HIZAL Ltd. established in 1974 , has been producing , High Voltage Test Equipment , Electric Discharge Machines and CNC Machines / Systems ever since. At the same time the firm is engaged in special R/D projects and consulting services especially in the high voltage field.. The firm who is presently active in its new premises with 1500 m2 closed area has established a High Voltage Test Laboratory having testing facilities of 500 kV , 10 kJ. Lightning Impulse Generator , 300 kv AC power frequency and 100 kV Partial Discharge Measuring Systems. All of these equipment have been manufactured by HIZAL and are calibrated and certified by UME - Tübitak ( National Institute of Metrology ) . Presently HIZAL are conducting EN Standard tests for Power Transformers , Cable Equipment , HV cubicles and Switchgear , Lightning Arresters , Lightning Catching Devices and Insulators in this Laboratory. HIZAL is also manufacturing similar test equipment for privite firms and Institutions in Turkey and abroad.