The device of automatic shutdown of the boiler with an increase in power consumption. Recommendations for the installation of UAO for boiler

There are a large number of automatic shutdown devices. During the operation, they protect household appliances, electronics and even save life. You will learn about what devices, what are their features, pros and cons of use, how to choose the device, recommendations for the UAA installation for boilers in the article.

The principle of operation of the automatic shutdown device

The use of a special automatic shutdown device is important and appropriate in cases where many electrical devices work in the dwelling. There are several varieties of protective shutdown machines:

automatic circuit breakers;
differentiated shutdown devices;
differential circuit breakers.

In order to maintain the integrity of the electrolyte and to protect users from electricity damage in case of violation of the integrity of the wiring, automatic circuit breakers (AB) are recommended.

Protective shutdown devices (RCD)- will prevent the development of fire during a closure, violation of the integrity of the wiring. In the case of an electric current difference, the protective shutdown equipment can be canceled. This design is not able to protect against short circuit, sharp voltage jumps. The active use of the protective shutdown device in our time in the presence of a large amount of expensive equipment is extremely desirable.

Differential circuit breakers (given) - have some functional features of the RCD and AB. The ability of a differential circuit breaker is based on the prevention of overloads in the mains and preventing shock during contact with parts of the livestock.

How to choose the right protective machine

To understand the existing variety of designs and choose the right one, you should remember the following:

the circuit breaker protects the wiring of the lighting system;
the differential circuit breaker protects the outlet part of the network: turning on the refrigerator, computer, stoves.
washing household appliances should have their own outlet and individual circuit breaker with differential protection;
power equipment must be connected to a circuit breaker.

The circuit breaker requires installation at the input. Protection of the outlet line is provided by automatic circuit breakers with differential protection.

Now that in every house there is a considerable amount of expensive household appliances and electronics, the wiring is undergoing a large load and protective automatic shutdown is extremely important. Savings on protective equipment can lead to such serious consequences as failure of expensive equipment. But the most valuable is human life.

The scope of using the protective shutdown device

The protective shutdown device is used in electrical technology with a voltage of three hundred eighty and two hundred twenty volts.

The RCD is used to prevent electric shock. Along with this, the device protects from cases of fire due to damage to the wiring, violation of its integrity, malfunctions in the devices. In practice, it is proven that it is precisely the device of protective shutdown that can save the life of a person in contact with the live part of the device.

In the literature on labor protection and safety measures, there is information about the influence of a certain current strength on the human body and about its reaction:

there is a current strength of about five miliamps;
non -traffic (spasmodic compression of the hand around the subject) - about ten miliamps;
paralysis of the respiratory system - about thirty miles amperes;
irreversible processes- internal bleeding, cardiac arrest- about fifty miles amperes;
fatal outcome - with a current strength of about a hundred miliampere.

Protection should already be carried out from a voltage of ten miliamper.

Two existing categories of RCDs are distinguished:

electromechanical;
electronic.

In order to correctly opt for a certain protective shutdown device, it is advisable to take into account the two main parameters:

rated current;
take of operation.

The RCD is used independently or in parallel with grounding:

in mobile electrical installations;
in stationary installations to ensure protection when working with manual power tools;
at installations on which stain is inappropriate.

The scope of devices, with an increased threat of electric shock, is limited. The designs are massively common where there is a danger of contact with the current -consuming parts of mobile electrical installations, manual electric tools and the like.

Turning off is carried out by a high -speed protective mechanism, the sensitivity and speed are ahead of the automatic devices - switches.

How to choose a device for a protective shutdown of a boiler

During the period of using the boiler, the protective shutdown device is invaluable to prevent electricity blows.

Boilers used now should be divided into two leading types:

cumulative boiler;
facial boiler.

From the side of protection against electric damage, the ability to consume power and the principle of action are important. The RCD is chosen based on two factors: the power of the water heating system and the distance from the place of water fence. Even if the boiler is equipped with grounding, the RCD will prevent damage to the human current. When connecting an RCD, grounding does not act as a mandatory requirement, but its presence will be an advantage of the electrical protection system. When using the boiler, the RCD device is much more valuable than grounding.

For a storage boiler, a protective shutdown device occurs at sixteen amperes and ten miliamps or RCS of sixteen amperes and thirty miliamper.

For a running water heater, which is a great danger from electrical protection. The RCD is recommended for ten miliamper.

It is necessary to connect an RCD to a boiler for a number of reasons:

prevention of shock;
exaggeration of electricity;
reducing corrosion.

