How To Choose the Right Meter and Specifications?
Electricity meters are divided into three-phase electric meters and single-phase electric meters, so you need to choose according to the specific situation. Generally, household electric meters are single-phase electric meters, and three-phase electric meters are used in factories, shopping malls, three-phase electrical appliances or places with large electricity consumption. The editor of the remote meter reading system will introduce it to you below.
The voltage of single-phase meters is 220V. The current is available in 20A, 40A, 60A, 80A, 100A and other optional specifications. The current specification is up to 100A. When a 100A meter is selected, its load can reach 22000W. When selecting the current specification of a single-phase meter, it should be selected according to the specific electricity consumption.
The voltage of the three-phase meter has optional specifications such as 57.7V, 100V, 220/380V, 57.7V and 100V are high-voltage meters, and 220/380V are low-voltage meters. The current has optional specifications such as 0.3(1.2)A, 1.5(6)A, 40A, 60A, 80A, 100A, etc. 0.3(1.2)A and 1.5(6)A are mutual inductance (CT) meters, and the rest are direct meters.
When the load exceeds 100A, the mutual inductance (CT) meter of 0.3(1.2)A and 1.5(6)A should be used with the corresponding transformer.
When the peak load current does not exceed 100A, you can choose a suitable through meter.
When the peak load current reaches 180A, a 200:5 transformer is used with a 1.5(6)A mutual inductance (CT) meter, and the electricity measured by the meter is multiplied by 200:5 to obtain the actual electricity consumption.
Don't think that the larger the current selected by the meter, the better, you need to choose appropriately according to the actual situation. The actual power consumption passes through the distribution transformer, and the transformer has capacity, so as to avoid potential safety hazards or unnecessary losses caused by the overload of the distribution transformer. Its power lines must also meet the corresponding standards, otherwise overloading may burn and cause safety hazards.
