Features of High Voltage Capacitors
- Internal fuse types or standard type (fuseless) available upon request.
- Low dissipation factor, low-temperature rise, long service life.
- Stable capacitance with little variation due to temperature.
- Impregnated with high insulation strength and non-PCB biodegradable fluid in the vacuum tank.
- Internal fuse capacitor mainly has more safety, higher reliability, less installation space, lower installation, and maintenance costs.
Construction of HV Capacitor
Dielectric | Polypropylene film |
---|---|
Insulation fluid | Non-PCB fluid |
Bushing / Color | Wet process porcelain Color: Baby blue, Munsell 5B 8/4 |
Case material / Color | Stainless steel |
Paint / Color | Epoxy / Urethane system with corrosion, acid and alkali, and weather resistant Color: Sand, Munsell 7.5Y 7/2 |
Earth connection | One side bracket has ground terminal ( One request for unpainted area under the brackets for earthing) |
Summarized Comparisons Between Internal Fuse Type and External Fuse Type Capacitors
Items | Internal Fuse Capacitors | External Fuse Capacitors |
---|---|---|
Installation space | Smaller | Large |
Continuous usability after fuse cuts off | Excellent | Low |
Reactive power loss after fuse cuts off | Low | High |
Fuse safety | Excellent | Poor |
Possibility of spurious fuse operation | Low | High |
Case breakdown possibility | Low | High |
Unbalance protection difficulty | Low | High |
Need for spare capacitors | Low | High |
Servicing and maintenmance | Low | High |