40.5kV Bushing
Your Leading 40.5kV Bushing Supplier
Trust In Grid Co., Ltd. is a professional transformer manufacturer, specializing in the design and production of power transformer, high-voltage switchgear, power distribution equipment, energy storage systems (ESS), magnetic wire, bushing and machining parts. Our power transformers are available in 500KV, 330KV, 220KV, and 110KV models, and are widely used in power utilities, renewable energy systems (solar and wind), industrial facilities, data centers, transportation infrastructure, and OEM applications.
Why Choose Us?
Production Capacity
With 6 factories covering 240,000 m², over 2,000 employees, and 200+ engineers, we support large-scale projects and long-term global supply with more than 30 years of export experience.
Advanced Equipment
We operate a complete set of in-house production equipment, including cutting, winding, CNC machining, vacuum drying, and testing systems, with over 450 machines ensuring stable quality and efficient output.
Quality Control
All products are manufactured and tested in compliance with IEC, IEEE, ANSI, CSA, UL/cUL, CE, and ISO 9001:2015 standards, ensuring reliable performance and smooth international approval.
OEM & ODM Capability
Our engineering team provides OEM/ODM support, including customized design and technical optimization, delivering tailored solutions for utility, industrial, and renewable energy projects.
Technical Specifications of 40.5kV Bushing
|
Parameter |
FBRG-40.5/630 |
FBRG-40.5/1250 |
FBRGL-40.5/630 |
FBRGL-40.5/1250 |
|
Rated Voltage (Ue/Ur) |
40.5 kV |
40.5 kV |
40.5 kV |
40.5 kV |
|
Rated Current (Ir) |
630 A |
1250 A |
630 A |
1250 A |
|
Creepage Distance |
(not specified) |
1256 mm |
(not specified) |
1256 mm |
|
Altitude |
(not specified) |
1000 m |
(not specified) |
1000 m |
|
Dielectric Dissipation Factor (tanδ) |
≤0.5% |
≤0.5% |
≤0.5% |
≤0.5% |
|
External Insulation Material |
Silicone rubber |
Silicone rubber |
Silicone rubber |
Silicone rubber |
|
Partial Discharge (1.5Um/√3) |
≤10 pC |
≤10 pC |
≤10 pC |
≤10 pC |
|
Color |
Grey |
Grey |
Grey |
Grey |
|
Power Frequency Withstand Voltage |
95 kV |
95 kV |
95 kV |
95 kV |
|
Standard Compliance |
IEC60137 |
IEC60137 |
IEC60137 |
IEC60137 |
|
Lightning Impulse Withstand Voltage |
200 kV |
200 kV |
200 kV |
200 kV |
|
Terminal Material |
Copper tin plating |
Copper tin plating |
Copper tin plating |
Copper tin plating |
|
Overall Length (approx.) |
1060±20 mm |
1430±20 mm |
1450±20 mm |
1450±20 mm |
|
Other Dimensions (Cable threading, etc.) |
See diagram |
See diagram |
See diagram |
See diagram |
Advantages of 40.5kV Bushing
Safety First
Proper insulation eliminates dangerous electrical faults and short circuits.
Efficient Operation
Make sure transformers run without power loss or heating.
Long equipment life
It extends equipment life and reduces wear and tear.
Cost Savings
Prevents failures that can lead to repair or replacement costs.
Insulating Electricity
All electrical power flow through conductors carries a significant risk: inadvertent discharge to ground. Also known as "ground faults," these hazardous events may cause arcing, fires, or explosions. Bushings provide the insulating protection necessary to guard conductors so that power flow occurs safely.
Guiding Electrical Flow
In addition to providing insulation, bushings also guide electrical current between the transformer' s internal windings and the external power lines. They do this by allowing a conductor to pass safely through the transformer' s grounded casing without making direct contact. Inside, the bushing contains alternating layers of conductive and insulating materials. These layers use a method called capacitive grading, which helps distribute electrical stress more evenly along the length of the bushing. This prevents the buildup of hotspots that could lead to transformer failure.
