CG90LSTR

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Gas Discharge Tube (GDT) arresters are transformers that use molecular activity to modulate electronic signals. Produced by a variety of manufacturers, GDT arresters have several application fields and work on the principle of electrical force, or electrostatic induction. CG90LSTR is a type of GDT arrester, developed by ABB, particularly designed for the protection of low and mid-range currents. It is used to protect electrical cables, electrical motors, electronic circuits and electrical equipment components. It has a ceramic body and a curved copper conductor that covers the inner part of the body. Thanks to the curved shape, the current is regulated, while the ceramic body prevents the breaking of the protective contact. The specific construction of the CG90LSTR gives it excellent properties for protection against short-circuits and protection against overvoltage.

GDT arrester provides protection against abnormal current by limiting the current and voltage amplitude in the circuit. Consequently, the components of the device are not damaged or destroyed by overvoltage or overcurrent events. When the voltage amplitude goes over the breakdown limits it also limits the voltage to an acceptable level. This prevents the power supply from being adulterated by surges.

To achieve this, the CG90LSTR is designed to protect against transient overvoltage and overcurrent. It does this through the use of large capacitors which reduce the peak of the incoming alternating current. This reduces the current amplitude, preventing the current from tripping the protective contact.

In addition, the CG90LSTR has a thermal device which prevents the device from overheating during the sudden surges. This ensures that the device can continue to provide protection even in cases when there is a high amount of electromagnetic interference. This also prevents any possible damage to the rest of the electrical circuit.

The CG90LSTR also has a gas-filled catalytic braking system which is designed to dissipate excessive energy so that the current does not damage the equipment. This system breaks down the energy into smaller particles until the voltage finally stabilizes at the desired level. This ensures that the voltage does not reach beyond a certain threshold and thus, prevents any damage.

Finally, the CG90LSTR has several safety features built into its design. This includes an arcing limiter, temperature sensor, and a spark gap to detect and prevent arcing. The arcing limiter prevents any current leakage from damaging the device while the temperature sensor and spark gap help reduce the surge duration and protect the equipment from any damage caused by excessive energy.

The CG90LSTR is a powerful and reliable GDT arrester that can provide effective protection against short-circuits and overvoltage. Thanks to its design, it can not only provide reliable protection but also help reduce the scope of damages caused by overvoltage events. Additionally, its safety features further protect the device and the connected equipment from any possible damage.

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