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  • Sangli, Maharashtra, India
  • ISO: 9001-2015

We are Manufacturer, Supplier, Exporter of Surge Absorbing / Protective Capacitor and majorly we serve our customers from all over the world. This product is used to protect generator and heavy motor from intern fault.

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.

Surge Absorbing / Protective Capacitor
Surge Absorbing / Protective Capacitor
Surge Absorbing / Protective Capacitor
Surge Absorbing / Protective Capacitor
Product Range
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
Application
  • Protection of Motors and Generators against Inter-Turn fault.
  • High voltage Surge & Cable fault finding.
  • LAVT Panel.
  • Protection against surges.
Design Features

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

Application of Sharda's Surge Capacitor

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.

  • Protect large / medium rotating machine (Motor, Generator) : Used in motor control circuits to protect motors from voltage spikes that can occur during starting or stopping
  • Protect Transformer : Installed in electrical panels or distribution systems to protect sensitive equipment from voltage surges
  • Electronics & Communication system : Found in electronic devices and appliances to safeguard them from power surges.
General rating requires for rotating machines
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

Technical Data Sheet
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
surge-capacitor