wall bushings serve as critical electrical components, facilitating connections between high-voltage cables and equipment such as transformers and circuit breakers. The structure generally consists of an inner cylinder, outer cylinder, insulating sleeve, support ring, and support bucket. Key advantages include superior strength, high resistance to breakdown, protection against pollution flashover, and excellent corrosion resistance.
The TG1A-40.5-(450) 40.5KV High Voltage Insulated Epoxy Resin Through wall bushing is a premium electrical component designed for high-voltage switchgear systems and power distribution cabinets. Constructed from high-strength epoxy resin, it offers exceptional electrical insulation, mechanical durability, and thermal stability, ensuring safe and reliable performance under demanding conditions.
This guide provides comprehensive insights into product applications, maintenance methods, accessory details, and technical support, allowing engineers, technicians, and system operators to fully optimize the bushing's performance and longevity.
Rated Voltage: 40.5KV, suitable for medium and high-voltage systems.
Material: Epoxy resin with superior dielectric strength and mechanical robustness.
Design: Through-wall feed-through sleeve for easy integration into high-voltage cabinets.
Current Rating: Supports continuous high-voltage operation.
Dimensions: Standard 450 mm diameter, compatible with high-voltage switchgear.
Operating Temperature Range: -40°C to +120°C.
Insulation Strength: 95 kV/1 min withstand voltage.
| Feature | Specification | Benefit |
|---|---|---|
| Electrical Insulation | High dielectric epoxy resin | Prevents leakage and electrical faults |
| Mechanical Strength | Reinforced epoxy body | Withstands vibration, impact, and thermal expansion |
| Thermal Stability | High heat resistance | Maintains performance under high-load conditions |
| Feed-through Design | Sleeve type | Simplifies installation and maintenance |
| Longevity | Durable epoxy material | Reduces replacement frequency |
| Safety | Rated for 40.5KV | Protects personnel and equipment |
| Environmental Compliance | RoHS-certified | Eco-friendly material, reduced environmental impact |
The TG1A-40.5-(450) bushing is designed for high-voltage feed-through operations in various industrial and utility settings:
Power Generation Plants: Ensures stable insulation in high-voltage transformer and switchgear setups.
Substations: Provides reliable feed-through for 40.5KV power distribution systems.
Renewable Energy Systems: Compatible with wind and solar high-voltage integration.
Industrial Manufacturing: Supports heavy-duty electrical machinery requiring high-voltage insulation.
Reduces electrical discharge risk in critical systems.
Minimizes maintenance downtime through durable construction.
Compatible with multiple switchgear types, enhancing system flexibility.
Ensures long-term operational safety in extreme environments.
Proper installation and operation require the following accessories and complementary components:
| Accessory | Function | Notes |
|---|---|---|
| Mounting Flange | Secures bushing to cabinet wall | Ensure torque specifications are met |
| Sealing Gasket | Provides airtight seal | Prevents moisture ingress |
| Conductor Connectors | Connects internal high-voltage cables | Use rated connectors only |
| Protective Cap | Covers exposed ends during transport | Remove before energizing |
| Insulation Sleeve | Adds additional dielectric protection | Optional for extreme environments |
| Grounding Terminal | Connects bushing to grounding system | Ensures personnel safety |
Installation Tip: Always verify that all accessory components meet the specified material and voltage ratings. Improper components may compromise insulation and safety.
Regular maintenance is essential to maximize the lifespan and safety of the bushing.
Monthly Visual Check: Look for cracks, discoloration, or surface contamination.
Quarterly Electrical Testing: Measure insulation resistance using a megohmmeter.
Semi-Annual Thermal Monitoring: Use infrared sensors to detect hotspots.
Clean dust and debris with a soft brush or compressed air.
Ensure all bolts and connectors are tight to prevent mechanical stress.
Inspect for partial discharges using high-voltage detection devices.
Avoid overloading beyond the rated voltage and current.
| Task | Frequency | Method |
|---|---|---|
| Visual Inspection | Monthly | Check epoxy surface for cracks or dirt |
| Insulation Resistance Test | Quarterly | Use megohmmeter |
| Thermal Imaging | Semi-Annual | Detect overheating or abnormal hot spots |
| Mechanical Tightening | Quarterly | Torque all bolts and connectors |
| Cleaning | As needed | Soft brush, compressed air, or mild solvent |
| Replacement | As necessary | Follow manufacturer guidelines |
Pre-Installation Check: Confirm the bushing is free of cracks or defects.
Positioning: Align feed-through sleeve with cabinet wall opening.
Mounting: Install mounting flange and torque bolts to recommended settings.
Electrical Connection: Secure conductor connectors to ensure low-resistance contact.
Testing: Perform dielectric and insulation tests before energizing.
| Issue | Possible Cause | Solution |
|---|---|---|
| Overheating | Excessive current or poor ventilation | Reduce load, improve cooling |
| Partial Discharge | Dust, moisture, or contamination | Clean surface or replace bushing |
| Mechanical Damage | Impact or mishandling | Replace damaged bushing |
| Loose Connections | Improper torque | Retighten bolts and connectors |
| Surface Discoloration | UV exposure or thermal stress | Inspect and replace if necessary |
Warranty: Typically 12–24 months, covering material and manufacturing defects.
Technical Support: Provided by manufacturer for installation, maintenance, and troubleshooting.
Spare Parts Availability: Accessories and replacement bushings are readily available.
Documentation: Detailed manuals and maintenance guidelines included with every product.
RoHS Compliance: Eco-friendly epoxy material.
High-Voltage Safety: Rated 40.5KV with reinforced insulation.
Durable Design: Reduces frequent replacements, minimizing waste.
Protective Measures: Proper installation prevents electric shock and equipment damage.
The TG1A-40.5-(450) 40.5KV High Voltage Insulated Epoxy Resin Through Wall Bushing Feed-through Sleeve Wall Bushing is a high-performance, durable, and reliable solution for high-voltage switchgear and power cabinet applications.
By following recommended installation, maintenance, and operational procedures, users can achieve long-term safety, efficiency, and cost-effectiveness. Its robust epoxy construction, superior insulation, and comprehensive accessory support make it ideal for industrial, utility, and renewable energy applications.
Phone: +8613736779975
E-mail: sales@vcbbreaker.com
Address: 66 Punan Road, Yueqing Economic Development Zone, Zhejiang, China
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