"the total emptiness of a floor cannot be opened and closed (there are 20 rooms on the floor) it is suspected that the fire of the branch switch of a certain room has a short circuit fault, what should I do? The most advanced and avant-garde treatment methods are announced.
This is a thorny problem because it has almost reached the limit of difficulty [electricians stipulate that the number of lamps and sockets should not exceed 25 for each single-phase circuit in the lighting system. ] . This means that if the floor is particularly large (for example, if there are as many as 40-50 rooms, then one floor can not be used, 2 or 3 total open rooms should be set up) to set up two empty open jurisdiction. ]
This is a challenge to the "efficiency and patience" of electricians who come to repair and troubleshoot.
Large regiment combat, the scale of the campaign level? Is the resistance measured by the multimeter ohmmeter divided into segments (cutting off the main line)? Have you all seen the hand refurbishment, disassembly and disassembly? Will all the shinkansen and shinkansen branch lines be replaced? Do you use GPS centimeter positioning? Do you use Beidou centimeter positioning? It is futile to check for short-circuit faults in GPS, and Beidou is also weak. What are we going to do?
Forced power transmission, the original "fault line fire plus zero" is all used as the main part of the new zero line (fault zero line, slightly higher resistance zero line is used for operation). It takes skill and means to forcibly send electricity, which is also one of the secrets to be announced in this article: remove the original empty fire wire under the fire, and the removed fire wire is insulated from a newly installed socket wire, and the empty terminal of the fire wire is connected and tightened with another wire of that socket. The socket is ready to plug in an electric load (such as a 20W soldering iron, or a 200W soldering iron, or a light bulb, etc.), so that the power can be forcibly delivered, guaranteed to be on, and guaranteed not to turn off. This is part of the step of detecting the fault, and it's not over yet. )
The electricity was forcibly sent on, and the gate did not fall off. What will be the effect? What can be done to achieve what purpose? Aim to find out the fault and find out the fault accurately! -- this method can quickly find the fault point-- the ultra-centimeter level can reach the "mm level".
It is more advanced than the back fight. ] .
At this moment, I can't help thinking of a chess book called "coming out of the Hole without an opponent", and it is hard to find an opponent in the past two years or a few years. I wish this, but also hope that there is a way to surpass it.
Dozens of meters long trunk line of many branches (the hot part of the branch switch), how to catch this hidden secret agent (short circuit fault point)? This is another key and the second secret of this article: use a clamp ammeter to measure the current and catch the short circuit point from the change of the current distribution.
This may involve "the theory of the first derivative", and return to "to reduce the dimension" after raising the dimension. This is a little too high.
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Repeat what is important, or even say it three times: changes in current distribution
[changes in current distribution].
This change is the short-circuit fault point or short-circuit branch!
A floor area of more than 200 square meters, the trunk line is dozens of meters long, the difficult part is from dozens of meters to one or two meters, one or two meters to centimeters and then to millimeters is too easy.
Using the change of current distribution to catch the short circuit point is the key to this working method. Being able to reduce the range of dozens of meters to within two meters of the trunk line (or a branch route) is equivalent to "Goldbach's guess that Chen Jingrun has completed the reduction of 1: 2," which is close to the success of 1: 1, but it is a pity that Chen Jingrun left before it was finished. However, after narrowing the dozens of meters of trunk line to within the scope of the two-meter trunk line (or a route), almost all electricians who want to repair the fault will not find the rest of the work difficult to do. will no longer be difficult (will smile knowingly-victory is just around the corner), free man electricians who have good wine and are not bound by the regulations can drink first. A little bit. Do not drink what is prescribed, and try not to drink it for a long time, because you will soon be able to eliminate this problem and finish it. Right away, soon, very soon. No, no, no.