SL1021A350RG

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Gas Discharge Tube (GDT) Arresters have been around for many years and have been used to protect against power line surges, lightning and other high voltage transient events. GDT Arresters are among the most reliable protection devices for protecting power systems against such threats. The SL1021A350RG is an excellent example of a GDT Arrester and it has various applications and working principles.

SL1021A350RG Application Field

The SL1021A350RG is a highly reliable dual-stage gas discharge tube arrester that is designed for steady state voltage/surge protection of alternating current power systems under high frequency transients or lightning environments. It can be deployed in various applications, such as power system protection, telecommunications systems, medium-voltage installations and high frequency applications. The SL1021A350RG is UL-listed and its design is based on the tested and proven Single Stage Arresters (SSA) technology. It is easy to install, and it provides reliable protection against over-voltage and current surges for loads up to 35 kV.

SL1021A350RG Working Principle

The SL1021A350RG is designed to protect against over-voltage and current surges. The GDT device is comprised of a two-stage gas discharge tube with built-in voltage suppression. The device’s first stage provides steady state performance of up to 10 kV. This is achieved by its use of a multi-layer metal oxide resistor element, which is connected in series with its gas discharge tube. This allows the device to block high voltage and current surges without overloading its internal components.

The second stage of the SL1021A350RG provides surge protection against transient voltages. It does this by connecting its gas discharge tube in parallel with a metal oxide resistor element. This allows the device to withstand high dV/dt transients with minimal losses. When the surge voltage exceeds its safety threshold, the device’s gas discharge tube is triggered, which acts as a voltage clamp and protects the load from a dangerous surge. When the surge passes, the device quickly resets and is ready to provide protection again.

In addition, the SL1021A350RG includes a built-in neon lamp for visual indication of overvoltage protection. The neon lamp is triggered when the device reaches its maximum allowed voltage rating. This helps to alert the user that a dangerous surge event has occurred and the device needs to be replaced. It is also temperature tolerant and can be operated in temperatures up to 85° C.

Conclusion

Overall, the SL1021A350RG is an excellent example of a GDT Arrester and it offers reliable and effective protection against over-voltage and current surges. It is easy to install and can be used in various applications, making it an ideal choice for power system protection, telecommunications systems, medium-voltage installations and high frequency applications. Its two-stage design makes it more dependable and its built-in neon lamp allows users to easily monitor its performance. Therefore, the SL1021A350RG is an effective and reliable protection device for both steady state and surge protection.

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