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Hangzhou, a residential meter circuit aging "bang" sound 15 all exploded

2011-08-16
 
Meter were burnt beyond recognition. Readers WENDI used cell phone cameras. 
Zhejiang Online News June 22 
Meter Box unit explosion, 15 meters beyond recognition, the flames continued to burn 1 hour, explosions continue. Area residents gather one after another to fire, to help ... ... 
June 20, Hangzhou Tsui East 2 meter blast occurred, the old district meter circuit aging "hardware" Malpractice and the old neighborhood full of human touch "software" advantages of comparison, if a film is full of dramatic conflict marketplace, Also compact and has thought-provoking. 
The entire unit 15 meters, leaving an entire burned 
7:55 am on June 20, a pleasant Saturday morning, who lives in the Second Area with Tsui East Building 3 Unit Huang Xiaolin lazily sitting room couch watching the newspaper. 
Suddenly, a huge, heavy sound came. "It’s like a heavy drag on the ground, can someone move? Are too loud point." Huang Xiaolin was thinking of, find air-conditioning stopped. 
Unconsciously, she opened the door, the corridor filled with smoke, pungent, choking, nausea from the smell of plastic burning smell. She looked down from the house windows, open space outside the building has been standing more than 10 neighbors. Crackle came downstairs from time to time, someone’s on fire? 
6th Floor, Chow had wanted to downstairs residents fled, but about the stairs, smoke so that he can not see the road ahead. Emergency, he switched to the top floor, think through to the next cell floor. At this moment of escape, he found a piece of wood roof access is blocked. "Flat to pitched, the top floor of a loft on the form. Area plywood made unauthorized use of the wall, a wall separated with a wooden block the escape routes, so." Chow told reporters hurled. 
10 minutes after the fire, smoke smaller, Huang Xiaolin and covering a piece of wet towel and fled down the stairs to see the meter box jump up out of more than 10 cm high flame. 
Huang Xiaolin’s daughter, 14-year-old, excitedly said: "The fire charred twisted meter box, looks like Hong Kong films in the wreckage left by car bombs, with smoking the top." 
The entire unit of 15 meters, a not stay to be burnt. 
Until 4:00 pm yesterday, the reporter saw at the scene, put the new meter cell Despite the box, but walking in the hallway, still can see the blackened walls, smelt a smell of rubber burning and explosion arising white dust with four on the fifth floor and the aisles have handrails. 
Huang Xiaolin said: "To flush, brush in order to get clean." Dust on the Indian people to escape when the panic over the footprints, noodle to overlap with. 
With the help of dozens of residents, some of fire extinguishers and some take place to move car 
"Building the meter box unit exploded! 4 buildings with no electricity, and we quickly down the stairs!" Aunt Zhang has ran downstairs neighbors, anxious to the building to a neighbor shouted. 
Down run upstairs residents, but residents of neighboring buildings have gather, bring along a small plot of 3 ran dry powder fire extinguishers. "Two of them broken, and really when Jisha." Linda Bo said. 
Buildings next to the money, Mr. Wang, 80-year-old grandmother is coming to Return Weapon. 
"Using irrigated! Community fire drill, when taught." 
"Looking for mud and sand for fire fighting." 
We anxious lost in a fog, but could only watch helplessly chaotic flames leap up, waiting for the firefighters arrived fire. 
Gudang Fire squadron arrived, and north of the city power supply bureau staff rushed to the scene ... ... next door unit when a guy really well, first rushed to the door leading the way district, then moved around downstairs called car drivers car, and finally reversed away from the fire meter box is only 12 meters from the place, to help with the fire. 
Meter also issued a "crack crack" as the crackling, the young mother very worried, and kept saying: "My son, not to the past ah, be careful -" 
Around 9 o’clock, a large dry powder fire extinguishers fire squadron into battle, the fire was put out at once. 
"Really quite impressed when, next door units, buildings next door neighbor came to help, at least more than 50 neighbors Qi battle." Huang Xiaolin said, "truly feel ’distant neighbor is better than’, our house is the last century, eight, nine Age-built, old neighbor pro-ah. " 
