Proton Instruments Pvt. Ltd. Manufactures Wire and Cable Preheating System. Proton Instruments Pvt. Ltd. Is an ISO 9001 registered organization. Proton Instruments Pvt. Ltd. Offers instrumentation and control equipment for use in industrial production. The Wire and Cable Preheating System or high frequency induction preheaters heat wire or other conductive materials prior to the extrusion process. The pH interface controls a high frequency power unit which applies at the optimum frequency and precise voltage, providing the exact pre-heat temperature at the desired line speed. An even tension is applied to the wire reducing SRL problems in data cable applications. The Wire and Cable Preheating System delivers outstanding reliability and control. The Wire and Cable Preheating System are available in 4 models like PH160, PH300, PH450, and PP320.