The 11kV 100A porcelain cutout fuse (with interrupter) is an overcurrent protection device for medium voltage distribution lines (6-11kV), integrating porcelain insulator and high-efficiency interrupter to achieve fast breaking (≤10ms), visible breakpoint isolation and long-life maintenance. Key benefits include:
High arc control: The arc extinguisher is designed with a breaking capacity of up to 16kA, which is suitable for frequent operation scenarios (such as industrial power distribution, photovoltaic/wind power collector lines).
Anti-fouling and flashover performance: the creepage distance of the porcelain umbrella skirt ≥ 450mm (suitable for grade IV dirt areas).
Mechanical reliability: porcelain bending strength ≥ 10kN, contact pressure ≥ 250N, mechanical life ≥ 2000 times.
Typical Applications:
Primary side protection of distribution transformers
Overhead line segment fault isolation
Incoming protection of ring main unit in industrial plant
Lightning protection cooperation in high thunderstorm areas
| 依据IEC 60282-1、GB/T 15166.2） | |
| parameter | Technical Indicators |
| Rated voltage | 11kV (maximum applicable voltage 12.7kV) |
| Current rating | 100A (continuous current-carrying, temperature rise≤60K) |
| Breaking capacity | 16kA (symmetrical RMS, 0.2s) |
| Arc extinguishing time | ≤ 10ms (at 12kA fault current) |
| Power Frequency Withstand Voltage (Dry/Wet) | Dry state: 38kV/1min, wet state: 28kV/1min |
| Withstand lightning impulse voltage | 95kV (peak, 10 times each of positive and negative polarity) |
| Creepage distance | ≥450mm (anti-fouling umbrella skirt design) |
| Interrupter material | Arc-resistant ceramic + copper-tungsten alloy grid (resistant to 3000°C high temperature) |
| Mechanical life | ≥ 2000 splitting and closing operations |
| weight | 4.2-5.0kg (including interrupter) |
Application scenarios
Industrial power distribution: high-voltage bus protection for motor groups
New energy station: overcurrent protection on the high-voltage side of the box transformer
Urban power grid: fault isolation of cable branch box
Mine power supply: short circuit protection for mobile substation
