How to choose an electric meter? Their varieties and characteristics
In order to buy a good electric meter you need to know their classification and characteristics that are most suitable for your apartment, home or villa. If you can not boast of knowledge in the field of electricians, we recommend that you contact the energy sales company, where you will be consulted and answer all questions of interest.
Be sure to pay attention to the calibration interval between the electric meters. This is one of the most important parameters. In essence, the MPI is the time period during which the manufacturer guarantees the operation of the device( data are given in years).On average, the range is seen from four to sixteen years.
Types of modern electric meters, their characteristics and parameters
And so to make the right choice, answer a few questions:
- Induction or electronic energy meter?
With an induction meter, the designation of the accuracy class is rarely higher than 2.But they are reliable and can last more than 15 years. As for electric power meters, the situation here is completely different. Their indicators far exceed induction, but, they cost more and quickly fail. - Single-phase or three-phase meter?
To answer this question, take a look at the previous counter. If the scoreboard indicates 220-230 V - buy single-phase, if 220-380 / 230-400 - three-phase. - Maximum counter current?
If the current of the input circuit-breaker fluctuates to forty amperes, select the device up to sixty amperes;if more - up to 100 A. - Electricity meter tariff?
In Russia you can pay bills at two tariffs from 8am to 11pm, and from 11pm to 8am( lower cost).In order to get acquainted with the tariffs, call or go to the energy sales company. - Do you need additional functions?
As for the additional functions, these include:- screen, which displays the current, mains voltage and network frequency at the current moment;
- possibility to take readings in the absence of light( when there is no electricity in the house, you can see the meter reading);
- backlight;
- other functions.
- How to mount the meter?
This question depends on where your meter is located - on a conventional electrical panel( 3-screw mount) or on a DIN rail( R or R casing).
