Switchgear Front Cable Access via Detachable Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional switchgears require a larger installation area due to the rear placement of cable connection portions, necessitating increased depth and workspace for rear-side cable working, which limits space efficiency.
Innovation Solution
A switchgear design that allows cable leading from above and enables cable connection work from the front side by detachably configuring the control portion, reducing the overall depth and allowing closer installation to walls or adjacent apparatus.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the cable connection portion is placed at the rear of the switchgear to adapt to cable leading from above, then the switchgear can accommodate cable leading from above, but the depth dimension of the switchgear is enlarged
Solution Approach 1:
The cable connection portion is repositioned from the rear (depth direction) to the upper side (height direction) of the switchgear. This dimensional change allows cables to lead from above without increasing the depth dimension, as the connection is now made in the vertical dimension rather than the depth dimension.
Solution Approach 2:
Instead of placing the cable connection portion at the rear to accommodate cables leading from above, the invention inverts the approach by placing it at the upper side. This inversion allows the same functional requirement (cable leading from above) to be met without the adverse effect of increased depth.
2Ease of operation
If the cable connection portion is placed at the rear of the switchgear, then cable connection work can be performed, but a workspace must be secured at the rear, increasing installation area requirements
Solution Approach 1:
The cable connection work is moved from the rear (depth direction) to the upper side (height direction) of the switchgear. This allows cable connection work to be performed from above or the front side without requiring workspace at the rear, thereby reducing the installation area footprint.
3Ease of operation
If the control portion is made detachable to enable front-side cable working, then cable connection work can be performed from the front, but the device complexity increases
Solution Approach 1:
The switchgear is divided into a main body and a detachable control portion. The control portion can be removed to provide access to the cable connection portion from the front side. This segmentation allows the cable connection work to be performed from the front without permanently increasing device complexity, as the detachable control portion can be reattached after work is completed.
Data Source
Figure 1(a)~1(b)
Figure 2
Figure 3
AI summary
Provided is a switchgear with its installation area reduced even in the case where a power cable is led in from above. A cable connection portion (7) is placed, above a main function portion (5) accommodating a breaker (2) in an airtight tank (1), in a cable compartment (11 having an opening portion facing a front side of a switchgear (101). A control portion (6) is detachably placed in front of the opening portion of the cable connection portion (7). When cable connection work is performed, the control portion (6) is detached, so that the connection work is performed from the front side of the switchgear. An upward extended portion (5a) is formed at a rear of the main function portion (5) so that a lightning arrester or a transformer (13) for instrument is placed on the upward extended portion (5a) and a cable (10) is connected.