Interlock system for a low, medium or high voltage switchgear
AssigneeABB Schweiz AG
InventorsMichal Skuci, Josef Cernohous
Life of this patent
Estimating the term…
Abstract
An interlock system for a low, medium or high voltage switchgear includes: a compartment; a door; a door handle; and a circuit breaker. The door permits access to an inside of the compartment. The door handle opens and closes the door. The circuit breaker is located in the compartment. The door handle is movable from a closed position to an open position. When the door handle is in the closed position, the door does not to open, and when the door handle is in the open position, the door opens. A movement of the door handle from the closed position to the open position places the circuit breaker in a locked configuration. In the locked configuration the circuit breaker is not operable.
Claims14
An interlock system for a low, medium or high voltage switchgear, comprising:
- a compartment;
- a door;
- a door handle;
- and
- a circuit breaker,
- wherein the door is configured to permit access to an inside of the compartment,
- wherein the door handle is configured to open and close the door,
- wherein the circuit breaker is located in the compartment,
- wherein the door handle is configured to move from a closed position to an open position,
- wherein the interlock system is configured such that, when the door handle is in the closed position, the door is configured not to open, and when the door handle is in the open position, the door is configured to open,
- wherein a movement of the door handle from the closed position to the open position is configured to place the circuit breaker in a locked configuration, and wherein in the locked configuration the circuit breaker is not operational,
- wherein a movement of the door handle from the open position to the closed position is configured to place the circuit breaker in an unlocked configuration, wherein the movement of the door handle from the open position to the closed position is configured to activate a pushrod connected to a coupling system of the interlock system to enable the circuit breaker to be placed in the unlocked configuration, and wherein in the unlocked configuration the circuit breaker is operational, and
- wherein, when the door handle is in the closed position, a movement of the circuit breaker from a racked out configuration to a racked in configuration is configured to place the door handle in the locked configuration where the door handle is locked from moving from the closed position to the open position.
A low, medium or high voltage switchgear, comprising:
- a compartment;
- a door;
- a door handle;
- and
- a circuit breaker,
- wherein the door is configured to permit access to an inside of the compartment,
- wherein the door handle is configured to open and close the door,
- wherein the circuit breaker is located in the compartment,
- wherein the door handle is configured to move from a closed position to an open position,
- wherein a movement of the door handle from the closed position to the open position is configured to place the circuit breaker in a locked configuration, and wherein in the locked configuration the circuit breaker is not operational,
- wherein a movement of the door handle from the open position to the closed position is configured to place the circuit breaker in an unlocked configuration, wherein the movement of the door handle from the open position to the closed position is configured to activate a pushrod connected to a coupling system of an interlock system associated with the switchgear to enable the circuit breaker to be placed in the unlocked configuration, and wherein in the unlocked configuration the circuit breaker is operational,
- wherein, when the door handle is in the closed position, a movement of the circuit breaker from a racked out configuration to a racked in configuration is configured to place the door handle in the locked configuration where it is locked from moving from the closed position to the open position, and
- wherein, when the door handle is in the closed position, the door is configured not to open, and when the door handle is in the open position, the door is configured to open.
Dependencies are inferred from the claim text.