§ 3 Terms and definitions
In the following, special terms will be used. For people far away from the power industry, their decoding is given below, and in the future I will not return to it.
Voltage transformer (VT) measuring - metrologically certified transformer for connection of low-voltage (up to 0.4 kV ) measuring instruments of electricity and power to the measuring point with high voltage.
Current transformer (TT) is a metrologically certified transformer for connection of low-current (up to 5 A) means of measuring electricity and power to the measuring point with a high current value.
The electric meter ( electricity meter, meter ) is a device for measuring the amount of electricity at a single point of measurement (distinguish between DC and AC meters, the latter being divided into single and three phase ones and also intended for measuring active and / or reactive energy in one and / or both directions of its transfer).
Induction counter - a counter with an electromechanical principle of measuring and displaying the values of the measurement data.
Hybrid counter - a counter with an electromechanical or electronic measurement principle and the opposite principle of displaying measurement data.
Electronic counter - a counter for measuring the quantity and / or quality of electricity and power with an electronic circuit for measuring and displaying measurement data.
The meter measuring element is a part of the counter, which includes a series current circuit and a parallel voltage circuit for measuring the power and energy consumed at one point of the electrical circuit.
A two-element meter is a three-phase meter with two measuring elements connected to two phases of the network for measuring the power and energy consumption in 3-wire networks with symmetrical load.
The three-element meter is a three-phase meter with three measuring elements connected to three phases of the network to measure the power and energy consumption in 3-wire networks with unbalanced load and in 4-wire networks with neutral.
Sales of energy (capacity) - the activities of energy companies to sell to consumers (consumers) of electricity (power) received from the wholesale or retail electricity market.
Subscriber direct ( subscriber ) is a consumer whose network and receivers are directly connected to the networks of the power supply organization, which has a border with the balance of the networks and a contract for the supply of energy.