Can I use 220v for elevator shaft lighting? Are there any regulations in the country?

ID = 1 0/4 About the lighting design of elevator shaft in Xu Xiufang I. Relevant regulations1Paragraph 5 of Article 4.2.5 of Code for Acceptance of Construction Quality of Elevator Engineering (GB 503 10-2002) stipulates: "The shaft shall be provided with permanent electric lighting, and the illumination in the shaft. 2. Paragraph 2 of Article 9.4.5 of Code for Electrical Design of Civil Buildings (JGJ 16-2008) stipulates: "Lighting shall be installed in the shaft, and the illumination shall not be less than 50 lx, and shall meet the following requirements: 1) A lamp shall be installed within 0.5m from the highest point to the lowest point of the shaft, and a lamp shall be installed at intervals not exceeding 7m in the middle. 2) The lighting power supply for the car roof and shaft should be 36V；; When 220 V is used, residual current action protector should be installed. "Second, the problems that should be considered in the design 1, the choice of lighting voltage: Because the elevator shaft is a narrow workplace, in order to ensure the safety of construction and maintenance personnel, 36 V safe voltage should be preferred; However, when the shaft length exceeds 50m and approaches or exceeds 100m, in order to reduce the voltage loss and ensure the lighting quality, the lighting voltage should be 220V. At this time, a 30mA instantaneous residual current protection device (RCD) must be installed to prevent personal electric shock. 2. Selection of lighting source: When using 36V lighting, the only choice is incandescent lamp, because 36V voltage cannot start gas discharge light sources such as fluorescent lamps. It is said that a compact 36-volt energy-saving fluorescent lamp has recently come out. If it is realized, it can be preferred. 3. Selection of incandescent lamp power: According to the lighting design manual, there are five levels of incandescent lamp power of 36V: 15W, 25W, 40W, 60W and 100W, and 60W should be used in design. If 100W is used, attention should be paid to fire safety during installation and use due to the high calorific value and high temperature of the lamp holder. 4. Lamp spacing: In the above two specifications, one does not require lamp spacing, and the other stipulates that one lamp should be set every 7m, so it cannot meet this requirement and the requirement that the illuminance of the shaft should reach 50 lx. Because through calculation, when using 60W incandescent lamp, only one lamp every 3m can basically meet the lighting requirements. 5.220V/36V lighting transformer capacity determination: It should be estimated as (axis length ÷3)×60W, and then consider the power factor of 0.8. For example, when the shaft length is 50m, a lighting transformer of 1250VA is needed. And the transformer must be a safety isolation transformer. 6, 36V lighting socket should not set PE line. See Article 7.2. 13 of the Design Standard for Building Lighting (GB 50034-2004) for details, which stipulates that "safety isolation transformer should be used for safe ultra-low voltage power supply, and its secondary side should not be protected by grounding" to prevent high voltage from invading the ultra-low voltage side and causing insecurity. 7, 36V lighting socket should be equipped with protective appliances, conductor section selection should be coordinated with the protection switch. 8. If the lighting pipes in the well are exposed, fire cables and fire protection pipes should be used. See article 3.3.7 of Code for Design of Distribution of General Electric Equipment (GB 50055-93). 9, located in the elevator room and the lighting switch in the shaft should use double control switch. The above is mainly aimed at the 36V lighting scheme. If 220V lighting is used, the situation will be much simpler, so I won't repeat it here. Third, when examining the drawings, it was found that the common problem in design was 1. Regardless of the voltage loss of the lighting circuit, even the super high-rise building adopts 36V vertical shaft lighting, regardless of the length of the vertical shaft. 2. The light source does not match the voltage, but the 36V lighting voltage adopts compact energy-saving fluorescent lamp. 3. Only pay attention to the 7m spacing, ignore the illumination requirement of 50 lx, and choose the light source power at will without calculation. Many people choose 25W or 40W incandescent lamps to be installed at a distance of 7m, which is far from the illumination requirement of 50 lx. The 4.36V lighting circuit is not equipped with overload and short circuit protection, and many people add a PE line by mistake. Summary: The design of elevator shaft lighting seems trivial, but in fact there are many problems. It is hoped that colleagues will communicate more, deepen their understanding of the specifications, improve the design quality, and ensure the normal construction and maintenance work and personal safety. 2009.3. 12