US 12,322,932 B2
Interlock system for a low, medium or high voltage switchgear
Michal Skuci, Brno (CZ); and Josef Cernohous, Jamne nad Orlici (CZ)
Assigned to ABB Schweiz AG, Baden (CH)
Filed by ABB Schweiz AG, Baden (CH)
Filed on Aug. 2, 2021, as Appl. No. 17/391,053.
Claims priority of application No. 20190733 (EP), filed on Aug. 12, 2020.
Prior Publication US 2022/0052512 A1, Feb. 17, 2022
Int. Cl. H02B 1/38 (2006.01); H02B 1/052 (2006.01); H02B 11/28 (2006.01)
CPC H02B 1/38 (2013.01) [H02B 1/0526 (2013.01); H02B 11/28 (2013.01)] 14 Claims
OG exemplary drawing
 
1. 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.