Transformer cores are generally made of silicon steel sheets. Silicon steel is a type of steel containing silicon (also known as silica). The reason for using silicon steel to make transformer cores is that it is a highly permeable magnetic material, which can generate a strong magnetic induction intensity within an energized coil. This allows the volume of the transformer to be reduced. Read More

Temporary troubleshooting methods for transformer cores when shutdown is not possible: If there is an externally routed grounding wire and the fault current is relatively high, the grounding wire can be temporarily disconnected for operation. However, enhanced monitoring is required to prevent a floating potential from appearing on the core if the fault point happens to disappear. Read More

The magnitude of the main magnetic flux in a transformer core is determined by the excitation current. Since the no-load current of a transformer actually varies with its operating voltage, a higher voltage results in a larger no-load current, which in turn increases the excitation current. Conversely, a lower voltage leads to a smaller no-load current. Read More