Installation of a protective shutdown device

Building the device usually does not cause difficulties. There is a special built -in rail on the brush and
holes for the elements of the machine.

The task of the protective shutdown device is to suspend the supply of electric current when breaking through the current to the device housing. The grounding scheme is the same. They de -energize the system in different ways, but complement each other well.

If the RCD is installed for single -level protection, then a powerful automatic machine is selected for these purposes. Such a scheme is compact and satisfied is simple. But the downside is that the RCD will work with a malfunction of one of the devices. And finding out which device may not be easy. You will have to check each device single -level protection is installed for emergency shutdown of the water heater.

If the RCD is set for multi -level protection, then the cost of the structure is much higher and it is more bulky. The positive side is that in an emergency, not the entire apartment is de -energized, but a separate autonomous site. It is preferable to install differentiated switches in such areas in the apartment:

in bathroom;
in the kitchen;
in the basement;
in the garage.

The price of such a system is much more expensive, but you pay for your calm, comfort and security.

Sometimes, when connecting, errors happen:

interweaving of conductors - the system is triggered without objective reasons;
the amateurish connection sometimes causes a violation of safety standards, if the current is incorrectly connected, it can hit the neighbors through the boiler;
incorrect connection of neutral and grounding bypassing the RCD, this can lead to dangerous voltage in the devices.

How to correctly connect the device for the protective shutdown of the boiler can be viewed in the photo in the article.

It should be remembered that the machine should be installed by a specialist. If there is no opportunity to use the services of an electrician, you must follow the following recommendations:

Buy a sufficient number of machines and protective shutdown devices. It must be remembered that the switch should be more powerful than the machine. The RCD should be designed for values \u200b\u200bthat pose a danger to human health and life.
With a large area of \u200b\u200bthe apartment and complex wiring, it is more advisable to install two protective shutdown devices, otherwise false operation will occur on one RCD.
In the bathroom, you should install the RCD threshold of the shutdown of which is ten miliamper.
The installation of a differential switch before the counter is prohibited in order to prevent an unauthorized electricity fence.
RCD for sockets requires installation of an assault rifle for sixteen amperes.
For the safety of the system, you should install a two -pole machine in front of the counter.
Connection of the RCD requires the instructions and match the inscriptions on the device case.
The differentiated circuit breaker should be located in an inaccessible place for children and strangers.

Advantages of the boiler shutdown device

Drive the consumption of electricity and not overload the system will help the device for automatically turning off the water heater. The backbone of the device is a transformer that, together with the accumulative capacitor, is combined into a measuring node with a diode. The design contains the following elements:

transistor;
limiting resistor;
shunt of leakage;
light;
zener diode;
potentiometer.

With an increase in the voltage, the resistor circuit is triggered, the heater is disconnected. The LED reports this a sunbathing light. The ignition of the LED indicates the receipt of electricity to the water heating device through an automated device. In case of failure of the boiler, he begins to work with a two -polar switch.

The design of the protective shutdown is designed to automatically stop the power supply from the mains after raising the permissible indicators of the electricity. The RCD and the fuse are characterized in that the fuse is triggered during a short circuit, and the RCD when the electricity is switched to the device case. There are devices with the ability of the fuse and the device of protective shutdown.

The functioning rule is simple: a comparison of the indicators of the incoming and outgoing current, with a difference of thirty miliamper, the circuit will be open automatically.

Among the reasons why the protective shutdown device is triggered for the boiler, the following are distinguished:

the contact of a person with a current -consuming part;
the contact of a person with the ground;
violation of the integrity of insulation;
replacement of conductors;
the loss of zero and the contact of a person with a live part.

For the following reasons, the device is triggered:

failure in the protection system;
replacing conductors.

It is impossible to independently repair such a complex system as a protective shutdown device. Professional knowledge is necessary for the repair. More often, the device is not repaired, but replaced with a new one.

Reducing the energy consumption of the boiler is a very important question that concerns each consumer of electricity.

To save costs for heating water, water consumption should be reduced and followed by such simple rules:

eliminate leaks, if any;
install special plumbing with a minimum water fence;
choose the right shower booth with a waste of water no more than nine liters per minute;
install the aerator;
take a shower, abandoning the bath;
to replace the accumulative water heater with a test;
process with insulating materials two meters of supplying and removing pipes;
reduce the temperature of water heating;
delete the precipitate, systematically draining all the water;
purchase a boiler with programmable water heating functions;
install heat traps.

Automatic shutdown devices help save the devices with sharp voltage surges and help maintain life and health in case of non -standard situations.

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