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- Jul- 2019 -21 JulyMV AC Switchgear
Medium voltage switchgear buses typical failures
Electrical buses are an integral part of the medium-voltage switchgear and are used as a…
Read More » - 20 JulyHV AC Switchgear
Basic components of switchgear
A simple diagram show the basic component functions within switchgear as following items: supply-side and…
Read More » - 19 JulyHigh Voltage Disconnector Switch
Forces on AIS disconnector switches under asymmetrical Current in three phase Systems
Disconnector contacts must remain closed during the conduction of the maximum short-circuit current. This is…
Read More » - 18 JulyVacuum Switchgear
Some of circuit breaker failure
Fails to open: The breaker does not open the circuit when commanded manually or by…
Read More » - 17 JulyHigh Voltage Circuit Breaker
Different types of breakers and switches to be used in grids
CBs have a switching capability for switching on and off any kind of current up…
Read More » - 16 JulySwitchgear Testing
Optimisation SF6 handling procedures during on-site testing and commissioning for GIS
Gas compartments prefilled with SF6 at a pressure slightly above the atmospheric pressure for transportation.…
Read More » - 15 JulyMV AC Switchgear
Arcing faults in switchgears
Arcing faults are commonly caused by the following: Foreign tools dropped into equipment that may…
Read More » - 14 JulyLV Switchgear
Typical mechanical interlocks role for draw out circuit breakers in LV switchgears according to IEEE standard
➤To prevent moving the circuit breaker to or from the connected position when the circuit…
Read More » - 13 JulySwitchgear Automation
IEC61850 model for GIS with Non Conventional Instrument Transformers (NCIT)
The IEC 61850 8-1 standard applies to station bus. The IEC 61850 9-2 LE standard…
Read More » - 12 JulySwitchgear Testing
Test equipments for AIS high voltage disconnector switch insulators cracks and life
Acoustic emission: can be successfully used to detect dangerous cracks in support insulators on site,…
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