What do the circles in the Electrical Current Transformer mean?

1. On the electrical primary system diagram, small circles are often used to represent windings, and a circle represents a winding. If there are two circles in a row, it means that the Electrical Current Transformer has two windings. If there are three circles in a row, then Description has three windings;

2. The higher the voltage level, the more the number of turns; the low-voltage 380V Electrical Current Transformer is generally one winding; the medium-voltage 10KV is generally two windings if there are no special requirements, if there are special requirements, additional windings can be added; high-voltage 110KV Generally four windings;

3. Electrical Current Transformer with two windings, one winding is 0.5 grade precision, used for measurement or measurement, one winding is P grade precision, used for protection; transformer with three windings, generally one winding is 0.2 grade Or 0.2S level precision for measurement, one winding is 0.5 level precision for measurement, one winding is P level precision for protection; it may also be 0.2 level or 0.2S level precision for one winding, For metering, the two windings are P-class precision, both used for protection. The number of windings and the selection of precision are related to their practical occasions.

The circle of the Electrical Current Transformer represents the winding. In many electrical appliances, the winding problem is often mentioned. The winding is related to the power consumption and accuracy of the equipment.