The 35kV insulating cap is an important electrical equipment accessory made of natural silicone rubber, heat - shrinkable materials, and anti - aging polymer insulating materials. It is mainly used to insulate and seal bushing sockets and spare incoming and outgoing line ports, effectively preventing various exposed joints from phase - to - phase short - circuits or ground faults caused by factors such as wet flashover, pollution flashover, salt - fog chemical gas corrosion, human touch, and small animals or debris bridging wires. This ensures the safe operation of power equipment.
Electrical Parameters3
- System Voltage: 35 kV.
- Partial Discharge: Under a voltage of 45 kV, the partial discharge amount is ≤ 10 pC.
- Power Frequency Withstand Voltage: It can withstand a voltage of 117 kV for 5 minutes continuously without breakdown.
Mechanical Parameters3
- It is usually used on E - type bushings with dimensions of Φ39.9/Φ61.5/103.7/M16 or C - type bushings with dimensions of Φ46/Φ56/91.5/M16, with a fully sealed connection. It is easy to install and has high tolerance.
- Positioning is achieved by a positioning buckle strip, eliminating the need for winding steps, which is convenient for installation and operation.
Environmental Parameters
- Generally, it can adapt to a wide temperature range and work normally in an environment from - 40°C to + 90°C.
- It has good weather resistance, being able to resist the influence of environmental factors such as ultraviolet rays and ozone, and can operate stably for a long time in outdoor environments.
In conclusion, the 35kV insulating cap has excellent insulation performance, reliable mechanical properties, and good environmental adaptability, which plays a vital role in ensuring the safe and stable operation of power systems.
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