ZAZ-En

The production of **protective devices for industrial and professional power engineering** is the basic profile of ZAZ‑En. Our goal is to introduce innovative technical solutions, including digital technology, into the area of protecting systems and devices used in the energy industry. The protective relays developed by us implement a full range of protective functions from simple current and voltage relays to advanced ground fault protection solutions (including admittance), differential protection of generators, motors, transformers and generator-transformer unit protection systems of the highest power. They can function as field controllers, for example, in complex protection systems of medium or high voltage switchgear. iZAZ series protections are also used as distance protection of HV lines and differential protection of medium and high voltage lines implemented as two half-sets with a dedicated fiber optic link. We invite you to view a short presentation of our company. The ZAZ-En team offers proprietary development of a series of automation devices under the common name iZAZ. Protective relays from this series enable comprehensive implementation of electroenergetic protection automation (EAZ) systems for industrial and professional power engineering, covering most elements of the power system at various voltage levels. This automation is adapted to the specifics of the facility and the individual requirements of end users. ZAZ-En offers comprehensive service support for automation sets, which are professional protections for industrial and professional power engineering. We service protective relays of our own production (iZAZ series) and devices made in both analog (ZAZ) and digital (CZAZ) technology. We provide services in the scope of testing protection sets and their components (modules), taking into account the preventive regeneration of power supplies.