Power Switch Overcurrent Protection Using Current Rise Detection

The patent replaces the traditional mechanical visible-break switch with an electromechanical system using solenoids to actuate circuit breakers. The solenoids provide magnetic actuation to trip the circuit breakers, eliminating the need for manual operation of complex mechanical switching mechanisms while maintaining the ability to visually indicate circuit status through window panes and flags.

The patent introduces solenoids as intermediary devices between the control mechanism and the circuit breakers. These solenoids act as mediators that convert electrical signals into mechanical motion to trip the circuit breakers, providing a more reliable and less complex system than direct mechanical linkages while still achieving the desired contact separation and visual indication.

The patent replaces exposed manual mechanical switches with enclosed electromechanical solenoid actuators. The solenoids are housed within protective enclosures that seal them from environmental elements such as moisture and dust, while still allowing electrical control signals to actuate the circuit breakers reliably without direct human contact with moving parts.

The system incorporates automatic tripping mechanisms where the solenoids can be actuated by detection of abnormal conditions (such as phase loss or overcurrent) without requiring manual intervention. The circuit breakers automatically open under fault conditions, and the visual indication system automatically updates to show the tripped state, providing self-monitoring and self-protection capabilities.

The patent incorporates detection mechanisms that monitor the three-phase power conditions and provide feedback to the control system. When phase loss or unbalanced loading is detected, the system automatically actuates the appropriate solenoids to trip the affected circuit breakers, preventing equipment damage. The visual indication system provides continuous feedback on the status of each phase and circuit breaker position.

The patent converts the potentially harmful effect of phase loss into a protective mechanism by using the detection of abnormal phase conditions as a trigger for automatic circuit breaker tripping. The same monitoring system that detects phase loss also initiates the protective action, turning a harmful condition into an opportunity for automatic safety intervention that prevents further damage to electrical equipment.

The patent designs a universal solenoid actuator mechanism that can control multiple circuit breakers through a single control interface. The solenoids are configured to simultaneously or selectively actuate different circuit breakers based on the detected fault condition, providing multi-functionality that reduces the number of individual switching components while maintaining the ability to control each circuit independently when needed.

The patent merges multiple individual switching functions into a integrated solenoid actuation system. Instead of having separate manual switches for each circuit, the system combines the control functions into a unified electromechanical system where solenoids can selectively trip individual circuit breakers or groups of circuit breakers based on the specific fault condition, reducing overall system complexity while preserving circuit-specific control capability.