Huge source of knowledge about switchgear
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- May- 2019 -17 MayMV AC Switchgear
Typical mechanical interlocks in MV metal clad switchgear according to IEEE standard
To prevent moving the removable element to or from the connected position when the switching…
Read More » - 16 MayHigh Voltage Circuit Breaker
Recommended commissioning tests for high voltage circuit breaker according to IEC
general checks including assembly,tightness,external insulation, paint, corrosion protection, operating devices, earth connection and operations counter…
Read More » - 15 MaySwitchgear Testing
Dynamic (contact) resistance measurements (DRM) test on circuit breakers
This test is used to determine the length and condition of the current carrying part…
Read More » - 14 MayHigh Voltage Circuit Breaker
relays and circuit breaker combination
closed circuit breaker has sufficient energy to open its contacts stored in one form r…
Read More » - 13 MaySwitchgear Testing
Intelligent switchgear opening and closing time operation acc to IEC 61850
For intelligent switchgear, the opening time shall be the time from the reception of the…
Read More » - 12 MayMV AC Switchgear
Different of trip release for circuit breakers in system
Trip circuits between the protection device and the circuit breaker consist of wiring ,auxiliary relays…
Read More » - 11 MaySwitchgear Automation
Interlocking system for switchgear automation in double busbar substation
Tripping by protective relays on all CBs is unrestricted. The opening command on all CBs,…
Read More » - 10 MaySwitchgear Automation
Operation time measurement in GIS according to IEC 61850
The principle of operation of switchgear is shown in First photo for a circuit breaker.The…
Read More » - 9 MayHigh Voltage Circuit Breaker
Fiber optic current measurement sensor in high voltage switchgear by ABB
Fiber-optic current sensors (FOCS) have reached a high degree of maturity and are about to…
Read More » - 8 MayHV AC Switchgear
Altitude factor(ka) from sea level for switchgear
For installations at an altitude higher than 1000 m from sea level, the required insulation…
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