Common Fault Types of Transformer Cores 2026-05-28
After installation, due to negligence, the transport locking pins (or positioning nails) on the tank cover were not flipped back or removed, causing the core to touch the tank shell. Other causes include: core clamping limbs touching the core limbs/columns; warped silicon steel sheets touching the clamping limbs; cardboard spacers between the lower core clamp feet and the iron yoke falling off, causing the clamp feet to touch the silicon steel sheets; or the thermometer socket being too long and touching the clamps, yoke, or core column.
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