Think of a bushing as a carefully designed bridge: It ensures that electricity moves easily from one side of the transformer to the other without touching the grounded surface of the casing, which would disrupt the flow and create safety risks.
Controlling Stress
Handling high-voltage electricity places immense stress on the bushing's materials. Over time, this can lead to wear, overheating, or even failure. To counteract this, advanced bushing designs include stress-control layers or utilize materials with high thermal resistance and low electrical loss. These features distribute electrical stress evenly and minimize the risk of breakdowns.
Customization Options
| Insulation type: | Ceramic or composite |
| Mechanical dimensions: | Customizable |
| Flange design: | Customizable |
| Conductor material: | Customizable |
| Terminal type: | Customizable |
| Logo: | Customizable |
| MOQ: | Customizable |
Porcelain Bushings – Widely used for outdoor applications due to their durability, weather resistance, and good insulating properties.
Resin-Impregnated Paper (RIP) Bushings – Known for their compact structure, moisture resistance, and stable dielectric performance, making them suitable for high-voltage transformers and GIS systems.
Oil-Impregnated Paper (OIP) Bushings – Common in high-voltage power transformers, offering reliable insulation and heat dissipation, though requiring regular maintenance.
Epoxy Resin Bushings – Lightweight, customizable, and resistant to pollution, ideal for compact switchgear and indoor installations.
How to Choose 40.5kV Bushing
Voltage Requirements -The voltage rating has to match the job. Utilities working with transmission and distribution lines typically need bushings built for high-voltage use. On the other hand, commercial and industrial sites often use lower-voltage bushings that don' t require the same level of stress control.
Environmental Conditions - If the transformer sits outdoors, the bushing needs to handle weather extremes, moisture, and pollution. In contrast, indoor transformers may allow for a more compact design, but still need durability—especially in industrial environments with heat or dust.
Material and Design Choices - Porcelain bushings are rugged and reliable but heavy and more fragile in impact scenarios. Polymer bushings are lighter and often preferred where weight, flexibility, or resistance to chipping is a concern. Think about the trade-offs based on how the bushing will be handled and maintained.
Ease of Maintenance - Some bushings are easier to inspect, clean, or replace than others. If you' re working in a setting where downtime is costly, opting for a bushing that' s service-friendly can save money and hassle over time.
Compliance With Standards- Although transformer bushings typically make up only 5-8% of a transformer' s total cost, their failure can lead to catastrophic consequences, both financially and in terms of safety. To mitigate risks, you need to make sure your bushings meet all relevant industry standards and regulations.
Ordering Process
Send Us Inquiry → Receive Our Quotation → Negotiate Details → Confirm the Sample → Sign Contract/Deposit → Mass Production →Cargo Ready → Balance/Delivery → Further Cooperation
Payment Terms
T.T with 30% downpayment, 70%before shipment.
Paypal or West Union also accept.
Our Service Highlights
Pre-Sales Consultation & Design Support
Early technical engagement to define requirements and deliver optimized solutions.
During Sales & Project Execution
Transparent project management with controlled production, quality tracking, and on-time delivery.
Warranty Advantage
Minimum 2-year warranty on all products, ensuring reliable and risk-free operation.
After-Sales Support
24/7 technical support with fast response, spare parts availability, and training services.
Long-Term Partnership
Lifelong technical support and upgrade guidance for sustained performance.
Packaging & Shipping
Packaging details:
Shockproof foam/moisture-proof film, professional export cartons/wooden crates/pallets.
Final assembly ensures mechanical integrity and readiness for transportation and installation.
Certificates
We're well-known as one of the leading 40.5kv bushing manufacturers and suppliers in China, also support customized service. Please feel free to buy high quality 40.5kv bushing made in China here from our factory. Contact us for more details.
40 5kV Composite Housed Cable Entry Type Bushing, high voltage bushing, 40 5kV Porcelain Housed Rod Type Bushing