In high speed railway industry, more powerful electric motors are used that are operated energy-efficiently by using control systems. The inverter for regulating frequency and voltage is one of those control elements. Converting the single-phase alternating current from a power source to the three-phase alternating current required by the motor produces a large amount of heat that must be dissipated. The cooling medium used water-glycol mixtures for applications with high power consumption, Shinhoo specially developed ethylene glycol pump to meet the requirements of high-speed train.
Another important application is locomotive transformer cooling cycle insulated oil sealless pumps.