STANDARD LOW VOLTAGE BUSHING ASSEMBLIES 1.2 KV CLASS, 30 KV BIL EXTERNALLY CLAMPED TYPЕ

Technical Specification

Product: Low Voltage Bushing Assembly
Application: Liquid-Filled Transformer

1. Operating Conditions

• Electrical ratings are based on operation in a liquid-filled transformer, with the lower end of the bushing submerged below the oil level.
• Designed for consistent performance under standard transformer service conditions.

2. Construction and Materials

• Insulating Body: Manufactured from high-quality electrical-grade wet-process porcelain for excellent dielectric strength and mechanical durability.
• Finish: Standard gray glaze, unless otherwise specified.
• Mounting Hole Diameter: 3.94 in (100 mm) minimum.
• Anti-Rotation Design:
  • The bushing is keyed to a two-piece clamp.
  • The connector is keyed to the porcelain insulator to prevent rotation during installation or operation.

3. Gasket Options

• Standard Gasket Material: Nitrile (Buna-N).
• Optional Gasket Material: Cork and rubber composite.
  • To specify this option, add suffix “C” to the part number when ordering.

4. Terminal (Spade) Assembly

• Standard Material: 95% minimum conductivity copper.
• Finish: Tin plated for improved corrosion resistance and electrical contact.
• Optional Materials: Lower-conductivity copper alloys (e.g., brass, bronze) available upon request at discounted pricing.

5. Design Features

Engineered to ensure long-term performance under oil-immersed conditions.

Suitable for externally clamped transformer installations.

Provides mechanical stability, precise alignment, and electrical reliability.