to be reserved from the public area of electricity distribution board fed hardcover out. ④ control of lighting in public areas, the majority in two ways, namely, CBUS control system or the BA system, the use of CBUS has the advantage of more flexible control, each road can be fed out of control, adjustable light control。 in the bus and the transformer cir
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