Main Feed Thru Unit for Modular Metering
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Solution Overview
Problem
Existing power distribution systems for multi-unit buildings face challenges in fitting within space constraints and require extensive installation time and equipment, particularly when a main disconnect unit needs to be connected to an underground feed thru tap box in limited electrical rooms.
Innovation Solution
A main feed thru unit is configured as a service equipment or main service disconnect, combining a main disconnect unit with a feed through tap box to reduce installation time and equipment count, allowing for efficient power distribution to modular metering modules by integrating a main breaker and cross bus assembly within a compact enclosure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a main disconnect unit and feed through tap box are used as separate equipment, then the system provides complete functionality for power distribution, but the number of electrical gears increases and wall space requirements increase
Solution Approach 1:
The patent combines the main disconnect unit and feed through tap box into a single integrated main feed thru unit. The main breaker, feed thru bus assembly, and cross bus assembly are housed together in one enclosure, eliminating the need for separate equipment and reducing wall space requirements while maintaining all necessary functions for power distribution.
2Reliability
If a main disconnect unit and feed through tap box are connected with wiring, then the system provides complete electrical connectivity, but installation time increases and the number of electrical gears increases
Solution Approach 1:
By integrating the main disconnect unit and feed through tap box into a single enclosure with internally connected bus assemblies, the patent eliminates the need for external wiring between separate units. The feed thru bus assembly and cross bus assembly are pre-connected within the enclosure, ensuring reliable electrical connectivity while dramatically reducing installation time.
3Adaptability or versatility
If separate main disconnect unit and feed through tap box are installed, then the system provides complete power distribution capability, but the number of electrical gears increases and cost increases
Solution Approach 1:
The patent consolidates the main disconnect unit and feed through tap box into a single main feed thru unit, reducing the number of electrical gears from two separate units to one integrated unit. The enclosure houses both the main breaker and the bus assemblies, providing complete power distribution capability with fewer components.
4Reliability
If extensive wiring is used to connect main disconnect unit to feed through tap box, then the system provides complete electrical connectivity, but the footprint and cost increase
Solution Approach 1:
By housing the main disconnect unit and feed through tap box components within a single enclosure with internally connected bus assemblies, the patent eliminates the need for extensive external wiring. The feed thru bus assembly and cross bus assembly are positioned and connected within the enclosure, minimizing the electrical footprint while ensuring complete connectivity.
Data Source
AI summary
A main feed thru unit configured as a service equipment or a main service disconnect is provided for distributing power in modular metering mains. The main feed thru unit comprises an enclosure having a back side, a first side, a second side, a top side and a bottom side and a bus assembly. The bus assembly includes a feed thru bus assembly including a plurality of feed thru bus bars configured to receive line power at feed line terminals and pass thru power to feed thru terminals, a cross bus assembly including a plurality of cross bus bars extending between the first side and the second side and a main breaker coupled between the feed line terminals and the plurality of cross bus bars to feed power thru and output power via the plurality of cross bus bars. The enclosure is configured to allow electrical connection to the plurality of cross bus bars through an opening in at least one of the first side and the second side.