Huge source of knowledge about switchgear
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- Jul- 2019 -27 JulyHV DC Switchgear
HVDC main challenges with protection and switching
Photo from DC Grid Fault Management and DC Circuit Breakers chapter 26 of High‐Voltage Direct‐Current…
Read More » - 26 JulyGas Insulated Switchgear
Very Fast Transient Over voltage(VFTO) wave common characteristics in HV& EHV GIS
Steep wave front, for which the rise time is usually 2–20 ns: when re striking…
Read More » - 25 JulyHigh Voltage Circuit Breaker
Motor drive mechanism for HV CB
Motor Drive major advantages: Elimination of wearing components Reduction in operating forces Substantial reduction of…
Read More » - 24 JulyHigh Voltage Circuit Breaker
Small inductive current switching condition for switchgear
When a CB opens and closes a shunt reactor banks or unloaded power transformer, it…
Read More » - 23 JulyHV AC Switchgear
Switchgear mechanism electromotor failures
Electric motors are used in the mechanical drives of switchgears mainly for 2 purposes: charge…
Read More » - 22 JulyVacuum Switchgear
Vacuum contactors and their specifications
The vacuum contactor is a special type of LBS that has been developed to primarily…
Read More » - 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…
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