SL1122A200

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Gas Discharge Tube Arresters (GDT)

Gas Discharge Tube (GDT) arresters are essentially gas-filled capacitor tubes. They are most commonly used for overvoltage protection, to limit transients and to absorb surges. GDT arresters have been used in power distribution systems since the late 19th century. Although they have undergone multiple improvements over the years, the underlying principle remains unchanged.

SL1122A200 application field and working principle

The SL1122A200 is a two-stage, single-phase, high-voltage GDT arrester designed for the protection of communication lines and equipment. The device offers excellent protection against surges and transients. It is designed to limit the surge current to a much lower value, thereby removing the risk of damage to the protected equipment.

The SL1122A200 uses two distinct mechanism for protection. The first stage consists of an air-gap, which limits the surge voltage. The air-gap has been designed to provide avalanche breakdown when the surge voltage is exceeded. The current in the air gap is limited by an inductor, which is part of the surge protection device. The second stage consists of a gas-filled tube, which acts as a capacitor. This allows the arrester to absorb high voltage energy at frequencies outside the frequency range of the air-gap.

The SL1122A200 is designed to operate within two modes of operation depending on the level of the surge voltage. The first mode is an absorption mode, in which the device absorbs energy from the surge. The second mode is a breakdown mode, in which the device limits the current and voltage of the surge. The flow of current in the device is controlled by a control circuit which activates the device\'s voltage control circuits.

The SL1122A200 has an integrated voltage indicator which shows the voltage level within the device. This allows engineers to identify abnormal surge conditions. The device is also designed to be compatible with other GDTs, making integration into existing protection schemes effortless.

The SL1122A200 is highly effective for the protection of low voltage communication systems. It is designed to provide reliable protection, and is approved to international safety standards. It is also designed to be easy to install, making it an ideal choice for a range of low voltage protection requirements.

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