Key Functions of ANSI Porcelain Low Voltage Bushing
1. Electrical Insulation
The porcelain body provides excellent dielectric insulation between the energized conductor and the grounded transformer tank. It prevents current leakage, flashover, and short circuits, ensuring safe operation under normal and overload conditions.
2. Current Conduction
The internal copper or brass conductor carries electrical current from the transformer's internal winding to the external low-voltage distribution system with minimal electrical resistance.
3. Oil Sealing
Equipped with high-quality gaskets or O-rings, the bushing creates a reliable seal between the transformer tank and the external environment, preventing transformer oil leakage while keeping moisture and contaminants out.https://www.besthvelectric.com/transformer-components/ansi-bushing/ansi-low-voltage-porcelain-bushing.html
4. Mechanical Support
The bushing securely supports the conductor as it passes through the transformer wall. It withstands cable tension, installation torque, vibration, and mechanical stress during transportation and operation.
5. Environmental Protection
ANSI porcelain bushings are manufactured from high-strength glazed porcelain, providing excellent resistance to:
UV radiation
Rain and humidity
Dust and pollution
Temperature variations
Corrosion
This makes them suitable for long-term outdoor service.
6. Reliable External Connection
The external threaded terminal allows easy connection to busbars, cables, or distribution equipment while maintaining a stable electrical contact with low contact resistance.
