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- Apr- 2019 -8 AprilHigh Voltage Circuit Breaker
Typical timing sequence for controlled opening in highvoltage circuit breaker
The term controlled opening (de-energization) refers to the technique of controlling the contact separation of…
Read More » - 7 AprilSwitchgear Automation
Gas insulated switchgear (GIS) condition monitoring automation system based on IEC61850 protocol
This system have 3 part: Sensor part: this part is consist of Single Wall Carbon…
Read More » - 6 AprilGenerator Circuit Breaker
Generator circuit breakers(GCB) role in gas turbine power plants
When a gas-turbine generator is started-up, its rotor must be accelerated by external means to…
Read More » - 5 AprilHigh Voltage Circuit Breaker
Electrical wear phenomena in ageing high voltage circuit breakers in substation
This phenomena is observed on Contacts and Nozzles in circuit breakers at service voltage.Contacts of…
Read More » - 4 AprilHigh Voltage Circuit Breaker
Controlled switching phenomenon of unloaded overhead lines
The physical phenomenon governing overhead line switching overvoltages is the propagation of travelling waves along…
Read More » - 3 AprilHV DC Switchgear
HVDC valve hall earthing switches
A valve hall is a building which contains the valves of the static inverters of…
Read More » - 2 AprilHV DC Switchgear
Ultra fast disconnector switch(UFD) role in ABB hybrid HVDC circuit breaker
The hybrid DC breaker scheme combines the excellent switching capability of power electronics (IGBT) with…
Read More » - 1 AprilGas Insulated Switchgear
Typical alarms in gas insulated switchgear (GIS)
Low gas density (approximately 90%) in each gas compartment and zone signifying a gas leak.…
Read More » - Mar- 2019 -31 MarchHigh Voltage Disconnector Switch
Operating mechanisms for high voltage disconnectors and earthing switches
Disconnectors are almost entirely actuated by motor-driven operating mechanisms, but manual mechanisms are also used…
Read More » - 30 MarchHigh Voltage Circuit Breaker
Controlled switching in shunt reactor switching in high voltage circuit breakers
During de-energization of shunt reactors, over voltages may be generated by multiple re ignitions. All…
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