SAVUS Emergency Power Module with Mechanical Interlock
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Solution Overview
Problem
Current solutions for temporary emergency power connections in residences during disasters are costly, complex, and often require utility interaction, posing safety risks due to back-feeding and requiring cumbersome modifications, while lacking a simple and safe low-cost option.
Innovation Solution
A power connection system, SAVUS, that includes a removable module for circuit breaker boxes allowing selective auxiliary AC power from an external source, ensuring safety by preventing connection to the home wiring until the main circuit breaker is disconnected from utility power, using a sliding plate mechanism and a 3-prong socket for secure connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If permanent automatic power generators and transfer switches are installed, then reliable emergency power is provided, but cost and system complexity increase significantly
Solution Approach 1:
The system divides the emergency power function into separate modular components: a generator interface module, a transfer switch module with interlocking mechanisms, and a panel mounting assembly. Each module performs a specific function and can be independently installed or replaced, reducing overall system complexity while maintaining reliability
Solution Approach 2:
The transfer switch module includes pre-configured interlocking mechanisms and mechanical linkages that are installed beforehand to prevent simultaneous connection of utility and generator power. The physical interlocks and keyed mechanisms are prepared in advance to ensure safe operation without requiring complex control systems
2Reliability
If utility interaction and permitting processes are required, then code compliance is ensured, but installation time and coordination difficulty increase
Solution Approach 1:
The system is designed as modular units that can be installed in sequence, allowing utility coordination to occur in stages rather than requiring complete system approval beforehand. The transfer switch module and generator interface can be prepared separately, reducing coordination complexity and time
Solution Approach 2:
The system includes self-contained safety mechanisms such as mechanical interlocks and keyed access features that automatically enforce code requirements without requiring continuous utility supervision or complex permitting processes, enabling faster installation while maintaining compliance
3Reliability
If wires and drilling holes in internal and external walls are required, then proper electrical connections are achieved, but installation cost and structural modification increase
Solution Approach 1:
The transfer switch module is designed with universal mounting features that accommodate various panel types and configurations without requiring custom drilling or structural modifications. The module can be installed in existing breaker openings or mounted to the panel interior, providing multiple installation paths that preserve wall integrity
Solution Approach 2:
The transfer switch module is designed to nest within existing circuit breaker panel openings, utilizing the existing panel structure and mounting infrastructure. This eliminates the need for external wall drilling and structural modifications while maintaining proper electrical connections through the existing panel framework
4Ease of operation
If simple cable connections like Suicide Cords are used, then installation simplicity is achieved, but safety risks due to back-feeding increase
Solution Approach 1:
The transfer switch module serves as an intermediary device between the generator and the electrical system, providing controlled connection points and mechanical interlocks that prevent back-feeding while maintaining simple cable connections. The module mediates the power flow to ensure safety without requiring complex procedures
Solution Approach 2:
The system includes self-protecting features such as mechanical interlocks that automatically prevent simultaneous connection of utility and generator power, and keyed access mechanisms that ensure proper connection sequence. These self-service safety features protect against back-feeding without requiring external supervision or complex control systems
5Reliability
If large sliding metal plates and external wiring are used, then safe auxiliary power connection is achieved, but device complexity and modification requirements increase
Solution Approach 1:
The connection mechanism is divided into separate functional modules: a transfer switch module with integrated interlocking, a generator interface module, and a panel mounting assembly. This segmentation reduces the complexity of any single component while maintaining the overall safety function
Solution Approach 2:
The transfer switch module is designed to fit standard circuit breaker panel openings and work with various panel types without requiring custom fabrication or extensive modifications. The universal design reduces complexity by eliminating the need for custom-large plates while maintaining safe connection functionality
Data Source
AI summary
The embodiments of a “SAVUS” disclosed herein are simple, safe, low cost devices used to connect emergency power to an entire home. The embodiments of SAVUS are configured to install into most residential types of circuit breaker front panels and require only one available circuit breaker space for installation. SAVUS mechanically interlocks with the main circuit breaker and will not allow connection of an external power source to the circuit breaker box until utility power is turned off for safety.