Isbn: 9787802427808 - 正版国标图集12sdx101-2 民用建筑电气设计计算及示例 (1 resultados)

paperback. Condición: New. Ship out in 2 business day, And Fast shipping, Free Tracking number will be provided after the shipment.Paperback. Pub Date: 2012 07 Pages: 118 Language: Chinese in Publisher: China plans to Press 12SDX101-2 civil electrical design and calculation examples According to the current national standards and engineering design to actual needs. the preparation of civil electrical commonly used in the design calculations and examples for designers to use and reference. National Building Standard Design Atlas (12SDX101-2): civil electrical design calculations and examples include: supply and distribution system. the choice of short circuit current calculation with high and low voltage electrical relay protection calculation. wire and cable section selection and calculation of electrical lighting calculations. building lightning protection and grounding calculation. the weak systems used in the calculation of the engineering example. National Building Standard Design Atlas (12SDX101-2): civil electrical design calculations and examples by calculating principle calculation method. specification requirements and examples used in the process of building electrical design calculation introduced in order to design were able to correct depth understanding and mastery of building electrical design calculation methods and related regulatory requirements. Contents: cataloging a substation load calculation device power computational load to determine single-phase load peak current reactive power compensation capacity of the transformer power supply system power loss calculation of the power supply system power loss calculation and annual electricity consumption selection of high-voltage electrical calculation diesel generator capacity of UPS and EPS installed capacity of solar photovoltaic power system capacity harmonic calculation 2 short-circuit current is calculated with high and low voltage select high and low voltage electrical system short-circuit current is calculated short-circuit current of the power supply system of the diesel generator neutral point grounding device selection current transformer selection voltage transformer low-voltage electrical power transformer protection relay protection power capacitors for high-voltage power lines to protect high-voltage motor protection high voltage bus segment circuit breaker protection for the distribution system microcomputer protection design 4 wire and cable cross-section to select the selection criteria of the wire and cable cross-section to select the economic cross-section by economic current density allowable temperature rise selective cross voltage loss checksum-section by a short circuit heat stable condition check the cross-section and low voltage distribution system neutral line line of protection and protection of the cross-section of the neutral line hard busbar cross-section select 5 commonly used in electrical equipment. motor elevator 6 electrical lighting the illumination calculation estimates of the utilization factor method curve method illuminance calculated point by point calculation method the illuminance calculation 7 Building Lightning Protection calculate building expected camera lens used in the calculation of the number of lightning strikes the scope of protection lightning rod grounding resistance calculation weak project selection DVR capacity to select the video coaxial effective transmission distance calculated the calculated PA system broadcast system amplifier capacity feeder impedance matching. voltage matching calculation wired the related calculations estimate the number of cable socket estimate the number of fiber optic attenuation engine room. TV system user assigned Telecom equipment room area calculation the integrated wiring device configuration Example 9 engineering sample project overview and electrical equipment load to calculate electrical equipment load calculating transformer selection of their own emergency power supply capacity calculation of.…