4A ENGINEERING, as a result of its 20 years experience and expertise, designs, manufactures and executes protection and energy automation systems especially in high voltage and medium voltage systems. In this fi eld, the company is not only the follower of the innovative technologies that goes to the extend of digital transfomer substation automation systems, but the pioneer in implementation and design.

– High voltage line, transformer, capacitor, busbar and breaker failure systems

– Event and fault recorders

– IEC61850 based digital substation control and protection systems

– Generator protection and synchronization systems

– Distribution systems feeder protection and selective protection systems

– Distributed architecture fast metering, protection and control systems

– Motor protection systems