SHARDA's surge protection capacitors are special types of capacitors. Its application is of a specialized nature i.e. in case of abnormal condition. These capacitors are designed for protection of large rotating General rating requires for rotating machines such as motors & generators. At the time of over voltage during electric storms produces surges to electrical equipment's connected to system. The voltage stress between turns of multi turn coil sets a limitation and surge voltage causes breakdown between turn to turn insulation resulting in short circuited turns. To protect from this situation surge capacitors are used.
These capacitor compliance with ISS std. 11548:1986.
| Rated Voltage | 4 kV AC to 60 kV AC |
| Rated Capacitance | 0.1 mFD to 0.5 mFD |
| No. of phase | 1 Ph or 3 Ph |
We are using Electrical grade Both side Hazy film that is BOPP Bi-axially Oriented Polypropylene film as a dielectric of Capacitor. Which interleaved with soft annealed high purity Aluminium foil as its Electrode(Conducting part). The units are impregnated under high vacuum with electrical grade Non-PCB insulating fluid. The capacitors are suitable for Indoor / Outdoor installation and for vertical/horizontal mounting. The units are provided with all standard fittings such as terminal connection hardware, earthing provision, and unit rating plate. Capacitors compliance to ISS 11548 or IEC 60871
SHARDA surge protection capacitors are of special type capacitors. Its application is of specialized nature i.e. in case of abnormal condition. These capacitors are designed for protection of electrical items.
At the time of over voltage during electric storms produces surges to electrical equipment's connected to system. The voltage stress between turns of multi turn coil sets a limitation and surge voltage causes breakdown of turn to turn insulation resulting in short circuited turns.
The surge capacitors restrict the applied surge to a point remote from the point of connection to the equipment to the system.
| Machine Voltage rating (kV / r.m.s.) |
Surge Capacitor Voltage rating (kV / r.m.s.) |
Capacitance (µF) |
Arrestor grounded (kV / r.m.s.) |
Arrestor effectively grounded (kV / r.m.s.) |
| 0.65 | 0.65 | 1.0 | 0.65/0.75 | 0.65/0.75 |
| 2.4 | 2.4 | 0.5 | 3.0 | 3.0 |
| 4.16 | 4.16 | 0.5 | 3.0 | 4.5 |
| 4.8 | 4.8 | 0.5 | 4.5 | 6.0 |
| 6.9 | 6.9 | 0.5 | 6.0 | 7.5 |
| 11.5 | 11.2 | 0.25 | 9.0 | 12.0 |
| 13.8 | 13.8 | 0.25 | 12.0 | 15.0 |
| Sr. No. | Description | Technical Details | ||
| 1 | Reference | ISS 11548 & IEC 60871 - 1 | ||
| 2 | Temperature | As per IEC/ISS or as per customer requirement | ||
| 3 | Frequency | 50Hz | ||
| 4 | Connection | 1 Ph., 3 Ph. (star or Delta) | ||
| 5 | Protection | Internal , External Fusing | ||
| 6 | Maximum Voltage | 110 % Of Rated Voltage | ||
| 7 | Rated Output | Highest System Voltage kV |
Surge Capacitor Voltage kV | Capacitance Per Phase μFD (Microfarads) |
| 3.6 | 6 | 0.5 and 0.5 | ||
| 7.2 | 12 | 0.25 and 0.5 | ||
| 12 | 18 | 0.25 and 0.5 | ||
| 24 | 28 | 0.25 | ||
| 36 | 40 | 0.125 &0.25 | ||
