Resin Cast Electrical Ct Current Transformer

The resin cast electrical ct current transformer is an indoor, epoxy resin, vacuum cast, post type unit designed for 10kv voltage level power systems with a rated frequency of 50 Hz. It is primarily used for current measurement, energy metering, and protective relaying.

The resin cast electrical ct current transformer adopts a fully enclosed epoxy resin casting process, in which the core is made from high grade magnetic material, and both the primary and secondary coils together with the core are embedded in resin. This construction provides excellent performance on insulation, moisture resistance, and pollution resistance. The surface of a resin cast electrical ct current transformer requires no additional coating, and the current transformer can be installed in multiple positions.

The range covers both measuring classes ,such as 0.2S and 0.5S, and protection classes ,such as 10P10 and 10P20. A multi ratio design is available on a resin cast electrical ct current transformer, to make it well suited for use in metal clad electrical panels.

Technical Specification:

Product FAQ:

Q: What technical parameters should one check when selecting a resin cast electrical ct current transformer?

A: the following key parameters shall be check when selecting:

1.Accuracy class: For metering/measuring (e.g. 0.2s or 0.5) and protection purposes (e.g. 10P10, 5P10, etc.).

2.Rated primary current and secondary current (the transformation ratio).

3.Short time thermal current (Ith) and short time current withstanding capacity (for fault conditions).

4.Insulation levels (voltage withstand, impulse voltage rating, etc.).

5.Environmental tolerances: Temperature range, altitude, humidity, pollution level.

6.Burden: the VA load the secondary must drive without degrading accuracy.

Q: In what environments or applications are resin cast electrical ct current transformers especially suitable?

A: the following environment or application are suitable for a resin cast electrical ct current transformer:

1.Indoor switchgear, where space is limited and insulation is crucial.

2.In harsh or polluted environments (dust, moisture, chemicals) where open parts or oil could degrade.

3.In metering and protection circuits that require stable, accurate measurement over long periods.

4.Applications where low maintenance and high reliability are important.