Huge source of knowledge about switchgears
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- May- 2019 -3 MayHigh Voltage Disconnector Switch
High voltage disconnector switch interlocking in AIS substations
Disconnector switches interlock takes 3 basic forms in substations: Mechanical cam-action type (figure left): used…
Read More » - 2 MayVacuum Switchgear
Circuit breaker control function from bay level in substation automation
Control function can be performed from different control levels: From bay level: Through the bay…
Read More » - 1 MaySwitchgear Automation
High voltage circuit breakers signals in substation automation
Circuit breakers are conformed of one or several sealed interrupting chambers in which a dielectric…
Read More » - Apr- 2019 -30 AprilHV AC Switchgear
FCLs and role in grids
Fault current limiters (FCLs) are special power system devices used to mitigate and lower high…
Read More » - 29 AprilGas Insulated Switchgear
Typical sensors used for UHF PD measurement for GIS
In most types of GIS, the UHF energy is concentrated between 100 MHz and 2…
Read More » - 28 AprilVacuum Switchgear
Wipe spring role in medium voltage vacuum circuit breaker
On a MVVCB, wipe is the additional over travel of the mechanism past closing the…
Read More » - 27 AprilHigh Voltage Circuit Breaker
Air break circuit breakers technical history in high voltage
Since compressed air has a higher dielectric strength and better thermal properties than air at…
Read More » - 26 AprilSwitchgear Automation
Digitalicition example based by IEC 61850 in medium voltage switchgear
Current measurements by Rogowski coil and voltage measurements by voltage divider with digital bus where…
Read More » - 25 AprilSwitchgear Testing
SF6 decomposition products from electrical arc in gas switchgear
During normal load or short-circuit current switching, SF6 molecules are ionized and fragmented by the…
Read More » - 24 AprilGas Insulated Switchgear
High speed grounding switches (HSGS) in GIS
These switches primary purpose is the same as grounding switches in air insulated substations and…
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