外文文獻(xiàn)及翻譯--淺談高層建筑供配電系統(tǒng)設(shè)計(jì)-建筑結(jié)構(gòu)-免費(fèi)閱讀
【正文】 disadvantage is that the exchanges and contacts for the threephase, threeway control may be related both to open, or both, in the decoration of the contacts required to feed the power supply circuit diverge to avoid failure blackouts. Design of distribution box 8 In the mercial real estate design, shop design is often only a meter box, and outlet route back to the needs of the user according to their second design, but the shops are difficult to resolve within the power supply fan coil units, airconditioning system as a whole can not debug. The project approach is to add a circuit breaker in the meter box for the coil power supply, another way for users to use the second design, as shown below. User distribution box design 9 distribution cabi / box number and distribution circuits Largescale projects are often low voltage distribution cabi / box number, lowvoltage circuits to feed the more often there will be cabi / box number and line number duplication, resulting in the design and the future looks difficult maintenance and overhaul. The project has three 10Kv substations, 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)。 will be in the same city, different regions have different consumer groups . 3) the need to factor in the choice: parameters determined, the need for load calculation. Need to factor monly used method, the calculation will not repeat them. Need to explore is the need for coefficient selection, which in the current specifications, manuals and the unified technical measures is also not clear requirements, based on years of design experience that most end shops in the distribution or level within the household distribution box with case Kx generally take a while, in the calculation of the loop route to take to , the distribution transformers in the substation calculations take to . 3 substations set Load calculation based on the results of this project the total installed capacity of transformer , after repeated consultations with the power pany, respectively, in the project in northern, central and southern three sections set the three buildings into three power substations, 1 set 6 sets transformer substation, take the northern section of power supply。低壓饋出回路的編號(hào)采用了如： W3— 6— AL— 1— A1， W3— 6)表示此回路由 3 號(hào)變壓器所供電的 6 號(hào)配電柜饋出， AL— 1— A1 表示本回路
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