I. Overview of the Project
The project is located in Yumin South Road to Fuyun South Road, Jiading District, Shanghai. The building area is about 24,000 ㎡, the structure type is frame structure, and the standard height is 2.9m, with a total of 16 floors. The construction party provides a 630kVA transformer (main distribution room) as the electricity for site construction. On-site facilities include three tower cranes, a steel bar production shed, a wood processing workshop and other electrical equipment.
Project owner: Shanghai Jiading Urban Construction Investment Co., Ltd.
Designer: Shanghai Oriental Architectural Design and Research Institute Co., Ltd.
Supervisor: Shanghai Huashen Supervision Consulting Co., Ltd.
Second, the field exploration situation
There are 10kV overhead wires passing through Room 5 and Room 8 in the construction site of this project. In order to ensure safety, according to the requirements of JGJ46-2005 Technical Specification for Temporary Electricity Safety in Construction Sites, protective frames must be set according to the specifications. Other facilities that do not interfere with the construction are not considered, but they must be set according to the specifications. In the process of construction, if other external power lines are erected or other facilities that hinder safety appear, protective measures must be taken in time.
Third, the basis of preparation
According to the national Technical Specification for Temporary Electricity Safety in Construction Site (JGJ46-2005); GB50 194-93 Safety Code for Power Supply and Utilization in Construction Site; Layout plan of the construction site; Configuration of construction machines and lighting appliances; On-site investigation; The general plan of the construction site, relevant manuals and atlas.
Four. The position and direction of power incoming line, main distribution box and distribution box are introduced into the main distribution room from a power supply on the east side of the office, and connected to the K2 distribution box and K 1 distribution box on the east side of Building 5 in two ways.
Three-level distribution box is equipped with distribution box according to component requirements.
The specific location can be found in the temporary construction electricity layout.
Verb (abbreviation of verb) Calculation of total power and selection of conductor section
(a), transformer to the total distribution box power consumption calculation
According to the actual situation on site, the main structure stage is the peak period of electricity consumption;
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