browsing information on the Internet, found this interesting case: "Posting is not very old, just 4 or 5 years, but has recently turned on the light in the room - now do not turn off even when the wire is disconnected from the switchas well okay it works everywhere, machines do not knock. "After some thought, I decided to present views on the connection circuit breakers and their modern versions.Suddenly, someone will come in handy in cases of life are different ... And what they know, these same switches, how to choose, how to put not only be electricians.The point is not complicated, so why give up their "blood" for the work that you will be able to easily do?
- device switch
- Types of switches
- Push button
- Passing switch
- button sensor
- Smart Switch
- protection and safety
- Defferentsialnye relay
To begin to understand the principle of the switch.By name it is clear mission: to turn off o
mount will not be considered, but the device analyze.The main part on which are fixed copper contacts, the photograph is made of plastic.Outset - it is better to buy a ceramic, is not deformed by heating, fire safety will be better than that of plastic.3 appear on the image output by fixing wires.At the top you can see a single terminal with a metal bar that allows for switching position to lock the two groups of contacts.Make sure you connect, make sure that you switch the phase (a fairly simple procedure, you will need a screwdriver indicator, which attach to the wire by the presence of luminescence make sure that phase).After testing phase on the switch, be sure to turn off the machines near the counter, in order to avoid electric shock.About the safety and caution, do not forget - all ended well.
So input wire from the box to the phase is attached to a single contact.The remaining two pins - is wiring for lighting.Fasten the wires to the terminals, fixed in the switch box and use.Principle switches almost identical, capture the essence of a simple switch - easy to understand, and others.
Types of switches.
And to understand what there is, as the market offers a huge selection of switches.From a conventional keyboard to "smart" switches.Consider the order.
Perhaps the most common type of circuit.The principle of operation of the switch based on the throwing plate (rocker) in two positions, in one switching contact in the other opens.Rocker switches come in two, three chain.For the convenience of the user can be mounted LED, very convenient and practical solution.With such a switch is not necessary to hand over the floor to search the wall that used to find it.
toggle switch different from conventional large number of contacts, or rather one.This is due to its destination.When switching circuit in the pass key switch is not broken, and switches to the other wire.As seen in the above diagram below, such switches allow you to control switching - off lighting in different places of the room.For example, between floors of the building on a ladder or in rooms having a greater length.
From simple to complex move.The latest models of circuit breakers is not a simple key to opening the circuit - it is a high-tech product designed to create maximum comfort conditions in the building.These switches include:
- touch switch;- "Smart" switches;
- switches with timer;- The circuit breaker;
- differential switch.
Let's take a closer look at each of these types of switches.This will allow us to see how they can enhance user comfort.First on the list is a touch switch with him and begin.
This, in essence, a semiconductor device that includes - off lights depending on the proximity of finding a man.A characteristic feature of this switch is the lack of mechanical components.Correspondingly higher degree of reliability.Some manufacturers in the sensor switches is inserted IR - sensor that allows you to manage them from your sofa, using any household remote control.
Standard touch switch contains:
-sensitive element - sensor, depending on the design may be an optical, infrared, photo diode, etc .;
- semiconductor circuit, analyzes the information from the sensor and sends a control signal to the switching part;
- switching part is responsible for the inclusion - off the main circuit lighting.
Connecting these switches does not cause any problems, so details on this will not stop.We only note that it is not necessary to connect additional wires or a separate power source.If you installed a conventional rocker switch - install and touch.
should say a few words about the switch for facade lighting.The photodiode is used as a sensor which reacts to the degree of illumination, and depending upon it comprises lighting.Very practical and handy device, even in your absence when it is dark facade lighting switch is turned on, and when they return home will not have to wander around in the dark in the yard.
Now for the "smart" switches.In many ways they are similar to the touch switch, in which they - extent can also be so characterized, but "smart" have a number of specific features:
- allows you to adjust the brightness of the lighting, and the switch "remembers" your preferences;
- control is like a hand, or remotely, using radio frequencies, so there's no need to be within sight of the switch (switch can be remote from the other room);
- ability to specify ranges of inclusion - off the lighting, so-called circuit breakers with timer;
- the possibility of combining a group of switches and embedding them in a "smart" home.
As for the cost of such devices is the price they are quite accessible to many citizens.The average price of these devices 10 - 15 dollars apiece + desirable remote, it costs up to a maximum of $ 20.Such switches are mounted in a conventional box, do not require additional wiring.One feature on switch will need to apply more than one phase of the switch box, and two, as the device is powered by a 220V.But it is fairly easy to do, especially if the switch down three or more wires.
As we can see, the market offers switches for every taste and material wealth, what to choose to decide, of course, you.But there are two kinds of switches that are essential in the building.It is automatic and differential switches.Their mission - to protect your home and equipment located therein.Let us examine it more closely.
protection and safety.
breaker, aka packet switch is designed to protect against short circuits in the network.What causes the wiring circuit is well known.The thing is necessary, therefore, consider the principle of operation of this device.Circuit breakers have two types of protection: Short-circuit in the wiring and overload the network.
Overload protection is ensured by the presence of a bimetallic plate (5).When exceeding the nominal current packet switch plate begins to heat after a certain time interval which depends on the magnitude of the overload current, the plate is deformed and the open circuit occurs.Over time, the plate cools and returns to its original form, but the unit switch is made so that automatic switching does not happen.The user has to pay attention to the problem and take steps to eliminate the cause of network congestion.Turn on the machine, you can only manually.Short circuit protection is performed by the solenoid (7).If a short circuit current increases sharply, consequently the current flowing through the solenoid increases.If you exceed the current in 2 or more times the rated current of the machine, there is a "retraction" of the core and break contacts, the circuit is broken.As in the first case - including repeatedly performed manually.
Now as to the choice of a packet switch.Breakers characteristics are varied and choice should be made based on your needs.It all depends on how much power consuming equipment in the house.It is necessary to sum the power of all appliances, including lighting.Calculation of the current machine determined by a formula which has already cited above: P = UI.Consider an example: the room in which you plan to use the computer (~ 450W), iron (1500W) and lighting (150W).Total obtain 2.1 kW, divided by the voltage is 220V, and get current - 9,5A.The circuit breaker for the protection of this room take at least 10A, should not be greater, too, if you do not plan to use the extra voltage consumers.
And the last type of circuit breakers - differential switch or differential relay.Designed to protect against short circuit, overload the network, protect against fire, protection against electric shock as well as the breakdown of the current-carrying conductor to the ground.The response time of the relay is 0.4 seconds, which is guaranteed to save lives when hit by stress.Features similar to the selected switch circuit-breakers, but with nuances ...
volume article is limited and, therefore, to consider the principle of operation of this type will not switch, it will probably be our next article.For now summarize the above.Select and install the switch is not as difficult as it seems, the most difficult is the situation with the connection of the last two types of switches.Here you no electrician or experienced person who has already installed such equipment can not do.Because in addition to the features necessary to connect the machine to take into account the fact that not all will be able to disconnect the entry into the apartment, and, therefore, have to be connected under voltage.In no case do not do it yourself, is fraught.