There are various types of counters. First of all, they differ in phase. It is also important to consider the number of terminals. The type of counter determines the connection scheme of the device. It is also necessary to consider the place of connection of the device. In order to understand this issue in more detail, it is necessary to consider in detail the specific types of meters and connection schemes.
The scheme of a single-phase meter in the apartment
The connection diagram of the electric meter (single-phase) involves the use of a single modulator. In this case, the resistors are required of a bushing type. If we consider the model at 20 A, then the expander can be used 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 to 30 A, then expanders are suitable only for the operational type. Their current conductivity parameter must be at least 4.8 microns. In this case, much depends on the sensitivity of the modulator. In the standard panel, it is set to 3 mV.
Connection of a two-phase meter
The connection diagram of a two-phase type electric meter contains two-channel conductors. If we consider the usual 25 A model, then one expander is needed to connect the device. Most often it is used with a lining. The conductivity parameter in the circuit is at least 5.7 microns. It is also important to note that the threshold resistance index depends on the sensitivity of the modulator. The connection diagram of the 30 A meter is different. First of all, it should be noted that the expander is used without a liner. In this case, the threshold current conductivity is at a level of 10 microns.
Features of a three-phase meter
Connection schemes for three-phase electric meters always involve the use of a wire extender. If we consider a standard shield with a modulator, then the device is connected through the contacts of the tetrode. In total, three resistors must be provided 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 stabilization of the counter. If we consider devices at 20 A, then their specified parameter does not exceed 2%.
Schemes of two-rate modifications
The connection diagram of the electric meter (two-tariff) has a bushing type resistor. Transceivers in a circuit are typically used with two plates. If you believe the experts, it is better not to use tetrodes. To stabilize the output voltage, it is more advisable to use network-type filters. However, if we talk about 25 A counters, then in this case we need two rectifiers. Circuit transceivers are used with adapters. Some experts recommend selecting transistors with only insulators.
Features of three tariff meters
The connection diagram of the three - tariff type electric meter involves the use of an expansion relay. The resistors in the circuit are used on 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.
Dual terminal device layout
The connection diagram of the electric meter with two terminals is not complete without an expander. Very often it is used with two linings. Transistors are installed on insulators. Some experts believe that filters are not practical. First of all, they significantly reduce the threshold current conductivity parameter. Also, the accuracy of stabilization drops with filters. In normal condition, it is 3%. If we consider the standard model at 25 A, then the thyristor can be connected to a wired type. In some cases, it is replaced by a conventional regulator.
Three-terminal device layout
The connection diagram of the three-terminal counter is quite simple. In total, it has three expanders. If we consider a standard shield with a modulator, then the regulator is used with one lining. The transceiver is connected to the shield only after the transistor. Some experts believe that filters are inappropriate. First of all, they strongly affect the current conductivity.
The threshold load parameter is also significantly reduced. However, if we consider counters at 20 A, then the filters are considered very useful. First of all, they allow you to solve the problem of sudden surges in voltage and increase the accuracy of stabilization of equipment.
Four terminal models
The connection diagram of the four-terminal counter includes not only a modulator, but also pass-through resistors. The tetrode 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 connecting it, a lining with insulators is installed. Some experts recommend the use of special expanders.
Sometimes they are replaced by triggers. In order to avoid sudden surges in voltage, contactors are needed. The indicated elements are connected directly through the terminals. If we consider 30 A devices, then the modulator is used only in the field type. First of all, this positively affects the threshold current conductivity. It is also important to note that the element greatly helps in improving the accuracy of stabilization. Insulators are standardly installed with linings. The regulator may be used without a resistor. In this case, the current conductivity index will not exceed 6 microns.
Scheme of the counter "Mercury"
The connection diagram of the Mercury electric meter involves the use of two modulators. The expander for the model is used in a resistive type. Some experts recommend installing it only after the modulator. In this way, problems with capacitor overload can be avoided.
If we consider the standard shield on the trigger, then it is more advisable to install filters of the passage type. Many experts believe that the tetrode is able to increase current conductivity. However, it is important to consider that the accuracy of stabilization of the device is significantly reduced.
ACE 2000 counter
The electric meter and ACE 2000 machines are connected thanks to a modulator for three adapters. The amplifier is used with a winding. In total, the circuit must have two regulators. The tetrode in this case is a capacitor type. If we consider a two-digit shield with an output trigger, then the modulator is more appropriate to select an open type. Transistors are installed behind the lining.
Model circuit NIK 2102
The connection of the electric meter in the apartment includes not only a modulator, but also a pulse transistor. In total, two transceivers are provided in the circuit. The modulator itself is used open type. However, before connecting it, all terminals are connected.
In this case, the threshold resistance should not exceed 60 Ohms. In some cases, the current conductivity reaches 5 microns. If we consider a capacitor-type shield, then in this case the modulator is selected with a lining. In total, two expanders are required for connection. The transceiver is standardly used open type.
Model Diagram ME172
Connecting an electric meter through current transformers involves the use of a conventional modulator with low conductivity. The trigger for the circuit is selected vector type. In total, three connectors are required for connection. The parameter of current conductivity they must be 20 microns. If we consider the capacitor plate, then the modulator is used with plates. This element is connected via output contactors. The expander for the device is used with a lining.
Connection of the MTX1A10 model
The connection scheme of this type of counter implies the use of an open modulator. In total, there are two connectors in the circuit. The current conductivity parameter is about 12 microns. In total, two tetrodes are required for connection. However, if we consider the capacitor plate, then the modulator is used with a lining. First of all, it will help to reduce the output voltage level.
In this case, the threshold resistance level depends on the transceiver. Many experts recommend installing it without facing. The regulator is used with contactors. The device is connected via output terminals.