Circuit breaker interlocking switch device and safety low-voltage cabinet
A technology for interlocking switches and circuit breakers, which is applied to substations/switchgear boards/panels/desks, substations/switch layout details, electric switches, etc., which can solve the problems of high assembly precision requirements, poor device reliability, and difficult angle control and other issues to achieve good scalability, high security, and good reliability
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Embodiment 1
[0025] Embodiment 1: A circuit breaker interlock switch device.
[0026] as attached Figure 1-5The shown circuit breaker interlock switch device includes three interlock units 2, and the interlock units 2 are respectively connected to the corresponding circuit breakers, and the interlock units 2 are connected by cables 1; An interlocking unit 2 includes a base plate 3 and a control part 4, a trigger part 5 and a guide plate 8 arranged on the base plate 3. The control part 4 includes a transmission end 41, a cable fixing end 42 and a limit end 43. The transmission end 41 is rotatably connected to the base plate 3 through the drive shaft 44 and is fixedly connected to the main shaft of the corresponding circuit breaker. The transmission end 41 is triggered to rotate by the opening / closing of the corresponding circuit breaker; the fixed end 42 of the cable is fixedly connected to the transmission end 41 and driven by the rotation of the transmission end 41, the cable fixed end ...
Embodiment 2
[0030] Embodiment 2: a safe low-voltage cabinet.
[0031] A safety low-voltage cabinet is provided with at least three circuit breakers, and the circuit breakers are provided with the circuit breaker interlock switch device described in Embodiment 1.
[0032] When the circuit breaker interlock switch device in the above two embodiments is in use, the opening and closing of the circuit breaker is transmitted to the control part 4 through the drive shaft 44 of the interlock unit, thereby driving the control part 4 to rotate clockwise or counterclockwise , when the circuit breaker is closed, the control part 4 rotates counterclockwise, the first cable 11 and the second cable 12 are pulled upward, and the second cable 12 drives the trigger part 5 of the next interlock unit to move to trigger the emergency switch switch, so that the corresponding circuit breaker cannot be closed; when the control part 4 is turned counterclockwise until the circuit breaker is in the closed state, th...
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