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- Apr- 2019 -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 a voltage divider with the digital…
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…
Read More » - 23 AprilSwitchgear Automation
Condition monitoring automation System according to IEC 61850 for medium voltage GIS Cubicle
The configuration diagram of the ICMD for GIS Cubicle is shown in Figure . The…
Read More » - 22 AprilSwitchgear Testing
Contact movements and current versus time curves in generator circuit breaker
At the heart of the GCB lies the interrupting chamber which has the job of…
Read More » - 21 AprilHV DC Switchgear
Synthetic current test for HVDC circuit breakers
A 12-pulse rectifier is used as the current source to supply the DC test current…
Read More » - 20 AprilHigh Voltage Circuit Breaker
Trip free operating mechanism definition acc to IEEE C37.04
Medium voltage circuit breakers tripfree definition in the standard are: If a closing operation is…
Read More » - 19 AprilHV DC Switchgear
Fault clearing currents curve in HVDC hybrid circuit breaker Simulink
In hybrid breaker with electronic interruption by IGBTs simulink (left pic), the commutation of fault…
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