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Archive: Category «High Voltage»

High Voltage

Use Of Vacuum As A Breaking Medium

SF6 and vacuum are the two most modern breaking techniques in the fields of Medium Voltage (from 1 to 52 kV) and High Voltage (> 72.5 kV). They appeared in… Read more

Dec 22, 2010 | By Edvard

Fig-1 Evolution Of MV Circuit Breaker Markets In Europe
High Voltage

Basics Of Subtransmission Systems

Subtransmission systems are those circuits that supply distribution substations. Several different subtransmission systems can supply distribution substations. Common subtransmission voltages include 34.5, 69, 115, and 138 kV. Higher voltage subtransmission… Read more

Dec 17, 2010 | By Edvard

Transmission Lines
High Voltage

IEC 62271-200 – HV Switchgear And Controlgear

Part 200: AC metal-enclosed switchgear and controlgear for rated voltages above 1 kV and up to and including 52 kV Switchgears are important nodal points in modern power distribution. Correspondingly… Read more

Dec 09, 2010 | By Edvard

IEC 62271-200
High Voltage

Gas-Insulated Substations – GIS

A gas-insulated substation (GIS) uses a superior dielectric gas, SF6, at moderate pressure for phase-tophase and phase-to-ground insulation. The high voltage conductors, circuit breaker interrupters, switches, current transformers, and voltage… Read more

Nov 10, 2010 | By Edvard

Gas-Insulated Substations - GIS


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