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Devices for Power System Protection

Multifunctional relays for Power Engineering

The production of protections for industrial and professional power engineering is the basic profile of the ZAZ-En company. Our goal is to introduce innovative technical solutions, including digital technology, to the area of ​​protection of systems and devices used in the energy industry.

The protection relays developed by us perform a full range of protection functions, from simple current and voltage relays, to advanced earth-fault protection solutions (including admittance), differential protection of generators, motors, transformers and protection systems for generator-transformer blocks of the highest power. They can act as bay controllers, e.g. in comprehensive protection of medium or high voltage bays. The iZAZ series protection devices 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.

Product offer

The ZAZ-En team offers a proprietary series of devices, under the common name of iZAZ, that enables comprehensive implementation of automatic protection systems for the majority of electrical power system elements operating at different voltage levels, wherein such protection is adaptable to the specific facility and individual requirements of end users.

Service offer

ZAZ-En offers a comprehensive support service for both analogue (ZAZ) and digital (CZAZ) multifunctional relays in terms of testing the multifunctional relays and their elements (modules), including preventive regeneration of power supplies.

European Funds
European Funds
European Funds

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