Sub Harmonic Protection Relay

We are offering sub harmonic protection relay. S-pro 4000 is a digital, microprocessor-based sub-harmonic protection system that provides comprehensive sub-harmonic protection for transmission lines at any voltage level, particularly those with serial compensation and interconnected with wind farms. Use the s-pro sub-harmonic protection relay for monitoring and protection of uncontrolled sub-harmonics, ensuring a reliable operation of the power grid.