Breakers & Relays
Global study finds continuing moderate growth in protective relay market with commitment to improving protection coordination and grid security practices
Reconditioned SF₆ Gas: An Environmentally Friendly Alternative
Breakers & Relays

Effective and Safe Testing of GIS Switchgear
To fully assess the functionality of medium and high voltage circuit breakers, various mechanical and electrical parameters must be tested. Gas-insulated switchgear (GIS) in particular poses unique and special challenges, including the connection of the test equipment. In today‘s world, where testing is increasingly performed in a non-invasive manner, test systems must offer a certain flexibility and a wide range of testing solutions in order to get proper results in a timely manner.
Passive determination...
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Reconditioned SF₆ Gas: An Environmentally Friendly Alternative
When it comes to medium and high voltage circuit breakers, there is no better electrical insulator than sulfur hexafluoride (SF6). The manufactured gas is most commonly used to fill circuit breakers within utility substations to prevent and quench arcing events. SF6's impeccable dielectric...

Selecting Substation Medium-Voltage Switchgear: GIS vs. AIS
Understanding differences between GIS and AIS in five points BY GAETAN DJENANE, Schneider Electric, Inc. Many considerations must be taken into account before selecting the electrical medium-voltage (MV) switchgear that best meets a user’s needs. From a management perspective,...

A Closer Look into the True Cost of Replacing Electrical Switchgear
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Vacuum Interrupter Testing for Circuit Breakers
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SAME DAY SWITCHING
Same day switching avoids the extended outages and human and equipment costs associated with inoperable and broken switches.The vast majority of air break disconnect and ground switches in electric power networks typically receive no appreciable maintenance. This invariably results in the inability...

Effective and Safe Testing of GIS Switchgear
To fully assess the functionality of medium and high voltage circuit breakers, various mechanical and electrical parameters must be tested. Gas-insulated switchgear (GIS) in particular poses unique and special challenges, including the connection of the test equipment. In today‘s world, where...

Reconditioned SF₆ Gas: An Environmentally Friendly Alternative
When it comes to medium and high voltage circuit breakers, there is no better electrical insulator than sulfur hexafluoride (SF6). The manufactured gas is most commonly used to fill circuit breakers within utility substations to prevent and quench arcing events. SF6's impeccable dielectric...

Protection of Electrical Power Transformers
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