The electric meter is single-phase: basic requirements for the device

The electric meter (single-phase) is an electronic device that monitors all possible network parameters. Most often this device is installed to monitor the consumption of electrical energy. It must be installed in industrial and administrative facilities, in various factories, as well as in all kinds of structures.

The single-phase counter must meet a number of requirements, including functionality, reliability, quality and service life. Each device undergoes a testing process before release, where it is found to comply with current international standards, after which an intertesting interval is indicated. Modern devices have a simple, user-friendly interface, which allows even users without special education to use them effectively.

As already mentioned, an electric single-phase meter must meet different requirements. Let's consider some of them in more detail:

1. The body of the meter must be closed, and on the fixing screws there must be undamaged seals of the organizations: supply and government. The term of the last state verification for a single-phase device should not be more than two years.

2. The single-phase meter should not be located near fire-hazardous, as well as explosive substances. It is recommended that they be placed in a free and easily accessible space of dry rooms. It is allowed to install them in unheated rooms, provided that this corresponds to the passport characteristics of the meter. Also, this should be agreed with the relevant organizations, which in turn can put forward a number of conditions, for example, insulate the cabinet in which this equipment is located, use various heating elements. The simplest of the conditions is the installation of a filament lamp in a general hood with the electronic device presented.

3. An electric single-phase meter must be installed on structural components that have a sufficiently rigid construction, for example, cabinets, panels, panels, walls and niches in them. It is possible to install a meter on plastic, metal and wooden structures.

4. The height of the installation should be within 0,4 - 1,7 m from the floor level. This requirement is strictly individual for each room, so the range of heights is quite wide.

5. If the single-phase meter can be subject to mechanical influences, it is necessary to place it in a special cabinet with a window opposite the dial. The same measures should be carried out if the device is in a zone accessible to unauthorized persons.

6. The design and dimensions of the equipment on which the meter is to be installed should provide for the possibility of replacing and dismounting the measuring instrument from the front side, as well as a sufficiently accessible approach to clamps and terminals.

7. The wiring of the wiring does not allow the presence of twists and rations, in addition, it is necessary to leave the end of the wire (10-15 cm) free.