CG2800L

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A Gas Discharge Tube (GDT) Arrester is a type of electrical protector that provides lightning and surge protection and acts as an early warning indicator to assist in the protection of electronic circuit boards such as those found in industrial and commercial applications. GDT Arresters are used to protect users and equipment from both direct and indirect lightning strikes.

A Gas Discharge Tube (GDT) Arrester is a two-terminal device consisting of three main components, namely, a gas-filled tube, a spark gap, and a spark gap discharge resistor. The Active Electrode is the spark gap, which is filled with a compatible dielectric gas with an initial partial pressure and the reference electrode is the external resistor, which is connected to ground. The active electrode is a spark gap filled with a non-flammable gas, such as sulfur hexafluoride (SF6). Under normal conditions, the gap is filled with the specified gas, allowing current to pass through the tube and the external resistor without problem. However, when a voltage surge originating from lightning strikes occurs, the air between the terminals is ionized and an electrical discharge forms inside the tube, creating a spark. This spark diverts the dangerous surge of current away from the equipment and redirects it to the ground through the external resistor.

One example of a Gas Discharge Tube (GDT) Arrester is the CG2800L, which is designed for use in medium power industrial applications and is UL Recognized, CSA Certified, and ROHS compliant. The CG2800L is designed to offer excellent protection against surges and inductive switching transients. It features a rugged metal oxide varistor (MOV) and a GDT Arrester combination for strike performance and robustness.

The working principle of the CG2800L is as follows. Initially, the GDT limits the surge voltage and current at the terminals of the MOV. If the surge voltage and current exceed the MOV limits, the GDT partially air-gaps to control the voltage and current at the MOV terminals. This air gap further limits the surge voltage and current. It then acts as a spark gap in conjunction with the MOV, ensuring efficient protection against overvoltages. Following a surge, the GDT completely air-gaps and the MOV recovers, thus restoring protection. The combined function of the CG2800L provides optimum protection against lightning related transients.

The CG2800L is designed to be used in applications such as solar power inverters, DC/DC converters, industrial control panels, and surface mount electronic equipment. It’s able to withstand high surge currents and is suitable for continuous operation at a wide range of temperatures. The CG2800L is also ideal for automotive applications, given its ability to adapt to the harsh environmental conditions found in this sector. Additionally, the robust GDT Arrester in the CG2800L offers enhanced clamping to reduce nuisance trips and offer protection from prolonged surge events.

In summary, the CG2800L Gas Discharge Tube Arrester is designed to offer excellent protection against electrical surge events, giving efficient protection from lightning strikes and inductive switching transients. The CG2800L is suitable for use in a variety of applications, including solar power inverters, DC/DC converters, industrial control panels, surface mount electronic equipment, and automotive applications. It’s able to withstand high surge currents and is suitable for continuous operation in a wide range of temperatures. The CG2800L is the perfect solution for lightning and surge protection in industrial and commercial applications.

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