1.1.2 The state of the accident caused by the danger of ordinary incandescent light bulbs should be no less than 2 calls from the ground and in places where collisions may occur. The bulb should be protected by gold or other net cover, and the splash-proof device test proves that the 300-bulb bulb is crushed by external force during normal use, which can ignite the quilt cover under the bulb. When the bulb life is approaching, the filament is thinner and the temperature is thinner. increase. If the grid voltage fluctuates upwards, and the magnitude of the addition is as large as 20 or more, arc discharge will occur at the junction of the filament and the guide wire. It may also cause the bulb to burst into an arc temperature of up to 3000. The wire joint was partially melted into a metal-melted bead test to prove that 150 Jia 200 Jia and 300 Jia's ordinary incandescent lamps were respectively 1.5 at 1.8 and 2 at 1. The arc was released, and the formed gold fused beads or Blake blasted and flew. Residues such as filaments and guide wires ignite the fire hazard of the following quilt cover fire 12 fluorescent lamp fluorescent lamp. The main cause is the fire caused by the overheating of the locker, but the fluorescent ballast will often overheat. The insulating paint skin burns and causes a short circuit. For example, on August 12, 1993, a large fire broke out in the business hall of Beijing Longfu Building, and a large number of commodities and counter shelves were installed. The direct economic loss amounted to 21.49 million yuan. The original fire was the lamplamp of the container department. A short circuit has occurred in the internal coil of the unit. The ignition of the surrounding flammable materials and the occurrence of fire products are poor or long-term, which will damage the internal coil insulation, reduce the insulation performance and follow the short circuit between turns, reduce the number of turns of the coil, reduce the resistance, and increase the internal temperature. The iron core is loose and the wire is heated, and the water is drained and the external flow is fired. If the lamp starts badly or flashes for a long time, the current will increase, causing the ballast to overheat.
If the power supply voltage is too high or the ballast power is too small, the ballast will overheat and the ventilation in the lamp holder will be poor, causing the ballast to collect heat.
Probation proves that the ballast of the catastrophic light caused by the various corpses of the corpse is overheated, and the wire paint can only be insulated and carbonized. The end of the plastic cover burns directly to ignite surrounding combustibles, including directly fixing the ballast for the ballast and the flammable fiber dust. In addition, the overheating of the fluorescent lamp ballast can easily damage the nearby wires and cause damage. Power line leakage short circuit and fire occurs 1.3 high pressure mercury lamp commonly used in mercury lamp pressure mercury lamp is relatively large, normal light bulb surface temperature is slightly lower than incandescent lamp, but the temperature rise is fast, and the heat is still higher than The big test shows that the temperature of the lamp is about 1800 250, and the incandescent lamp of the 什 招 招 招 , 什 什 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 Hazard and fluorescent lamp ballasts are also similar. 1.4 High-pressure sodium lamp High-pressure sodium lamp is a high-pressure gas vapor discharge bulb. The illuminant is an arc tube. In the tube, there is a quantitative amount of helium sodium and the circuit in addition to the ballast in the circuit. Usually, only the electronic trigger is connected in parallel at both ends of the bulb to provide the pulse voltage. After the bulb is started, the helium gas in the lamp is ionized, and the temperature of the discharge tube rises. High, sodium and mercury vapors participate in the discharge, while the light output, and gradually increase, after about 5 light output reaches a large value. It is a new type of high-efficiency and energy-saving new high-pressure mercury lamp that replaces the high-pressure mercury lamp. The fire hazard of the high-pressure sodium lamp is similar to that of the high-pressure mercury lamp. The difference is that the electric trigger in parallel in the circuit is generated due to internal leakage. Heat, mining, ring, resin packaging, heat + easy to leak, will be required for 4 burning requirements, called flame retardant ring, resin packaging, and must not be fixed directly on the flammable building components. 1.5 halogen tungsten lamp The temperature at work is very high. The maximum temperature for igniting the lamp is 250. The temperature of the outside of the glass tube of 1000 iodine tungsten lamp can reach 500 800, while the temperature of the inner wall is high, about 1600. Governance O recruits around, 缙, 彰, larger luminaires, + can only burn the combustible materials on the outer wall of the lamp in a short time, and its high-temperature heat radiation can also burn the combustibles at a distance from the lamp. There are still many cases of neon-induced neon fires. For example, on February 2, 1994, a fire broke out in the Ruby Hotel in Zhengzhou City, Henan Province, burning buildings 910, and the direct economic loss was 10.88 million yuan. The fire was caused by the renovation of the facade of the northwest corner of the building. In the insulated terminal of the high-voltage output of the transformer, such as dust and oil, the electric leakage will occur in the wet weather, the power consumption of the transformer will increase, the temperature will rise sharply and be burned, and it is easy to occur. In addition, the asphalt with low softening point is used. Sealed transformers, when used for a long time, will cause the asphalt to melt and overflow due to the temperature rise, and it will also cause a fire.
