US 6,788,172 B1 · Device for controlling the closing of a power circuit breaker

Abstract

A device is for controlling the closing of a power circuit breaker according to operational parameters. The device includes an indication element for indicating the readiness for closing and a coupling element which interacts with the indication element. The operational parameters, for example, energy store empty or switchgear cell door open cause the indication element to pivot into the position not ready for closing and cause the coupling element to move into its disabled position. The indication element for indicating the readiness for closing and additional indication elements, which represent the position of the switching contacts and the state of the energy store, are adjacently arranged in an axial manner such that they can pivot and are provided with interacting drives in order to effect a forced drive of the indication element for indicating the readiness for closing when the position of the switching contacts or the state of the energy store does not enable or permit a closing of the power circuit breaker.

Claims28

Dependent claims

A device for controlling the closing of a power circuit breaker according to at least one operational parameter, the power circuit breaker including switching contacts, an energy store for transferring the switching contacts from an opening position into a closing position, a latching device for maintaining a tensioned state of the energy store and at least one closing actuator for releasing the latching device and enabling the energy store, the device for controlling the closing comprising:

a coupling element, arranged in a path of force transfer from the closing actuator to the latching device, movable into an active position and an inactive position, an operational parameter causing the coupling element to be transferred into the inactive position, in which the force transfer from the closing actuator to the latching device is interrupted;
and
an indicating element, dependent on the coupling element and movable between only two positions respectively corresponding to exactly two states, to visually present the two states of “ready for closing” and “not ready for closing”, wherein the indicating element for closing readiness moveable in response to an operational parameter, and wherein the indicating element and the coupling element are in mutual engagement for transferring the coupling element into its inactive position when the indicating element assumes the “not ready for closing” position.

A device for indicating operational states of a circuit breaker, comprising:

a coupling element, adapted to be movable into an active position and an inactive position, at least one operational parameter of the circuit breaker causing the coupling element to be transferred into the inactive position, in which the force transfer from the closing actuator to the latching device is interrupted;
and
an indicating element, dependent on the coupling element, adapted to be movable and to visually present states of closing readiness of contacts of the circuit breaker, wherein the indicating element can be acted on directly by an operational parameter and is able to be transferred by an operational parameter from a first closing position into a second non-closing position, and wherein the indicating element and the coupling element are in mutual engagement for transferring the coupling element into its inactive position when the indicating element assumes the second non-closing position, wherein the indicating element is movable about a pivot axis and wherein the coupling element, which is designed as a lever, is displaceable in its longitudinal direction by the closing actuator and includes a frame-like middle part, reaches over a fixed guiding surface with a clearance, and is able to be transferred by at least one driver of the indicating element into at least one of the active position and the inactive position.

Dependencies are inferred from the claim text.

Device for controlling the closing of a power circuit breaker

Life of this patent

Device for controlling the closing of a power circuit breaker

Life of this patent

Abstract

Claims28