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 6 Safety protection 6.1 General provisions 6.1.1 The exposed electrical parts such as the pole power supply terminal block shall be provided with the necessary protection to prevent personal injury and equipment accidents caused by construction and maintenance personnel and pedestrians accidentally touching the electrical equipment. 6.1.2 After the metal parts of the electrical equipment mentioned in this clause are protected by zero or grounding, it can effectively prevent personal electric shock accidents caused by the insulation of the electrical equipment. 6.1.3 The grounding wire is an important device for protecting the safety of people and equipment. It must have sufficient conductive section and certain mechanical strength. Therefore, this article specifies the use of the grounding wire and must be strictly enforced. 6.2 Zero and ground protection 6.2.3 If the single-phase switch is installed on the neutral line, there is still electricity on the equipment when the switch is disconnected. Therefore, this regulation stipulates that the single-phase switch should be installed on the phase line. If the protection zero line is equipped with a switch or a fuse, the protection zero line may be disconnected at any time, resulting in a personal corner electric accident. 6.2.5 The grounding resistance of the grounding device is required to be less than 10Ω in order to minimize the voltage of the device to ground before the switching operation. 6.3 Grounding device 6.3.5 This article is formulated in accordance with the "Code for Construction and Acceptance of Grounding Devices for Installation of Electrical Installations" (GB 50169-92). It is an important regulation for the safety protection of electrical installations and should be strictly implemented. 7 Street lamp installation 7.1 General provisions 7.1.1 The street lamp installation height, elevation angle and lamp installation direction of the same street and highway are generally required for the continuous sections of streets and highways, special areas and level crossings. And overpasses should be specially considered. 7.1.3 This section requires that the excavation size of the foundation pit be consistent with the design, which means that the excavation foundation pit is allowed to have a positive deviation, that is, the foundation pit size is larger than the design size. For the basic plane height, this article does not make a rigid regulation. Considering the comprehensive requirements of urban planning for sidewalk slabs and greening, the basic plane height is determined by the design unit and the superior supervisory unit in the design documents. 7.1.5 This article “The efficiency of conventional lighting fixtures should not be less than 60%†is due to the test results of the universality of domestic lamps. Since the efficiency of lighting is important for the improvement of lighting level and energy utilization, it is worth fighting. Use high efficiency luminaires. 7.1.6 “Adjustable lamp caps should be adjusted to the correct position according to design†means that there are quite a few lamps on the market that can be used for two or three light source grades, such as 250W/400W universal type, 150W/250W/400W general type. Therefore, the inside of the luminaire should have a lamp head adjustment indication for the applicable light source. When using, the light source level should be used according to the design to correctly adjust the position of the lamp head. 7.1.9 In this section, “the fuses of each lamp shall be equipped with fuses†means that each light source that acts as the main illumination shall be provided with independent fuses, whether or not they are the same, so that they do not affect each other and work independently. However, the decorative light source installed on the same pole as the main illumination source, such as power less than 150W, can share the protection of the fuse and is independent of the protection device of the main illumination source. 7.1.10 The fuse ampere rating shown in this clause is determined by the fuse current class of the RLI type spiral wire fuse. If the magnetic plug type and other types of fuses are used, the melt grade can be configured accordingly. 7.1.11 The mixing of bulbs and ballasts of gas discharge lamps may cause accidents of burning bulbs or ballasts. Therefore, the provisions of this article shall be used together. 7.1.12 The standards used in this article are: GB/T 9790—1988 “Metal Coverage and Other Related Cover Layer Vickers and Knoop Microhardness Test†ZBJ 36011—89 “Steel Hot Dip Aluminum Process and Quality Inspection†GB/ T 11373—1989 “General Rules for Surface Pretreatment of Thermal Sprayed Metal Partsâ€
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