Product Introduction：

Dry-type grounding transformers are divided into three-phase (DKSC) and single-phase (DKDC). They use a Z-shaped (or zigzag) connection, which differs from ordinary transformers in that each phase coil is divided into two groups and wound in opposite directions around the same phase column. The advantage of this type of connection is that the zero-sequence magnetic flux can flow along the magnetic column, while in ordinary transformers, the zero-sequence magnetic flux flows along the leakage magnetic path. As a result, the zero-sequence impedance of Z-type grounding transformers is very small (around 10Q). According to regulations, when using ordinary transformers with arc suppression coils, their capacity must not exceed 20% of the transformer's capacity. Z-type transformers, on the other hand, can carry arc suppression coils with a capacity of 90%-100%, and can also carry secondary loads, which can replace station transformers and save investment costs.

Product Features：

This product is commonly used to provide an artificial load-bearing neutral point for systems that are not grounded, for the purpose of grounding the system. The neutral point in this product is connected to an arc suppression coil or a resistor, and then grounded. It can carry a continuous rated capacity secondary winding and is used as a power source for substations.

Application Field：

Substations, user distribution stations and other 35KV and below power systems.