KR-102963959-B1 - DISTRIBUTION BOARD

Abstract

The present invention relates to a distribution board equipped with a modular arc flash protection device capable of suppressing personal injury and property damage caused by fire by resolving arc flash caused by leakage current or short circuit in advance. To this end, a distribution board equipped with a modular arc flash protection device includes an arc flash output module that receives an arc flash detection signal and outputs a trip through a terminal, an arc sensor electrically connected to the arc flash output module to detect an arc flash, and a circuit breaker (MCCB) that automatically cuts off the power to the distribution board based on the signal from the arc sensor.

Inventors

• 김민철
• 강재호

Assignees

• (주)원테크

Dates

Publication Date

20260512

Application Date

20250421

Priority Date

20240919

Claims (8)

1. Arc flash output module that receives an arc flash detection signal and outputs a trip through a terminal; An arc sensor electrically connected to the above arc flash output module to detect an arc flash; and A circuit breaker (MCCB) that automatically cuts off the power to the distribution board based on the signal of the arc sensor; comprising The above-mentioned circuit breaker includes a plurality of load protection circuit breakers (MCCB, ELCB), and further includes a protection device on one side of the circuit breaker that receives a signal from a fuse and the arc sensor and trips the load protection circuit breaker to protect it. The above arc sensor is fixedly installed inside a distribution board through a bracket, and the bracket is L-shaped, with the arc sensor inserted and fixed into the upper part of the bracket. Distribution board equipped with a modular arc flash protection device.
2. In Article 1, A distribution board equipped with a modular arc flash protection device, characterized in that the above-mentioned arc flash output module is installed in a small space in a side, front, or embedded state as a single type or a modular type.
3. In Article 2, A distribution board equipped with a modular arc flash protection device, characterized in that the above-mentioned arc flash output module is configured as a high-speed output system.
4. In Article 1, A distribution board equipped with a modular arc flash protection device, characterized in that the above-mentioned arc sensor has various operating modes, including a selective cutoff output and all sensor outputs.
5. In Article 4, A distribution board equipped with a modular arc flash protection device, characterized in that the above-mentioned arc sensor can simultaneously monitor and trip the main feeder and various feeders, thereby isolating only the fault load from the normal load.
6. In Article 1, A distribution board equipped with a modular arc flash protection device, characterized in that the above-mentioned arc flash output module switches to a test mode in a normal operating state without tripping the feeder to verify the presence or absence of soundness, thereby inspecting and maintaining the arc sensor.
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Description

Distribution board equipped with a modular arc flash protection device The present invention relates to a distribution board equipped with a modular arc flash protection device. Generally, power distribution panels are installed in the final power supply systems of individual households, factories, and logistics warehouses. High-voltage and low-voltage distribution panels are equipped with various protective devices, including protection against arc flash and temperature rise. Protection measures are inadequate in the distribution board, which is the final load supply device. Major accidents, such as fires, are occurring due to short circuits and leakage caused by faulty or malfunctioning circuit breakers in distribution panels. In other words, while countermeasures regarding arcs and temperatures in busbars are being developed and applied to products in high-voltage systems within consumer power systems, countermeasures regarding arcs and temperatures in distribution boxes—the final loads—are insufficient, resulting in frequent damages to personnel and property caused by fires. FIG. 1 is a diagram illustrating the configuration of a distribution board equipped with a modular arc flash protection device according to one embodiment of the present invention. FIG. 2 is a diagram illustrating the circuit configuration of a distribution board according to one embodiment of the present invention. FIG. 3 is a drawing illustrating the external and internal structure of a distribution board according to one embodiment of the present invention. FIG. 4 is a drawing illustrating the fixed state of an arc sensor according to one embodiment of the present invention. Hereinafter, an embodiment of a distribution board equipped with a modular arc flash protection device according to the present invention will be described with reference to the attached drawings. At this time, the present invention is not limited or restricted by the embodiments. Furthermore, in describing the present invention, specific descriptions of known functions or configurations may be omitted to clarify the gist of the present invention. FIG. 1 is a diagram illustrating the configuration of a distribution board equipped with a modular arc flash protection device according to an embodiment of the present invention. FIG. 2 is a diagram illustrating the circuit configuration of a distribution board according to an embodiment of the present invention. Referring to FIG. 1 and FIG. 2, a distribution board (1) equipped with a modular arc flash protection device according to the present invention includes an arc flash output module (10), an arc sensor (20), and a circuit breaker (30), and the distribution board (1) can prevent accidents involving personnel and property damage caused by fire by resolving arc flashes caused by leakage current or short circuits in advance. In this embodiment, the arc flash output module (10) of the distribution board (1) receives an arc flash detection signal and outputs a trip through a terminal, the arc sensor (20) is electrically connected to the arc flash output module (10) to detect an arc flash, and the wiring circuit breaker (30) can automatically cut off the power to the distribution board (1) based on the signal from the arc sensor (20). In addition, the arc flash output module (10) is installed in a small space in a side, front, or embedded state as a single type or modular type, and is configured as a high-speed output system. In addition, the arc sensor (20) has various operating modes, including a selective cutoff output and all sensor outputs, and the arc sensor (20) can simultaneously monitor and trip the main feeder and various feeders, so that only the fault load can be separated from the normal load. In addition, the arc flash output module (10) can inspect and maintain the arc sensor (20) by switching to a test mode in a normal operating state without tripping the feeder to verify the health status. In addition, LV and MV cubicles require arc flash protection devices, and cubicle configurations vary depending on voltage levels, distribution structures, national standards, and practices; therefore, installation constraints for each cubicle also differ. The above-mentioned arc flash protection device can be installed on a newly configured panel or, in the case of a retrofit, on an updated panel of an existing cubicle; during renovation, the electrical panel is generally installed on different equipment, and the newly added device is configured in a compact size to fit within the available space. The PowerLogic A1 and A3 product families support various installation methods, and all units can be secured by rear DIN rail mounting, and since the total depth is 120 mm, the units can be easily installed on LV panels. If the panel depth is shallower, the PowerLogic arc unit can be installed with a DIN rail side mount, which makes the depth of the A125 or A3-F unit 70mm and the A3-S unit 35mm, and allows the DIN rail