Transformer Bushing Compartment for High Current Connections
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Solution Overview
Problem
The existing design of electrical transformers limits the available space for bushing arrangements, particularly in high current applications, where additional connections are needed, and the side-mounted bushing compartments increase shipping dimensions and expose connectors to damage.
Innovation Solution
The transformer design features a two-level bushing assembly with the primary bushing on the cover and a supplementary bushing compartment on the side wall, allowing for additional high current connections without significantly increasing the transformer's shipping dimensions, using a sealed opening on the side wall for the compartment and flexible conductors for inner connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the bushing compartment is arranged on the cover of the tank, then electrical connection is easy and space for connections is available, but the available space is limited for additional high current connections
Solution Approach 1:
The invention transitions from a single-level bushing arrangement on the cover to a two-level arrangement by attaching a bushing compartment to the side wall. This vertical/dimensional extension provides additional space for high current connections while preserving the original cover-mounted bushings for standard connections, thereby resolving the space limitation without compromising electrical connection ease.
2Adaptability or versatility
If the bushing compartment is arranged on the side portion of the tank, then additional connection space is available, but shipping dimensions increase and connectors are exposed to damage
Solution Approach 1:
The bushing compartment is designed as a nested structure attached to the side wall, containing its own internal bushings and connections within a protected enclosure. This nesting approach provides additional connection space while shielding the connectors from external damage, as they are housed within the compartment rather than exposed on the external surface.
3Adaptability or versatility
If a side-mounted bushing compartment is added, then additional high current connections are possible, but the shipping dimensions of the transformer increase
Solution Approach 1:
The bushing compartment is designed as a localized addition to the side wall rather than a full-side extension. By concentrating the additional connection capability in a compact, targeted compartment rather than expanding the entire transformer housing, the invention achieves high current connection capability while minimizing the increase in overall shipping dimensions.
Data Source
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AI summary
Electrical transformer, comprising: a tank (2) having sidewall portions (3), a cover (4) and a bottom portion (5), whereby the cover (4) is carrying a first bushing assembly (6) and wherein a side portion (3) has an opening (8); a magnetic core (9) and a winding assembly (10) disposed in the tank (2); a bushing compartment (11) attached on the side wall portion (3) and disposed to seal the opening (8); said bushing compartment (11) having sidewalls (12), a cover (13) and a bottom portion (14), whereby the bottom portion (14) of said bushing compartment (11) having a second opening (15) therein for receiving an second bushing assembly (16), said second bushing assembly (16) having electrical conductor means (17) being mounted through the second opening (15) and having first terminals (18) being encased and electrically connected with the winding assembly (10) and second terminals (19) remaining outside of the bottom portion (14) of said bushing compartment (11).