Products Description
The Insulating Bushing for Transformer 30NF250 is a high-strength porcelain post insulator primarily designed for 30kV medium-voltage power systems, with a rated mechanical bending strength of 250kN.
Key Features
Material & Structure: Made of high-strength brown-glazed porcelain with a multi-shed design, which increases creepage distance and improves anti-pollution performance. The base flange ensures stable mounting on substation structures, transformers, or switchgear.
Mechanical Strength: Rated at 250kN mechanical bending load, it provides reliable support for conductors and equipment under wind, ice, and tension loads.
Electrical Performance: Optimized for 30kV systems, with excellent dielectric strength and stable insulation properties, suitable for outdoor and moderately polluted environments.
Compliance: Manufactured to IEC 60168 and GB/T 772 standards, ensuring compatibility and performance in global power systems.
Applications
Primarily used in 30kV distribution systems, substations, and distribution transformers.
Ideal for industrial, urban, and coastal areas where reliable insulation and mechanical support are critical.
Drawing
Application
Insulating Bushing for Transformer mainly used in transformers and high-voltage overhead power lines to insulate and support wires.
Production process
company advantage：
- We have vertical setup,so we can ensure price, quality and leadtime.
- We are manufacturing vendor and we invest 12% profit into R&D.
- We can make Time and Action Calendar 1 day after PO.
- We can give out CAP with 12 hours.
- We supply wide range of transformer components and insulation materials.
- We have a team with 20 years of experience to serve our customers.
We offer various types of insulators
FAQ
Q：Where is the bushing on a transformer?
A：The bushings on a padmount are always in the cabinet on the front of the unit with low-voltage bushings on the right and the high-voltage bushings on the left. Substation transformers can have the bushings located almost anywhere on the unit.
Q：What happens when a bushing goes out?
A：Often overlooked, bushing failure can cause a ripple effect of pressure and wear on surrounding components. This wear ultimately results in additional loading and pressure on the steering, suspension and driveline components. Over time, this constant stress contributes to accelerated part failure.
Q：Why do transformer bushings fail?
A：Bushing leaks developing over time in operation – Most commonly, bushing leaks are caused by ageing or by improper gaskets, as well as the weak adhesion between the epoxy and the conductor.
Q: Are you trading company or manufacturer?
A: We are manufacturer, having our own factories.
Q: Do you provide samples ? is it free or extra?
A: Yes, we can provide free samples, you only need to cover the shipping cost.
Q: How long is your delivery time?
A: Generally, if the goods are in stock, shipment can be arranged within 3 working days;
If the goods need to be mass produced, delivery time may be around 7-10 working days.
certificate
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