Medium voltage circuit switch or breaker
AssigneeABB Schweiz AG
InventorsAndrea Bianco, Christian Reuber, Francesco Belloni, Juhani Koivupuro, Luciano Chenet
Life of this patent
Estimating the term…
Abstract
A medium voltage circuit switch or breaker includes: at least one movable contact; a fixed contact; and a mechanical or magnetical drive system, which moves the at least one movable contact to a closed or opened position by a movement of a rod and/or a lever. The mechanical or magnetical drive system is linked to a switching generating signal. The mechanical or magnetical drive system includes at least one pyrotechnical actuator or gas generator. The pyrotechnical actuator or the gas generator is linkable to the switching generating signal of the mechanical or magnetical drive system.
Claims15
A medium voltage circuit switch or breaker, comprising:
- at least one movable contact;
- a fixed contact;
- and
- a mechanical or magnetical drive system, which is configured to move the at least one movable contact to a closed or opended position by a movement of a rod and/or a lever, the mechanical or magnetical drive system being linked to a switching generating signal,
- wherein the mechanical or magnetical drive system comprises at least one pyrotechnical actuator or gas generator,
- wherein the pyrotechnical actuator or the gas generator is linkable to the switching generating signal of the mechanical or magnetical drive system, and
- wherein the pyrotechnical actuator or the gas generator is driven as a redundant actuation system, such that in a logical unit, in case of detection of a malfunction of the mechanical or magnetical drive, the pyrotechnical actuator or the gas generator is ignited instead, as a redundant trip function.
A method of operating a medium voltage circuit breaker having at least one movable contact, a fixed contact, and a mechanical or magnetical drive system, the method comprising:
- using the mechanical or magnetical drive system to move the movable contact to a closed or open position by moving a rod and/or a lever;
- linking the mechanical or magnetical drive system to a switching generating signal;
- providing the mechanical or magnetical drive system with at least one pyrotechnical actuator or gas generator and an opening spring, the opening spring being configured to drive the movable contact to the opened position upon being released;
- and
- linking the pyrotechnical actuator or the gas generator to the switching generating signal of the mechanical or magnetical drive system;
- wherein the pyrotechnical actuator or the gas generator is driven as a redundant actuation system, such that in a logical unit, in case of detection of a malfunction of the mechanical or magnetical drive, the pyrotechnical actuator or the gas generator is ignited instead, as a redundant trip function.
Dependencies are inferred from the claim text.