Engineering Standards for Urban Road Lighting Projects of the People's Republic of China Specification for Construction and Inspection Of Urban Road Lighting Engineering CJJ89-2001 Chief Editor: Beijing Street Light Management Office Approval Department: Ministry of Construction of the People's Republic of China Implementation Date: November 01, 2001 1 General 1.0.1 This article clarifies the purpose of this regulation. The development of this regulation can effectively regulate the construction of urban road lighting, and guide the national industry to adopt economical, energy-efficient street lighting equipment and equipment in urban road lighting projects. It can adopt advanced technology, scientific and reasonable installation process to improve project quality and economic benefits. The improvement of project quality can ensure the safe and efficient operation of street lamp facilities, better serve urban traffic safety, serve the convenience of citizens, and serve the beautified city, thus receiving higher social benefits. 1.0.2 This section specifies the scope of application of the procedure. China's vast territory, the north-south temperature, the geographical difference between the east and the west is very large. When implementing this regulation, the contents that are not hard-coded can be flexibly controlled according to local conditions. In urban road lighting projects, the voltage level of 10kV is usually called high voltage, and the commonly used 220V and 380V below 1kV is called low voltage. 1.0.3 Properly transporting and keeping lighting equipment to prevent its performance change and quality deterioration is one of the important aspects of lighting engineering construction. 1.0.4 Before using the lighting equipment, it should be inspected to provide conditions for smooth construction. 2 Overhead lines 2.1 Electric poles and cross-arms 2.1.1 Overhead lines During construction, due to the influence of terrain, environment, underground pipelines, etc., the situation is not exactly the same when the positioning is not exactly the same as the design position. It is necessary to propose appropriate tolerances for local conditions. 2.1.2 The depth of the pole is very important. In practice, subject to objective conditions, there are facts that cannot fully meet the design requirements. To harmonize standards, emphasis should be placed on design requirements. 2.1.5 The high voltage load referred to in this regulation is the cross arm on the 10kV main line, and the low voltage load refers to the cross arm on the 380V and 220V main lines. 2.2 Insulators and pull wires 2.2.1 Insulators are important in overhead lines. In addition to ensuring the quality of the project, pre-installation inspection is also a necessary condition for safe operation. 2.2.3 There is a lot of experience in the use of insulators in various regions. Which type of insulator listed in Table 2.2.3 can be used depending on the location and line size. 2.2.6 The cable should be installed on the stress point of the line, and the position and direction should not be biased. Otherwise, the line will be skewed or even cause equipment accident. 2.2.7 The provisions on the vertical distance of the horizontal cable across the road to the ground shall be no less than 6 m. In recent years, due to the widening of roads and the increase of vehicles, especially for large-scale material transport vehicles, it has been requested by the transportation department to drive on the roadside. If it is still not suitable according to the road pavement center, this article will be done on the horizontal cable crossing the road. Further regulations. 2.2.9 The upper end of the pull wire in Table 2.2.9 refers to the connection part between the pull wire and the pole; the lower end refers to the connection part between the pull wire and the pull bar; the wrap is the tie wire that binds the lower end and then tangles on the pull wire. Each pitch (ie, one winding) is about 70~100mm. 2.2.10 Pulling the cable to install the insulator is to prevent the device from burning or causing personal electric shock when the cable is pulled to the high voltage line. 2.2.11 Anti-sinking measures are usually at the bottom of the mast to cushion the chassis or other solid material.
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