Wiring diagram of the electricity meter. Connecting the electricity meter in the apartment

There are counters of various types. First of all, they differ in phases. It is also important to consider the number of terminals. The type of the counter determines the connection scheme of the device. It is also necessary to take into account the location of the device connection In order to understand this issue in more detail, it is necessary to consider in detail the specific types of counters and connection schemes.

Single-phase meter in the apartment

The connection scheme of the electric meter (single-phase) implies the use of one modulator. Resistors in this case are necessary through type. If we consider a model of 20 A, then the expander can be of the switching type. In some cases, filters are connected. Thus, overloads from the network do not affect the performance of the device.

If we consider modifications of 30 A, then the expanders are suitable only for the operational type. The conductivity parameter of the current must be not less than 4.8 microns. In this case, much depends on the sensitivity of the modulator. In the standard shield it is set to 3 mV.

Connecting a two-phase meter

The connection scheme of the two-phase electricity meter contains two-channel conductors. If we consider a conventional model at 25 A, then a single expander is needed to connect the device. Most often it is applied with an overlay. The conductivity parameter in the circuit is not less than 5.7 microns. It is also important to note that the threshold resistance value depends on the sensitivity of the modulator. The connection scheme for the 30 A counter is different. First of all, it should be noted that the expander is applied without facing. In this case, the threshold conductivity of the current is at a level of 10 microns.

Features of the three-phase counter

The connection schemes of three-phase electricity meters always assume the use of a wired expander. If we consider a standard shield with a modulator, then the device is connected through the contacts of the tetrode. There are three resistors in the expander.

In this case, the threshold current conductivity should be at least 5.5 microns. The sensitivity of the modulator depends on the accuracy of the stabilization of the counter. If we consider devices at 20 A, then the specified parameter does not exceed 2%.

Schemes of two-tariff modifications

The connection scheme of the electric meter (two-tariff) has a pass-through resistor. Transceivers in a circuit are usually used with two plates. If you believe the experts, it is better not to use tetrodes. To stabilize the output voltage, it is more appropriate to use network type filters. However, if we talk about the counters at 25 A, then in this case we need two rectifiers. Transceivers in the circuit are used with adapters. Some experts recommend selecting transistors with insulators only.

Features of three-rate counters

The connection scheme of a three-tariff type electric meter implies the use of an expansion relay. Resistors in the circuit are applied to two conductors. The device is connected via contactors. In some cases, a regulator is used. If we consider a standard shield with a modulator, then a filter is not required.

Diagram of devices on two terminals

Scheme connecting the meter to the two terminals does not do without the expander. Very often it is applied with two plates. Transistors are installed on insulators. Some experts believe that filters are useless to use. First of all, they significantly reduce the threshold current conductivity parameter. The accuracy of stabilization also falls with the filters. In the normal state, it is 3%. If we consider the standard model at 25 A, then a thyristor can be connected to a wired type. In some cases, it is replaced by a conventional regulator.

The scheme of devices on three terminals

The scheme for connecting the counter to three terminals is quite simple. In all there are three expanders. If we consider a standard shield with a modulator, then the regulator is used with one plate. The transceiver is connected to the shield only after the transistor. Some experts believe that it is inappropriate to use filters. First of all, they strongly influence the conductivity of the current.

Also, the threshold load parameter is significantly reduced. However, if we consider counters of 20 A, then the filters are considered very useful. First of all they allow to solve a problem with sharp jumps of a voltage in a network and increase accuracy of equipment stabilization.

Models for four terminals

The circuit of connection of the counter to four terminals includes not only a modulator, but also pass-through resistors. Tetrod is most often used open type. However, in this case, much depends on the conductivity of the device. If we consider devices at 25 A, then the tetrode should be selected with a semiconductor. However, before its connection, a lining with insulators is installed. Some experts recommend using special expanders.

Sometimes they are replaced by triggers. In order to avoid sudden power surges, contactors are necessary. These elements are connected directly through the terminals. If we consider devices at 30 A, then the modulator is only used in the field type. First of all, this positively affects the threshold conductivity of the current. It is also important to note that the element significantly helps in improving the accuracy of stabilization. Insulators are installed as standard with cover plates. The regulator can be used without a resistor. In this case, the current conductivity index will not exceed 6 microns.

The scheme of the counter "Mercury"

The connection scheme of the electric meter "Mercury" assumes the use of two modulators. The extender for the model is of the resistive type. Some experts recommend that it be installed only after the modulator. Thus, problems with overloading of capacitors can be avoided.

If we consider the standard flap on the trigger, then it is more expedient to set the filters through a through type. Many experts believe that the tetrode can increase the conductivity of the current. However, it is important to take into account that the accuracy of stabilization of the device is significantly reduced.

ACE 2000 counter

The connection of the electricity meter and the ACE 2000 machines is due to a modulator for three adapters. The amplifier is used with winding. There must be two regulators in the circuit. The tetrode in this case is of the condenser type. If we consider a two-digit flap with an output flip-flop, then the modulator is more expedient to select an open type. Transistors are installed behind the plate.

The scheme of model NIK 2102

Connecting an electricity meter in an apartment includes not only a modulator, but also a transistor. There are two transceivers in the circuit. Directly, the modulator is of the open type. However, before connecting it, all the terminals are connected.

In this case, the threshold resistance should not exceed 60 ohms. In some cases, the current conductivity index reaches 5 microns. If we consider a shield of a capacitor type, then in this case the modulator is selected with an overlay. In total, two expanders are required for the connection. The transceiver is normally used as an open type.

The scheme of the model ME172

Connecting an electricity meter via current transformers involves the use of a conventional low-conductivity modulator. The trigger for the circuit is selected by a vector type. A total of three connectors are required for the connection. The conductivity parameter of the current must be 20 μm. If we consider the capacitor shield, then the modulator is used with the plates. This element is connected via output contactors. Expander for the device is applied with an overlay.

Connection model MTX1A10

The connection scheme for a counter of this type implies the use of an open modulator. There are two connectors in the chain. The conductivity parameter is about 12 microns. In total, two tetrodes are required for the connection. However, if we consider the capacitor shield, the modulator is used with a lining. First of all, this will help to reduce the output voltage level.

In this case, the threshold resistance level depends on the transceiver. Many experts recommend it to install without facing. The regulator is used with contactors. The device is connected via the output terminals.