Meter all burned, residents are worried how tariff calculation 
Meter was totally destroyed, north of the city altogether remove the power supply bureau staff meter, directly connected to wires. 9:30 am, near the three buildings with electricity. 17:00, Huang Xiaolin floor living unit also pass on the power. 
North of the city power supply bureau staff said: "The replacement of meter boxes and wires have been installed, simply install the meter can resume normal power supply, 22, is expected to be processed." 
But 15 meters, the part of the meter readings disappeared, the household electricity how calculated? 
Wang residents example, this month’s tariff consists of two parts, first part is before the explosion of electricity meter. After the explosion, the reading has disappeared. Power Supply Bureau staff north of the city, said: "Generally, we use the month of user regular consumption basis, in consultation with users and collect electricity fees up." Such as Mr. Wang on a total of 452 electricity 183 degrees, 3 degrees in accordance with electricity per day computing, June 1 to 20, the electricity consumption for the time being estimated as 20 × 3 = 60 degrees. If the other households in the past year, electricity consumption is particularly high five in June, the average annual power consumption can be calculated. " 
The second part is June 21, 22 days, the temporary wire connected to, simply, without a current meter can not measure power consumption - this is unit 15 people have encountered. North of the city power supply bureau explained: "After the meter temporary and links to the user’s normal power consumption as the base month, up close consultation with users electricity, up by closing time and date through the new form until the date of loading out." Algorithm and the first part of the roughly the same. 
Why the sudden explosion meter box? Engineer for the Electrical Safety Return Weapon 
Why suddenly caught fire and exploded meter box? It is impossible to determine the specific cause of the fire. However, experts Xugong Hangzhou Electric Power Bureau, north of the city engineer Queries about the power supply bureau so that the hot weather is the main cause of large power, they are given several possible fire, and for the safety of the residents to Return Weapon. 
- Wires overheating, short circuit fire 
Older residents decorated the table after the wire relatively thin, when the excessive use of electricity, the wire easy to heat, melt the insulation causing a short circuit, discharge led to an explosion. 
Return Weapon: Residents renovation, into the line (from the public list box to the user’s cable distribution box office) of the line core cross-sectional area should be at least 6 mm2. 
- Electric meter caused by excessive short-circuit 
Some residents will be renovated and air from the installation of the wire transfer large switching capacity, but did not change in time for the new meter, when the excessive use of electricity, the air switch can not trip in time, lead to meter heat, causing electrical insulation, causing short-circuit explosion . 
Return Weapon: User-installed capacity of the air switch or wire meter can not be greater than the maximum allowable capacity, such as excessive use of electricity, the air switch will trip power. If the meter capacity can not meet demand, available capacity increase operating room procedures for handling, replacement of large capacity meter. 
- May be guilty of the wrong mouse 
Mouse is just a example, the power of engineers and language called "animal short-circuit." Such as a mouse snapped the wire itself accidentally, one to catch the zero line, a catch line of fire, a "zero resistance." According to current × resistance = voltage, resistance small, the current becomes large, thus heating wire, short explosion. 
However, because more heat meter box, this could basically be excluded. 
Return Weapon: Meter boxes must be secured in peacetime, preferably locked. 
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地址:杭州市西湖区三墩镇西园三路八号 电话:0571-88308166 传真:0571-88052760 联系人:姚先生 手机:13705810781 网址:www.chwuxing.com

 
版权所有:杭州五星电子有限公司 技术支持:浙江盘石    浙ICP备10038271号
地址:杭州市西湖区三墩镇西园三路八号 电话:0571-88308166 传真:0571-88052760 联系人:姚先生 手机:13705810781 网址:www.chwuxing.com