To select an electricity meter, it is necessary to determine the following:
- Number of phases:
- You can determine the number of phases by referring to the previous equipment's nameplate or schematic diagram. It will indicate whether it is a single-phase or three-phase electricity meter. You can also check the specifications of the power supply in your apartment or house.
- Rated current and maximum current:
- To find out the maximum current of your apartment's electrical grid, you can simply refer to the rated current of the previous meter or input device. For loads up to 10 kW, you will need a meter with a maximum current of 50-60A. If it exceeds 10 kW, the meter should be rated for 100A. Three-phase meters are also available with transformers. Their operating currents range from 1.5 to 10A and are connected through transformers.
- Mounting type:
- Typically, meters have two types of mounting options: for three screws and for TN35 rails (DIN rails). When replacing an induction meter, choose a model that fits the same installation dimensions as the existing three-screw mounting type.
- Billing:
- Modern meters come in single-rate (recording at one price) and multi-rate (considering electricity consumed at different prices during the day and night, with the night rate being almost half the price). *Verify the electricity rates in your city with the energy sales company.
The installation of metering devices should be carried out by employees of a company that holds the necessary licenses. Self-installation of equipment is not permitted. The connection, sealing, and accuracy of initial readings are performed by experts from the energy sales company, who will then calculate the power consumption based on the readings from the new meter.
You can select an electricity meter by clicking on the following link: Home - Sunlitmeter
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