nlwxpearo
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 Posted: Thu 22:51, 27 Jan 2011 Post subject: Ertan Hydropower Station Dam reservoir timber tran |
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Ertan Hydropower Station Dam reservoir timber transport and timber downstream of the dam reconstruction project facilities streamed About Electrical Design
According to the nature of work or living areas, select the appropriate standard of illumination, combined with the brightness, glare control, the overall consideration. Rational selection and arrangement of a variety of electric light sources and lamps, to the people to create a relaxed, comfortable, good lighting environment. Design is the low-voltage power distribution line protection, it relates to the safety and reliability of electricity. The works mainly as a low voltage circuit breaker protection of electrical distribution lines. Depending on the fault type and specific requirements of the installation of the appropriate protection engineering, design tuning options in Table 4. It should be noted that the protection of electrical installation of breaking capacity should be greater than the anticipated short-circuit current. If the selected protection of electrical breaking capacity is not enough, but the occurrence of a three-phase short circuit protection of electrical burning will make not only the protection of electrical damage to itself. The resulting arc is also threatening its neighbors, causing a fire. Decline of 4 low-voltage distribution circuit protection Shi Road, Man-chu of the project given the formula calculating symbolic setting that the breaker I prolyl IkI, L - circuit breaker frame degree rated current k - circuit breaker rated current long delay release When I1.1I. . , IE1.25I-- long delay overcurrent release breaker setting current I - short delay overcurrent circuit breaker setting current short release delay I1.2 (Il ��n called +,) Iz, - - instantaneous overcurrent circuit breaker setting current release. Ie - conductor allowed to continue carrying capacity transient ��zal_2 [Il_ (...} + (2-2.5)] qd1] I - Line to compute the current ... .,..,. L Bureau of Dan when the amount of RMS sensitive Idm-n ix Il3Ibc .-.-- an N-NNm.m ~ li wrong other than the summer strider Qiang current breaking capacity circuit calculations L: II-I snapped };};} starting current Ertan Cambodian hydropower reservoir timber transport exterminate over PANGXIDONG Xindong blast sent downstream facilities are not material electrical design of construction works Sui About 53 cars and other buildings to ask the protection of electrical installations breaking capacity, the solid near and far away from the transformer, the line cross section, linear , laying in different ways,[link widoczny dla zalogowanych], very different short-circuit current. difficult to make a detailed analysis, only picking up experience in the specific design. substations to withstand short-circuit of electrical current,[link widoczny dla zalogowanych], requires a high breaking capacity. transformer low voltage side short-circuit current is increased with the increase of transformer capacity, low-voltage circuit breakers rated breaking capacity is the current decreases with the decline, if the large-capacity transformer cabinet installation of small capacity and low voltage distribution transformers and low voltage distribution cabinet to install a small-capacity voltage circuit breaker their breaking capacity used to be less adaptable capacity of the project-phase short-circuit current transformer low voltage side of the results in Table 5. atlanto 5s7 Jikan 35 / 0,4 KV transformer short-circuit voltage crossing turn blue phase calculations (Y,[link widoczny dla zalogowanych], Yno connection) transformer capacity (KVA) 200250315400500630800�� 00,012,501,600 Total open constricted low-pressure outlet side lu'KA) 4.55.678.911.21417.8z2.3278355 low-voltage feeder circuit switch outlet side lJ. (KA) 445.5698.610.713. 316.720.6z5.731,[link widoczny dla zalogowanych], 6 Note: The data in the table does not consider the feedback system impedance and the motor current will be selected in this project and breaking capacity circuit breakers and over the table 125B model, 800KVA listed with the s2-160N5 relatively short-circuit current : AH road series with the circuit and over ,1000-1600KVA model of a device using s3 for low side power switch, according to the rated current configuration, 160H and above models, the breaking capacity can meet the breaking capacity to be able to meet the requirements; with the s series circuit breaker for the request. feeder switch .650 KVA transformer sl and the following one (on the next page 25) nodules with nitrogen fixation, soil chloride can increase the cable, the white flowers of the plant operation Osmanthus fragrans to analyze the soil, see Table 3.0. 97210.9941 atlas of soil nutrient content 3 0.069O0.08060.250.0910.18013805 Note: Nanchong City Farmers speech by the central laboratory analysis of soil nutrients from the analysis showed that the white flowers and sweet clover to increase the humus, improving soil organic matter and chlorine content, the transfer of phosphorus in the soil deep topsoil. rich topsoil of the phosphorus nutrition, reducing soil bulk density. to improve the soil structure and soil properties. conducive to the growth of crops and forest operation. 4 sum up the conclusions and recommendations above,[link widoczny dla zalogowanych], the strong resilience of white sweet clover plants, both green hilly area of Red Hill Bald Ridge pioneer grass species, but also the required quality livestock forage, ecological benefit, economic benefit is remarkable; planting is simple to learn, flexible and diversified ways, planting longer, fewer pests and diseases suggested a place in similar habitats to promote cultivation.
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