There are counters of different types. First of all, they differ in phases. It is also important to consider the number of terminals. The counter type 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 counters and connection schemes.
Scheme of connecting the electricity 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 at 30 A, thenExpanders are suitable only for operating 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.
Scheme of connecting a two-phase electric metertype 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.
Schemes of connection of three-phase electricity metersalways 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 conductivitycurrent must be at least 5.5 microns. The sensitivity of the modulator depends on the accuracy of the stabilization of the counter. If we consider a device at 20 A, then the specified parameter does not exceed 2%.
Scheme of connecting the electricity meter (two-tariff)has a pass-through type resistor. Transceivers in the 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 better 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.
Scheme of connecting a three-tariff metertype means 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 the filter will not be required.
Scheme of connecting an electric meter to two terminalsit does not do without an 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 parameter of threshold current conductivity. 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 for connecting the counter to three terminals is quiteis 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 parameterload. However, if we consider counters of 20 A, then the filters are considered very useful. First of all they allow to solve the problem with sharp jumps in the voltage in the network and increase the accuracy of the equipment stabilization.
Scheme connecting the meter to four terminalsincludes 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 it is connected, a lining with insulators is installed. Some experts recommend using special expanders.
Sometimes they are replaced by triggers.Contactors are necessary to avoid sudden power surges. 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 has a positive effect on 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 connection of the electric meter "Mercury"involves 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, it is possible to avoid problems with overloading the capacitors.
If we consider the standard flap on the trigger,then the filters are more expedient to establish 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.
Connecting the meter and automatic machines ACE 2000is 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 connection of the electricity meter in the apartment includesnot 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 beexceed 60 Ohm. 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.
Connecting an electricity meter through transformerscurrent involves the use of a conventional modulator with low conductivity. 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 is 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.
Wiring diagram of this type of meterimplies the use of an open modulator. A total of two connectors are provided in the circuit. The conductivity parameter is about 12 microns. A total of 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 leveldepends 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.
