Description
Porcelain Insulator: A ceramic insulator made from high-purity alumina (Al₂O₃ ≥ 95%) and sintered at high temperature, used for conductor fixation and electrical isolation in power systems.
Key Indicators:
Mechanical Strength: ≥ 12 kN (suspension insulator)
Power Frequency Withstand Voltage: ≥ 70 kV (110 kV level)
Lightning Impulse Withstand Voltage: ≥ 170 kV (IEC 60383 standard)
| Performance Dimension | Technical Advantage Description | Data Source and Verification Method |
|---|---|---|
| Anti-pollution Flashover Performance | Creepage distance ratio ≥ 25mm/kV (exceeding the national standard of 20mm/kV) | Pollution test report from China Electric Power Research Institute |
| Weather Resistance | No cracking after 1000 cycles from -40°C to +80°C | Test records from SGS environmental test chamber |
| Mechanical Strength | Breaking load ≥ 160kN (the industry average is 140kN) | Measured data from German ZWICK universal testing machine |
Product advantages
- Primary Bushing Transformers has excellent insulation performance. Porcelain insulators have a high insulation resistance, which can effectively prevent current leakage and ensure the safety of power transmission and transformer operation.
- Primary Bushing Transformers can reliably insulate the wires from the towers, avoiding short - circuits and leakage accidents.
For example, in high - voltage transmission lines, porcelain insulators can withstand thousands of volts or even higher voltages (customized according to customer requirements), ensuring the stable operation of the power system. It has strong mechanical strength.
- Porcelain bushing insulators can withstand large mechanical loads, including the tension and pressure generated by the weight of the wires, wind forces, and ice - coating. It has a long service life.
our certificate

Application
Primary Bushing Transformers mainly used in transformers and high-voltage overhead power lines to insulate and support wires.


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Packing
Primary Bushing Transformers packaged in wooden crates, wooden framed cases or other strong enough materials covered with moisture-proof materialoutside.Gross weight of each package not exceeds 3000kgs.




Production process








About us
We offer a full range of transformer bushings, including porcelain insulators, glass insulators, and composite insulators (epoxy resin insulators).
2. We are a manufacturer with a well-established supply chain system, providing all accessories for transformers.
3. We support customizations in terms of drawings, packaging, and logos, aiming to serve our customers wholeheartedly.
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FAQ
1/Q: What information do I need to provide if I want a quote?
A: Product demand and product detailed requirements.
2/Q: Do you have a product quotation sheet?
A:Yes.
3/Q: How long does the delivery time usually take?
A: 20-30 days.
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