1.7 special effects of ballroom lights and floodlights commonly used special effects of the ballroom lights, such as honeycomb lamp scanning lights, solar lights, cosmic lights, two-way UFO lights, as well as snowball lights that do not emit light. The fire hazard is mainly due to the fact that these lamps are accompanied by an electric motor for driving the lamp to rotate, and the motor is not matched by the power and load, or the overload operation is lack of phase, and the high-voltage or low-voltage running winding coil insulation is damaged, and mechanical failure occurs. The reason is that the windings of the motor windings may be short-circuited or phase-to-phase, current, large heat, and even the burning fire spotlights are special lamps of the same type of incandescent lamps, and are classified into directional floodlights and pressure-sealed floodlights. As a kind of exhibition stage photography studio and photo studio, the power of the floodlights of the lighting fixtures is relatively large. When the temperature is high outside the working hours, the combustibles in the burning distance are also burned. For example, December 8, 1994, Karamay City, Xinjiang There was a fire in the Friendship Hall, 325 people were killed and 130 people were injured. The direct cause of the direct economic loss of 2.1 million yuan was that the stage was in the middle of the lower part of the lower side of the lower side of the é€ é€ é€ 1 1 1 1 1 1 1 1 1 1 , , , Preventive measures for 2 electrical lighting fires caused by the curtains 21 No, the environment should choose not the type of lighting fixtures. In order to reduce the risk of fire. 1 There may be explosive mixtures in the south or places where explosive media is prone to be produced in production. Explosion-proof lamps should be used. For the same level of explosion hazardous areas, different types of explosion-proof lighting fixtures should be used. In the case of 1-1 gas and special tidal places, sealed luminaires should be used. The various parts of the luminaire should also be treated with anti-corrosion treatment. Closed-type lamps can be used inside and outside the factory. Open-type lamps with waterproof lamp holders can also be used. It is best to use rubber insulated cords 41 for hot and dusty places, such as steelmaking and iron-making steel. Floodlights may accept eve machines, damaged places, and luminaires that protect the net.
In the vibration place where there is a forging hammer air compressor bridge crane, the lamp should have anti-shock measures, such as the use of soft links such as slings, etc. 2.2 Fire protection measures for lighting fixtures 1 incandescent high-pressure mercury lamp halogen tungsten lamp floodlights and flammable The proper distance between the flammable structures should be maintained, and should not be less than 30. When the power is large, the distance should be greater than 50,12 and paper is strictly forbidden. The cloth should be replaced by flammable materials. Prevent the burning of the filament 1 from combustible materials when it is broken. The lighting fixtures in outdoor or in a special place should be protected against the splashing of water droplets onto the high-temperature bulb surface, causing the bulb to burst, such as a flammable gas or dust. It is possible to detonate the fire power at 150 Hz and 100 or more. Other 嬴 嬴 å¡ å¡ å¡ å¡ è… è… è… , , , , 需 需 金属 金属 金属 金属 金属 金属 金属 金属 金属 金属 金属 金属 金属 金属 金属 金属 金属 金属 金属 金属 金属 金属 金属 金属 金属 金属 金属 金属 金属 金属 金属 金属 金属 金属 金属Direct force pull-off, the installation of the electric spark ballast should pay attention to ventilation and heat dissipation, it is not allowed to set the ballast to be placed on the ceiling or wall of the ten-burning ceiling, application, hot non-combustible material, away from the ballast and lamp The voltage and power capacity of the tube must match the wire near the tungsten halogen lamp tube. The sheath should be made of heat-resistant insulating material such as glass asbestos porcelain bead tube, and should not directly make the wire with flame retardant insulation. The high temperature of the lamp destroys the insulation layer, causing the power of the lamp in the short-circuit flammable ceiling to be unsuitable, and the space above the main lamp should be kept by incandescent or fluorescent lamps to facilitate the cooling of the concealed lamp and its heating accessories. Surrounding application + burning material asbestos board or asbestos cloth to do fire and heat insulation treatment. When the installation conditions are not allowed, the flammable materials should be painted with fire-proof paint. When the ceiling is used, the ceiling lamp should be covered with asbestos board or asbestos with various ballasts. The ceramic splint should be insulated between the lamps and the combustible materials. It is forbidden to directly install the motors of various special effects ballroom lamps on the flammable ceiling. It should not be in direct contact with combustible materials, and the fire insulation materials should be placed in the middle.
