Huge source of knowledge about switchgear
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- Sep- 2019 -5 SeptemberLV Switchgear
Arc chutes principles in air at LV circuit breaker
Photo source from Switching in Electrical Transmission and Distribution Systems book (figure 6.6 page 170)…
Read More » - 4 SeptemberHigh Voltage Circuit Breaker
Disadvantage of overvoltage limitation methods in shunt reactor switching by circuit breakers according to IEEE
Opening resistor:Adds significantly to mechanical complexity of the CB; not viable – technically or economically…
Read More » - 3 SeptemberHigh Voltage Circuit Breaker
Torsion bar spring operating mechanisms for circuit breaker
Photo from Mitsubishi Electric spring operating mechanism with a torsion bar This mechanism have been…
Read More » - 2 SeptemberSwitchgear Testing
Power factor test on circuit breakers
Assess the integrity of both the internal and external insulation. Test sets generally have an…
Read More » - 1 SeptemberSwitchgear Testing
Timing tests method in switchgears
Photo from CIGRE TECHNICAL BROCHURE NO.737 (Non-intrusive methods for condition assessment of distribution and transmission…
Read More » - Aug- 2019 -31 AugustSwitchgear Testing
Low temperature ambient effect for outdoor vacuum circuit breaker (VCB) operation
Photo from Behavior of outdoor vacuum circuit breakers under simulated environments article by V.Viadhyanathan and…
Read More » - 30 AugustSwitchgear Testing
Electron capture detector(ECD) method for sf6 gas switchgear
photo from Lamont-Doherty Earth Observatory website(just for display) An electron capture detector(ECD) is used to detect…
Read More » - 29 AugustGas Insulated Switchgear
Extension methods of mounted gas insulated switchgear (GIS)
Extension with original equipment: This is the preferred solution as long as the type of…
Read More » - 28 AugustGas Insulated Switchgear
HV vacuum circuit breaker in GIS
larger tank enclosure need in VCB: ➊ Vacuum breakers allow for other insulation media than…
Read More » - 27 AugustVacuum Switchgear
Control opening in MV vacuum breaker in normal condition
By sending a command for contact opening very accurately before the instant of current zero…
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