Magnewin Energy Pvt. Ltd. Offers Surge Protection Capacitor for High Voltage Equipments. Magnewin Energy Pvt. Ltd. Is an ISO 9001:2000 awarded company. The Surge Protection Capacitor for High Voltage Equipments is capable of bringing down the steepness or slope of over voltage transients, that may appear across transformer and other A.C. Line connected equipments. By reducing the slope of incoming surge conventional arresters fitted in conjunction with surge capacitors, the level gets truncated before operating across the insulation of a device. The surge capacitors are designed to withstand and absorb damped or oscillatory line disturbances without affecting the mains frequency performance at the point of common coupling.