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 of switching times for gas-insulated medium-voltage switchgear
Normally, the breaker operating time and the contact resistances are measured on medium-voltage breakers. In addition, corresponding travel curves are also recorded in order to obtain conclusions about the state of the entire mechanism. For Contact time, the connection of the measurement leads is made directly to the main contacts or to easily accessible points such as busbars.
In gas-insulated medium-voltage installations, there are hardly any possibilities for...
