In most multi-storey buildings, stairwells usually have an electrical panel, where there are meters and circuit breakers for all apartments on the site. However, in detached houses and in the old fund, electricity panels often have to be installed on their own. And given the increased power consumption in our time, the installation of an electrical panel becomes a necessity.

You can purchase an electric switchboard with a single-phase electric meter and circuit breakers, either completed already assembled or assembled in parts. Personally, I recommend the first option to you, because finding such parts so that they all fit in the shield and can be securely fixed there is not easy.

Most importantly, before purchasing an electricity meter, you should consult your local energy sales department about this. That is, in a campaign that takes money from you for consumed electricity. The fact is that electric meters can be very different, both according to the principle of action, and according to their technical characteristics. This is mainly power and accuracy class. You need to find out these data in the energy supply from the controllers, write them down, and it is also advisable to find out the address of the store where these meters are sold. Usually, energy sales workers are willing to share this data, since then they themselves will be less trouble.

After you have decided on the choice of the meter, you need to first find out in the electrics store whether there is a ready-made panel with such an electric meter and circuit breakers (“automatic machines”). If there is, then you are lucky. And if not, then you have to buy everything separately. In this case, you will need: an electric meter, a shield (a box in which the meter and “automatic machines” will fit), circuit breakers (the number is determined by the number of power lines), a bar for installing “automatic machines” (din rail), a copper contact plate for connecting 8- 10 wires and 1 meter of copper three-core cable with a cross section of at least 2.5 mm for wiring ...

How to connect an analog voltmeter to a computer and highlight it.

Nowadays, high technology can often be found voltmeters / ammeters made in the form of an LCD indicator. But all this does not look as effective as an analog retro - a voltmeter flaunting on the front panel of your case! This article provides an overview and technical performance of mods in retro style.

The voltmeter is made in a traditional style and can work well with some cases. At radio bases, one can often see not only voltmeters, but also ammeters, which can also take place on the 5’25 plug. This voltmeter is capable of measuring DC voltage from 0 to 15 volts. This is what we need, because we will use a voltmeter as a 12 volt monitoring. Let's take a closer look. The lower part of the voltmeter is covered with a plastic cap. This technical maneuver is only for us - we can place a backlight under this cap ...

“The thunder will not strike - the man will not cross himself”, “Do not put off until tomorrow what you can do today”, “Forge the iron while it's hot” - these are well-known folk wisdom.

For centuries, people have felt the truth of these expressions on their own skin, regardless of what they were doing - they ate a mammoth in a cave or chopped cabbage at a flea market, planted rye in the steppes of Ukraine or gathered votes in elections ...

In addition to applying these proverbs to certain events, the meaning implied in them can be transferred to entire periods in a person’s life.

He postponed his studies, "put" to work - and the years go by, and the person’s self-realization does not occur.As a result, negative consequences are not ruled out - “looked into the glass”, “stepped on a cork” or simply missed the time, which is not enough, how not to hope, then when the “cancer whistles” or “the cock bites” ...

Electric meters are subject to periodic verification. According to the "Rules for the Use of Electric and Thermal Energy", the inter-calibration interval should be no more than four years for devices used in the ASKUE system (we will discuss this system later) and at least eight years for local electricity meters. Therefore, according to these standards, electricity meters must be periodically dismantled and attorneys installed instead.

It would seem that there is nothing complicated about this. But imagine that you need to replace the electric meter on a feeder, the disconnection of which is problematic for several reasons. For example, due to the continuity of the process.

Is it possible to make sure that a replacement is made without disconnecting consumers and at the same time in strict accordance with the Safety Rules? ...

First, a little about yourself. I am an electrician by profession. He worked for seven years in the housing office. We have such an ominous organization. Now the specifics of my work are a little different, but, nevertheless, questions on the topic "a real electrician's knife" still concern me. So about the specifics. That is, about what makes the situation unique.

Knives are different. Electricians are also different. I write about those electricians (strictly speaking - electricians) who work with a voltage of 220/380 volts with networks of 200 amperes or less. Those. Typical household and zheksky fitters. I won’t lie about other electricians - there’s another story. So here. It’s unlikely that anyone will be very interested in hearing about the installers themselves and the housing office, but reading the super-knife of an electrician can be fun ...

Before installing the meter, it is necessary to draw up a wiring diagram. The meter prepared for installation is subjected to external inspection. The counter is cleared of dirt and dust; the suitability of the meter is checked by its type and technical characteristics; the presence of state verification seals on the screws securing the casing is checked.

The seals indicate the year and quarter of the state verification, as well as the stigma of the state witness. Installed three-phase meters must have state verification seals no more than 12 months old, the integrity of the casing and glass, the presence of all screws in the junction box, the presence of fixing screws with holes for sealing in the lid of the junction box, the presence of a circuit on its inside should be checked. Here I want to emphasize the following point - purely by accident on the meter there may be a cover from a different type of device, therefore I strongly advise you not to navigate only with this circuit!

The counter, like any measuring device, should be protected from shock and shock. They can cause damage to the supports, curvature of the axis and, as a result, an increase in error and even mashing of the moving part. Before installing the meter, you must ...

In this article we will consider the basic schemes for switching on single-phase and three-phase electric meters. I want to note right away that the switching circuits of induction and electronic electric meters are absolutely identical.

The mounting holes for fixing both types of electric meters should also be exactly the same, however, some manufacturers do not always adhere to this requirement, therefore, sometimes there may be problems installing an electronic electric meter instead of induction in terms of mounting on the panel.

The clamps of the current windings of electric meters are indicated by the letters G (generator) and N (load). In this case, the generator clamp corresponds to the beginning of the winding, and the load clip corresponds to its end.

When connecting the meter, it is necessary to ensure that the current through the current windings passes from their beginnings to the ends. To do this, the wires from the power supply side must be connected to the generator terminals (terminals G) of the windings, and the wires extending from the counter to the load side must be connected to the load terminals (terminals H) ...

An electronic counter is a converter of an analog signal to a pulse repetition rate, the calculation of which gives the amount of energy consumed.

The main advantage of electronic meters compared to induction ones is the absence of rotating elements. In addition, they provide a wider range of input voltages, make it easy to organize multi-tariff metering systems, and have a retrospective mode - i.e. allow you to see the amount of energy consumed for a certain period - usually monthly; they measure power consumption, easily fit into the configuration of ASKUE systems and have many more additional service functions.

A variety of these functions lies in the software of the microcontroller, which is an indispensable attribute of a modern electronic electricity meter.

Structurally, the electric meter consists of a housing with a terminal block, a current measuring transformer and a printed circuit board on which all electronic components are installed.

The main components of a modern electronic meter are ...