Structural characteristics of German standard transformer bushing

Structural characteristics of German standard transformer bushing

-Insulation structure: Oil paper capacitive insulation structure is commonly used, which consists of multi-layer cylindrical capacitor cores composed of oil impregnated cable paper and aluminum foil pressure equalization electrodes as the main insulation. By using the principle of capacitive voltage division, the voltage is evenly distributed across the entire insulation of the capacitor core.

-External structure: including terminal block, lead connector, rain cover, oil gauge, oil plug, oil pillow, upper porcelain sleeve, end screen, lifting ring, oil valve, nameplate, vent plug, connecting sleeve, lower porcelain sleeve, pressure equalizing ball, etc.

-Internal structure: The bushing is a fully sealed structure, and the transformer oil inside is an independent system that is not affected by the atmosphere. The oil pillow at the head of the bushing is used to regulate the volume change of oil caused by temperature changes.