All the concealed ceiling mounted lighting fixtures stage concealed color fantasy 1 dance floor footlights power cords, should be worn steel 矜 喑 stage staged color bulbs pool footlights lights bulbs should be in the following, the maximum is not More than 60 wires should be welded between the colored lights, and the wires should not be in direct contact with the combustible materials. The lanterns installed in the large ballroom on the light steel keel are suspended by wire. The wire shall pass through the apron to protect the wire from the dragon bamboo, so as to avoid the short circuit of the wire insulation. 23 Fire protection measures for the lighting supply. The lighting switch lamp socket junction box plug and socket button and lighting distribution box are installed in the fire and explosion hazardous area. The fireproof and explosion-proof performance should not be lower than the type of lighting fixtures in the corresponding places. Before installing various lighting fixtures, the parts such as the lamp socket box switch should be carefully checked to prevent the contact failure. The overheat switch should be installed on the phase line screw light. The screw of the seat must be connected to the zero line. The outer casing of the socket of the switch socket should be intact, and the live part should not be exposed.
Light-duty lighting fire truck The light-duty lighting truck produced by Suzhou Jetta Fire-fighting Vehicle Equipment Co., Ltd. is a fire-fighting vehicle with advanced communication function modified by Iveco 3010 light passenger car. It has a fire field surveying machine operation file data collection and printing sound amplifier sound. Light alarm night lighting and other functions; the car has Honda 5.5 gasoline generator 2 652 sealed battery and people, company entrance, 3, digital automatic display each way to provide power, with automatic charging and short circuit over voltage protection function on the roof The electric lift light pole is a new generation product developed by our company's new materials and advanced technology. The rise time is 2, and the lighting is 3 iodine crane light or 26 cadmium lamp. Only 4001 moving light, all-round moving platform tilting ± 90, level 185, the highest lift 2,1 plus the height of the car up to 4,15, using wired mobile switch control operation.
4 lamps with the above weight, except for the ceiling light, the metal is hoisted to be supported by other metal objects to prevent falling. When it is more than 31, it should be fixed on the light hook keel mounted on the embedded hook or bolt. The load of the steel keel can not be increased. The weight of the lamp is 31 or less. It must be installed on the main keel. If it is 31 or more, it must be fixed with iron. 51 The place where the wall is decorated with combustible materials, the lamp switch power socket installed on the wall. The electric fan switch should be equipped with a metal junction box, and the wires should be laid with steel. It is required to be the same as the inner conductor of the ceiling. 6 special effects of the ballroom lamp should be checked before installation. The wiring of each part should be firm. All the bulbs are not connected to the power supply. The motor runs smoothly, the temperature rises normally, and the rotating part has no abnormal noise. 7 Darkness of important places For the installation of luminaires, all types of test specimens including fire and heat insulation treatment shall be made before the full installation, and then the relevant personnel shall be fully equipped to install a fire inspection manual. Shanghai Shanghai Science and Technology Press, 1987 2 lights and lighting. Beijing Light Industry Press, 1979 3 Wang Xiqing and so on. Technical guide for site investigation and appraisal of electrical fires. Shenyang Jiangning University published 4 Li, Hugh lighting fire, 5 sex analysis. Fire technology. 1å¯51. Research Institute of Electrical Fire, Assistant Research Fellow, Electrical Fire Causes Technical Appraisal Center, Fire Department, Ministry of Public Security, 0031, No. 7, Puhe Street, Huanggu District, Shenyang
The Zinc Oxide Type Surge Arrester is the latest advanced over-voltage protector for distribution line and power stationdevice. Incorporated with zinc oxide and other metal oxide as the core resistor disc, the volt-ampere characteristics and thethrough-current capability of the resistor disc are improved drastically compared with the conventional SiC type surge arrester.
Under nominal operating voltage, the current through the surge arrester is only about micro-ampere grade. When the surgearrester experiences an over-voltage, the resistor disc with excellent non-inear characteristics will increase the curent throughthe surge arrester to several thousand amperes instantaneously, The surge arrester is in a conducting state and then will releasethe over-voltage energy to the earth and thereby protects power distribution / transmission device against the impact of over voltage.
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