MV current transformers

Medium-voltage current transformers for indoor applications transfer primary currents on the mains side proportionally and in line with phase to standardised secondary currents. They are insulated in cast resin and can serve as busbar supports in addition to their primary function. These current transformers can be used for both metering and protection purposes.

Medium-voltage current transformers are also available as multi-core transformers. The maximum possible number of cores depends on the selected output and accuracy class, which determine the core volume. The number of secondary windings depends on the investor's requirement. For example, current transformers can be manufactured with four secondary windings - 2 measurement windings (energy meter, network quality analyser) and 2 protection windings. Current transformers are optionally available with primary or secondary switching.

Current transformers with primary-side switching offer a choice between two primary rated currents, depending on the connection of the primary connections via parallel or series circuits. The rated currents on the primary side can only be achieved in a ratio of 1:2, such as 50-100A or 100-200A. 
All measuring class transformers supplied by DACPOL are calibrated by the PCA laboratory and hold a calibration certificate in accordance with GUM.