FCGW-20/24kV Composite Dry Wall Bushing（400A-4000A)

1. Product Overview

Introduction

Core Advantages

1. Composite Silicone Rubber Insulation
   Weather-proof, anti-pollution flashover, strong hydrophobicity, stable insulation performance under severe outdoor conditions (fog, dust, acid rain).
2. Dry Oil-Free Structure
   No flammable insulating oil, zero risk of oil leakage & explosion, safer for indoor compact switchgear rooms.
3. Two Standard Dimension Series

• 400A–1600A models: Compact overall height 760mm, indoor creepage 426mm, outdoor creepage 865mm
• 2000A–4000A heavy current models: Height 840mm, indoor creepage 940mm, outdoor creepage 777mm

4. High Withstand Voltage Capacity
   65kV power frequency withstand voltage, meets IEC medium voltage insulation standard.
5. Wide Current Range Coverage
   Complete specifications from 400A up to 4000A, matching all mainstream 24kV busbar current demands.
6. Easy Installation & Compact Layout
   Standard square mounting flange, pre-drilled fixed holes, fits standard wall opening sizes for fast on-site assembly.

2. Complete Technical Specifications

Model & Parameter Comparison Table

Key Technical Standards

• Rated system voltage: 24kV
• Insulation type: Composite silicone rubber dry insulation
• Power frequency withstand voltage: 65kV
• Operating environment: Indoor & outdoor dual-use, anti-pollution grade Class III
• Mounting structure: Square metal flange fixed installation
• Conductor form: Integrated copper busbar through core
• Operating temperature range: -40°C ~ +65°C

3. Structure & Dimension Drawing Explanation

1. Full-length overall dimension drawing: Mark total height, indoor/outdoor section length, busbar through-hole size
2. Square mounting flange outline drawing: Standard fixed hole position & wall opening dimension
3. End section cross-section drawing: Copper conductor size matching different rated currents

1. Small & medium current (400A–1600A): Shortened indoor creepage design, for standard thin wall switch rooms, compact space layout.
2. Heavy large current (2000A–4000A): Extended indoor creepage distance, thicker conductive copper core, lower temperature rise, suitable for high-load main power feeders.

4. Application Scenarios

• Medium voltage indoor & outdoor power distribution substations
• 24kV high voltage switch cabinets, ring main units (RMU)
• Transformer room wall penetration insulation
• Industrial mining high-power power supply systems
• New energy wind/solar station booster cabinet power transmission
• Urban grid reconstruction, compact prefabricated substation projects

5. Installation Instructions

1. Reserve matching square wall opening according to the flange drawing size before wall construction.
2. Place the bushing through the wall opening, align the flange fixing holes with wall embedded bolts.
3. Tighten fixing nuts evenly to fix the bushing vertically to the wall.
4. Connect indoor and outdoor copper busbars to the two ends of the bushing conductive core, use anti-oxidation conductive grease at the joint to reduce temperature rise.
5. Check silicone rubber insulation surface for damage before power transmission, keep creepage surface clean without dust accumulation.

6. Product Packaging & Delivery

• Packaging: Export standard plywood case with foam inner protection, shockproof for sea & land long-distance transport.
• Custom service: Support non-standard current, special creepage distance, customized flange size according to client engineering drawings.
• Lead time: Standard models 7–10 working days, customized products 15–20 working days.
• Shipping: Support FOB, CIF, DDP international trade terms, door-to-door delivery to global ports.

7. FAQ

Q1: What is the difference between 760mm height and 840mm height models?

Q2: Can this bushing be used in coastal salt fog areas?

Q3: Is the product oil type or dry type?

Q4: Can you provide CAD dimension drawings for design reference?