Switchgear with a gas-tight insulating space
View Patent ↗The present disclosure relates to switchgear. Various embodiments may include medium- or high-voltage switchgear with a gas-tight insulating space. For example, a switchgear may include: a gas-tight insulating space where an insulating gas is kept above atmospheric pressure and two switching contacts in the space. At least one of the contacts may movable with respect to a nozzle. The insulating gas may include a mixture of at least 90% by mass of nitrogen and oxygen or nitrogen and carbon dioxide. The nozzle may include a plastic with at least 65% by mass in total of the elements carbon, nitrogen, and oxygen.
1. A switchgear comprising:
a gas-tight insulating space where an insulating gas is kept above atmospheric pressure; and
two switching contacts arranged in the gas-tight insulating space;
wherein at least one of the two switching contacts is mounted movably with respect to a nozzle;
wherein the insulating gas comprises at least 90% by mass of nitrogen and oxygen or at least 90% by mass of nitrogen and carbon dioxide; and
wherein the nozzle comprises a material made up of at least 65% by mass in total of carbon, nitrogen, and oxygen.
2. The switchgear as claimed in claim 1 , wherein the nozzle comprises less than 1% by mass of fluorine.
3. The switchgear as claimed in claim 1 , wherein the nozzle comprises at least one plastic chosen from the group consisting of: polyamide and polyimide.
4. The switchgear as claimed in claim 1 , wherein the nozzle and the at least one of the two switching contacts are arranged symmetrically in relation to one another with respect to an axis of rotation.