Since photovoltaic combiner boxesare installed in outdoor environments, it is necessary to consider lightning protection for these boxes. For this purpose, a photovoltaic DC-specific lightning surge protector (i.e., lightning arrester) is paralleled at the DC output part of the combiner box. The combiner box is a complete installation in the photovoltaic power generation system that ensures … Read more
A circuit breaker, including high voltage and low voltage types, is an electrical protection device available in various forms, all featuring arc extinguishing devices. The air break switch, officially known as an air-type low voltage circuit breaker, is a specific type of circuit breaker mainly used in low voltage circuits. It utilizes air as the medium … Read more
Low Voltage Circuit Breakers Low voltage circuit breakers, also known as automatic switches, are electrical devices that serve as manual switches and can automatically provide under-voltage, over-voltage, overload, and short-circuit protection. They are used for distributing electrical energy, infrequently starting asynchronous motors, and protecting power lines and motors. In cases of severe overload, short circuit, … Read more
A mechanical switching device (or a combination device) in low-voltage distribution systems, capable of automatically disconnecting the circuit when the residual current reaches or exceeds a set value, is known as a Residual Current Operated Protective Device (RCD), also referred to as a Ground Fault Circuit Interrupter (GFCI). Installing RCDs in low-voltage distribution systems is one of … Read more
An Alternating Current (AC) Contactor, widely used in power switching and control circuits, is a type of contactor. These contactors can be categorized into industrial contactors and building/domestic contactors. Working Principle of AC ContactorsAC contactors operate by opening and closing circuits using main contacts and executing control commands through auxiliary contacts. Main contacts are generally normally open, … Read more