一种电动检修隔离开关柜
By combining a contactor with a three-position disconnector, the electric maintenance disconnector cabinet achieves rapid electrical isolation under load conditions, solving the problem of needing to disconnect the upstream circuit breaker first in the existing technology, improving emergency maintenance efficiency and providing real-time monitoring functionality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG TAIKAI DISCONNECTOR CO LTD
- Filing Date
- 2025-08-22
- Publication Date
- 2026-07-17
AI Technical Summary
In the existing technology, when the electric maintenance disconnect switch cabinet is under maintenance or a sudden emergency fault occurs, the upstream circuit breaker must be de-energized first, and then the disconnect switch must be opened, which leads to a prolongation of operation and maintenance time and affects the normal operation of the subway line.
An electric maintenance disconnect switch cabinet was designed, which combines a contactor and a three-position disconnect switch. The contactor disconnects the equipment from the power supply line under load conditions. After the contactor disconnects the line, the three-position disconnect switch switches the line through open, closed and grounding positions to disconnect or switch the line. It is equipped with real-time voltage display, live display and monitoring functions.
It enables rapid electrical isolation of the line without relying on the upstream circuit breaker, shortens the operation and maintenance time, improves the emergency maintenance efficiency of the subway line, and has real-time monitoring and display functions.
Smart Images
Figure CN224520512U_ABST
Abstract
Claims
1. An electrically operated maintenance isolating switchgear cabinet comprising a cabinet body, characterised in that, The cabinet contains a secondary control room and a primary high-voltage room arranged vertically. The primary high-voltage room contains a three-position disconnect switch, a three-position operating mechanism, and a contactor. The three-position operating mechanism is used to realize the electric operation of the three-position disconnect switch. The secondary control room contains an integrated control module, secondary wiring terminals, buttons, changeover switches, circuit breakers, and a live display device.
2. The electric maintenance isolation switch cabinet according to claim 1, characterized in that, The front wall of the cabinet has an inner front door and an outer front door, which are set both inside and outside.
3. The electric maintenance isolation switch cabinet according to claim 2, characterized in that The outer front door has a first observation window, and the inner front door has a second observation window.
4. The electric maintenance isolation switch cabinet according to claim 3, characterized in that, The top of the cabinet has a live display screen.
5. The electric maintenance isolation switch cabinet according to claim 4, characterized in that An insulating partition is provided between the three-position operating mechanism and the three-position disconnect switch.
6. The electric maintenance isolation switch cabinet according to claim 5, characterized in that The three-position operating mechanism has a manual operating hole for the contact position and a manual operating hole for the open position.
7. The electric maintenance isolation switch cabinet according to claim 6, characterized in that The primary control room also has incoming copper busbars, outgoing copper busbars, and grounding copper busbars.
8. The electric maintenance isolation switch cabinet according to claim 7, characterized in that The cabinet contains a camera and a temperature and humidity sensor.