SL1021A300RG

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Gas Discharge Tube Arresters (GDT)

SL1021A300RG is a Gas Discharge Tube (GDT) arrester, which is often used to limit transientvoltages, such as lightning, switching surges, and other over-voltages. GDT arresters are similar to a spark gap. They provide a low impedance path for any excess current, acting as a buffer against high voltages. The SL1021A300RG is a two-electrode device, while a spark gap consists of three electrodes, and an ordinary wire has only one.

SL1021A300RG Application Field

The SL1021A300RG is an industrial grade GDT, suitable for use in many applications. It is used mainly in high and medium voltage power transmission, distribution, automation, communication, instrumentation, and other fields, in order to protect electrical equipment from lightning and other overvoltages. It can be installed on the transmission line, distribution line, power equipment, or communication equipment.

SL1021A300RG Working Principle

When there is an overvoltage, the small electron gap of the SL1021A300RG GDT triggers and produces an arc discharge. This arc discharge provides a low and short impedance path, allowing the excessive voltage to be safely discharged to ground. This protects the electrical equipment from both lightning and other overvoltages.

When the over-voltage is gone, the arc discharge is extinguished and the GDT returns to its normal state. The SL1021A300RG has a high peak current and short-circuit rating, and is designed to limit the rise time of a transient over-voltage to under 5 milliseconds. This provides great protection for electrical equipment.

The SL1021A300RG GDT is designed to be used in industrial applications. With its high energy absorption capacity, low insertion loss, high insulation resistance, low leakage current, and high operating current, it is a reliable and robust device for protecting electrical equipment.

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