How to choose the electricity meter when buying

Currently, the market electro - products simply flooded with metering devices of various modifications and firms. And each of them has its own strengths and weaknesses. Therefore, going for a purchase you already are required to submit, to what parts should pay attention in the first place. These nuances and will be discussed in this material

Acquire meter correctly

1. So, coming to the electro - shop you already have to understand what exactly the model and the type of device you need accounting.

2. Explore the mandatory manual, because it contains all the main technical parameters of the product and you can ensure, for example, that this counter can be used in unheated areas where the winter the temperature can drop far below zero.

3. Carefully read the factory seals and make sure that the date of verification should not older than two years, because according to paragraph 1.5.13 of the SAE to install allowed single-phase metering devices with the date of the state checking is not older than two years, and in the case of three-phase metering devices - no more than one of the year.

At the same time, make sure that the seal (are either lead or plastic) no signs of damage.

Wherein the image must have a clear outline, and a copy is compulsorily present on a form with the back side.

In this case, the imprint of the Set:

- the year of the verification, the extreme figures of the year, eg "17"

- state verification attributes

- and Roman numerals indicate the quarter, the verification or OTC products (on the back half of the seal).

If the selected counter in the seal is missing one of the above elements, the better from the acquisition of such a device registration refuse. Because otherwise you will need to pass the state test already at their own expense in specialized certification centers.

4. Also pay attention to such parameter as MPI (calibration interval). This time, after which you will have to dismantle the metering device and make it tested in specialized centers. Now the majority of meters are represented with 16 and 32-year cycle of MPI.

Important. This period of time is not accountable to the date of installation of metering devices in your home, and the moment of passing the state test, which is listed on the factory seal.

5. Accuracy class. Also, make sure that a selected class counter corresponding to the desired accuracy. This parameter is specified on the right front side of the counter in the form of the numbers recorded in the circle.

This parameter must not be higher than the private sector "2".

6. Wiring method. Still, make sure that the chosen metering device suitable fixation in your switchboard.

There are two ways of fixing of metering devices:

Screw fasteners.

Fastening on a dedicated DIN - rail.

That's it, you should pay attention to when buying a metering device. I hope the article was helpful to you. Thanks for attention.