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

Technical Specification

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

1. Operating Conditions

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

2. Construction and Materials

• Insulating Body: Constructed from premium electrical-grade wet-process porcelain to ensure high dielectric strength and mechanical durability.
• Finish: Standard gray glaze, unless otherwise specified.
• Mounting Hole Diameter: 3.94 in (100.1 mm) minimum.
• Anti-Rotation Design:
  • The bushing is keyed to a two-piece clamp.
  • The connector is keyed to the porcelain insulator, preventing rotation during assembly and operation.

3. Gasket Options

• Standard Gasket: Nitrile (Buna-N).
• Optional Gasket: 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 enhanced corrosion resistance and electrical performance.
• Optional Materials: Lower conductivity copper alloys, such as brass or bronze, available upon request at discounted pricing.

5. Design Features

Compatible with standard transformer installations requiring a 3.94″ mounting interface.

Designed for externally clamped mounting configurations.

Provides mechanical stability, rotational alignment, and electrical reliability.