Electrometer selection and connection

The electric meter is an electrical meterThe device is designed to take into account the power consumption of both AC and DC. Electricity in this case is measured in kilowatts / hour (kW / h). Where there is a need to monitor and monitor the consumption of electrical energy for certain periods of time, it is also necessary to connect an electricity meter.

Electric meters are single-phase and three-phase. The meter is connected via a current measuring transformer (in case of an indirect connection), however, you can do without them (direct connection). The installation of an electric meter in a network with a voltage of up to 380 volts requires the use of the device for an electric current from 5 to 25 A. This is a mandatory rule. The choice of the electric meter is carried out in view of their types. At present there are two main ones: electronic and inductive counters. To answer the question about which is better - electronic or induction - is quite difficult. Everything depends on the functions assigned to them.

power meter connection

The induction electric meter is based on the principlesThe work of the magnetic forces of the inductor and voltage with the magnetic force of the aluminum disk. As a result of this interaction, the number of revolutions of the disk will reflect the energy consumption. To count the revolutions, a counting mechanism is used. Such counters are extremely simple, but they are already obsolete. They can not support multi-rate accounting and do not have the ability to transmit readings remotely. Connecting an electric meter that works on an induction circuit is a simple matter, and in most cases does not require even special knowledge.

meter installation

Electronic counters are based on microcircuits. In such devices there are no rotating parts, they simply convert the signals from the measuring elements into directly proportional quantities. Such electronic meters have high reliability and accuracy.

During a process such as connectingan electric meter, it is necessary to pay attention to some parameters of devices. On the front side, either the number of revolutions of the disk for induction counters or the number of pulses for electronic meters that correspond to 1 kW / h must be indicated.

Electrometer selection

An important parameter should be calledaccuracy class of the electric meter. This parameter indicates the degree of measurement error. Also, the device's tariff should be called the most important parameter and pay attention to it in such a procedure as the connection of an electricity meter. Until recently, almost all the meters that were used in everyday life were strictly one-tariff. Modern digital meters can keep track of both the zones of the day, and even the time of the year.

Multi-tariff options are beneficial for the consumer: the system developed for such electric energy meters allows automatic switching of the tariff from day to night (at night the tariff is much lower, which motivates users to equalize the daily load schedule).