Huge source of knowledge about switchgear
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- Aug- 2019 -16 AugustHigh Voltage Circuit Breaker
Transient Electromagnetic Emissions(TEE) measurement methods in switchgears
During a CB switching operation, TEE are generated by the electric discharges in each interrupter.…
Read More » - 15 AugustSectionalizer
Sectionalizers specifications in grid
Control Unit: Electrical control giving the necessary timing function for the operation of the sectionalizer.…
Read More » - 14 AugustLoad Break
Air break medium voltage load break switches
Photo from power switching component book by Kaveh Niayesh , Magne Runde Compared to medium…
Read More » - 13 AugustVacuum Switchgear
Phases of the arc current in a vacuum circuit breaker
The vacuum arc can be divided into 3 regions: cathode spot region interelectrode region space…
Read More » - 12 AugustMV DC Switchgear
Artificial current zero crossing creating method for DC switchgear
This method is injecting or superimposes a current of opposite direction to the current to…
Read More » - 11 AugustHigh Voltage Circuit Breaker
High voltage switchgear insulators creepage distance extending ways in substations
Measure or estimate site condition severity, select candidate profile and creepage guidance, choose applicable laboratory…
Read More » - 10 AugustGenerator Circuit Breaker
Out of phase in generator circuit breaker (GCB)
An out-of phase condition occurs when a making operation of the GCB is performed at…
Read More » - 9 AugustGas Insulated Switchgear
Metal material used in GIS
Steel: There are two basic tasks of the enclosure: to keep the gas pressure inside…
Read More » - 8 AugustHigh Voltage Circuit Breaker
Arc voltage in high voltage gas circuit breakers
In gas circuit breakers, the arc voltage is usually in the range of a few…
Read More » - 7 AugustHigh Voltage Circuit Breaker
Dielectric combined voltage tests (BIAS test) on circuit breakers
In this test the circuitbreaker is submitted to two separate voltages at the same time:…
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