Huge source of knowledge about switchgear
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- Jul- 2019 -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,…
Read More » - 11 JulyGas Insulated Switchgear
General Rules for GIS Grounding and bonding
In most GIS there are two grounding grids: The station grounding grid, which is similar…
Read More » - 10 JulyVacuum Switchgear
Vacuum interrupter role in transformer on load tap changer(OLTC)
The use of a vacuum interrupter as a tap changer inside oil-filled transformers has been…
Read More » - 9 JulyMV AC Switchgear
Operation sequence for main bus grounding in MV GIS switchgear according to IEEE
Sequence for grounding of main bus section A: It is assumed that the tie CB…
Read More » - 8 JulyHigh Voltage Disconnector Switch
Bus transfer current switching define and classification for high voltage disconnector switch according to IEC
Photo from Switching phenomena for EHV and UHV Equipment CIGRE BROCHURE 570(page 124) The rated…
Read More » - 7 JulyHV AC Switchgear
High voltage(>52kv) switchgear bushing type test items according to IEC standard
dry or wet power-frequency voltage withstand test. long duration power-frequency voltage withstand test (ACLD).(apply for…
Read More » - 6 JulyGas Insulated Switchgear
High speed earthing switch (HSGS) rated operating sequence according to IEC standard (for>550kv)
HSES have two kind rated operating sequence: ➊C–ti1– O ➋C–ti1–O–ti2–C–ti1–O where ➤ti1 is a time…
Read More » - 5 JulyGas Switchgear
Sequence of operations for typical applications on medium voltage GIS switchgear feeders according to IEEE standards
standards: It is assumed that a feeder is in the energized condition and the operating…
Read More » - 4 JulyHigh Voltage Circuit Breaker
Online monitoring of high voltage circuit breaker parameters with optical fibre techniques
Sensing principles include changes in the state of the polarisation of the light due to…
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