HOPS Transmission System

In 2014 we had started to negotiate with HOPS to integrate regular testing purposes by installing Cicuit Breakers from vaious suppliers. By end of 2014 we performed on site at s/s Zerjavinec with our local partner a demonstration of KoCoS Test and Measurment system – ACTAS, in combination with PROMET and EPOS, to perform a total circuit breaker test.

The 420kV circuit breaker, with following technical specification – Three pole HV CB, single pole operated, two interrupter units (SF6) with capacitor, hydraulic drive, rated control voltage 220 V DC. CB is assembled in coupler field (main-aux bus 400 kV) – had been tested successfully, according customer requirements and needs.

This frequent testing will help HOPS in evaluating their technical need on each circuit breaker → fast, easy and cost effective.