The Low voltage ANSI Standard 18kV Bushing Assembly is engineered for transformer applications requiring reliable insulation performance, robust mechanical strength, and long-term dielectric stability under oil-immersed or outdoor service conditions.
Series Overview
- Rated voltage: Dry: 75KV, Wet: 60KV
- Design standard: ANSI
- Construction: wet process electrical porcelain
- Glaze color: light gray
Technical Specifications
| Parameter | Value |
|---|---|
| Material | wet process electrical porcelain |
| Glaze color | light gray |
| Creepage distance | 450mm Dry arcing distance: 200mm |
| Impulse withstand voltage | 95KV |
| Low frequency flashover voltage | Dry: 75KV, Wet: 60KV |
| Mechanical torsion strength | 20.3N.m |
| Standard | ANSI |
Construction & Materials
The bushing body is manufactured from high-grade wet-process porcelain (C120-grade aluminum silicate ceramic) with a smooth, vitrified glaze finish that resists moisture ingress, surface tracking, and chemical attack. Internal copper or brass conductors are silver-brazed or crimped to ensure low contact resistance; elastomeric NBR or silicone gaskets provide oil-tight interfaces with the transformer tank. Hardware is zinc-plated or stainless steel to withstand long-term thermal cycling.
Applications
Pad-mount and pole-mount distribution transformers, rectifier duty transformers, furnace transformers, and mining-duty oil-immersed equipment.
Quality & Standards Compliance
Manufactured in accordance with ANSI. Routine testing includes visual inspection, dimensional verification, dye-penetrant or ultrasonic porcelain body checks, partial discharge measurement, power-frequency voltage withstand, and lightning impulse voltage test. Type-tested designs are available with certified test reports upon request.
Order Information
Customized mounting dimensions, creepage distances, shed profiles, current ratings, and special hardware kits are available on request. Please contact our engineering team with your transformer tank drawings, oil volume, and ambient service conditions for application-matched selection.
