Huge source of knowledge about switchgear
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- Apr- 2019 -17 AprilMV AC Switchgear
Sectionalizers role in MV grids
To improve open ring security, one or more sectionalizer can be used between the primary…
Read More » - 16 AprilHigh Voltage Circuit Breaker
Auxiliary contact in switchgears
Auxiliary contacts are contacts that show the circuit breaker or switchgear position. At least one…
Read More » - 15 AprilSwitchgear Automation
Typical sensor and control location in GIS according to IEC 61850
The location of control and communication elements may vary with manufacturer arrangement. A common arrangement…
Read More » - 14 AprilSwitchgear Automation
Online GIS PD monitoring system according to IEC61850 protocol
UHF and ultrasonic can detect PD well; each method has its advantages. UHF method is…
Read More » - 13 AprilHigh Voltage Circuit Breaker
Gasket design for SF6 leakage
Leaks occur because the gaskets used in the equipment begin to leak as the gasket…
Read More » - 12 AprilVacuum Switchgear
Vacuum circuit breaker for ELECTRIC ARC FURNACES (EAF) switching
In furnace we have real and reactive power, and the furnace resistance and reactance can…
Read More » - 11 AprilFuse
Medium voltage fuse structure and principle
For medium voltage fuse it is often necessary to have fuse elements that are longer…
Read More » - 10 AprilSwitchgear Automation
Smart vacuum circuit breaker prototype based on IEC61850 standard
The IEC61850 standard can be extended based on the characteristic of smart vacuum breaker status…
Read More » - 9 AprilHigh Voltage Circuit Breaker
Typical transient recovery voltage waveshapes under fault conditions
TRV waveshapes caused by fault current interruption are usually classified into three types: exponential,oscillatory, and…
Read More » - 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…
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