Ads
related to: gas insulated switchgear switch
Search results
Results from the WOW.Com Content Network
A switchgear may be a simple open-air isolator switch or it may be insulated by some other substance. An effective although more costly form of switchgear is the gas-insulated switchgear (GIS), where the conductors and contacts are insulated by pressurized sulfur hexafluoride gas (SF 6). Other common types are oil or vacuum insulated switchgear.
The integration allows to reduce the overall substation footprint from 50% to more than 70% when compared to substation realized using conventional air insulated equipment. An hybrid module can incorporate: One (or more) circuit breaker; One (or more) disconnector and earthing switch; Gas-insulated voltage transformers; Cast-resin current ...
After contact separation, current is carried through an arc and is interrupted when this arc is cooled by a gas blast of sufficient intensity. [1] SF 6 gas is electronegative and has a strong tendency to absorb free electrons. The contacts of the breaker are opened in a high-pressure flow of sulfur hexafluoride gas, and an arc is struck between ...
6 gas under pressure is used as an insulator in gas insulated switchgear (GIS) because it has a much higher dielectric strength than air or dry nitrogen. The high dielectric strength is a result of the gas's high electronegativity and density. This property makes it possible to significantly reduce the size of electrical gear.
Gas (gas circuit breaker (GCB) or gas-insulated switchgear (GIS)), most commonly sulfur hexafluoride (SF 6) or a mixture of gases including SF 6. [36] Although it is the most expensive, these gases are a much more effective insulator than air. [37]
A dielectric gas, or insulating gas, is a dielectric material in gaseous state. Its main purpose is to prevent or rapidly quench electric discharges . Dielectric gases are used as electrical insulators in high voltage applications, e.g. transformers , circuit breakers (namely sulfur hexafluoride circuit breakers ), switchgear (namely high ...
Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!
move to sidebar hide. From Wikipedia, the free encyclopedia
Ads
related to: gas insulated switchgear switch