Power Engineers of MOESK Work to Replace Obsolete Switching Equipment

Obsolete oil circuit breakers at eighteen electrical substations of MOESK Northern branch, the standard service lives of which were off, are replaced by modern vacuum ones. 

Nearby 100 switches of 35 and 110 kV are replaced at ten substations 35/6 kV ("Grachevo" "Gvozdyovo", "Gorbunovo", "Gorlovo", "Gromovo", "Gudovo", "Vakhromeevo", "Zaprudnya", "Klin", "Babaiki") and at eight substation of 110/10/6 kV ("Yaroslavskaya", "Chirkovo", "Novo-Sofrino", "Butakovo", "Reshetnikovo", "Klin", "Solnechnogorsk", "Senezh"). Works are carried out according to the predicated schedule and will be completed this year. 

Vacuum switches provide the easiest and most reliable way of arc extinction. They are more reliable in use compared with oil ones and have smaller size, provide a fast start after blackout, possess switching and mechanical resource providing a significant increase in the turnaround time of operation, fire-and explosion-proof. Furthermore, their use reduces operating costs greatly. 

There are many social facilities of the Moscow region (educational institutions, hospitals, clinics, etc.) in the area of responsibility of MOESK, Northern branch, where the works on the renovation of equipment are carried out. 

"Updating the switching equipment will increase, reliability and quality of electricity supply to consumers" - said Alexey Irzhak, Director of Northern Electric Grids, the branch of MOESK.