Which type of winding is suitable for HV winding of a small transformer?

Explanation

For High Voltage (HV) winding in small transformers, the cross-over winding is most suitable because:

• Designed for High Voltage: It effectively handles high voltages due to its structure, which reduces voltage stress.
• Economical for Small Transformers: Cross-over winding requires minimal insulation material, making it cost-effective for small transformers.
• Reduced Eddy Current Losses: The winding distributes the current more evenly, reducing eddy current losses.
• Compact and Efficient: It allows for a compact coil design while maintaining good electrical performance.
   

Additional Information

• Sandwich winding: Used in low-voltage, high-current applications like distribution transformers.
• Continuous disc winding: Suitable for high-voltage, high-power transformers, but not typically used in small transformers.
• Helical winding: Used for medium-voltage, high-current applications, mainly in large transformers.