The common electricity meters currently have four accuracy classes: 0.2S, 0.5S, 1.0, and 2.0. So, how to choose the right accuracy class of electricity meter according to the installation environment?
Generally speaking, when the electricity meter is installed, the accuracy class is selected according to the transformer's capacity. For example, according to the State Grid's requirements, for users with transformer capacity greater than 100KVA, the meter accuracy should be at least class 1.0. As the transformer capacity and electric power transmission increase, the accuracy class requirements of the electricity meter increase accordingly.
In addition to industry regulations, application scenarios should also be considered in the selection of meter accuracy. The following are recommendations for the accuracy class of electricity meter suitable for the installation environment:
Installation Environment | Electricity Meter Accuracy Suggestion |
Gateway | Class 0.2S/0.5S/1.0 three phase smart meter |
Users of special transformer above 100KVA | |
Users of special transformer under 100KVA | Class 0.5/0.5S/1.0 three phase smart meter |
Three-phase users under distribution transformer | Class 1.0 three phase cost control smart meter |
Single-phase users under distribution transformer | Class 2.0 single phase cost control smart meter |
Precedente :
The development history of electricity metersProssimo :
Smart Electricity Meter Accuracy Class