SG500 Circuit Protection

Gas Discharge Tube Arresters (GDT) are used to protect electrical systems from both external and internal over-voltage. They work by conducting current away from vulnerable areas during an over-voltage event, thereby protecting against indirect lightning strikes, switching surges, transient overvoltages, as well as other abnormal conditions. The SG500 series of GDTs, which are manufactured by the GDT Company, offers a variety of mechanisms for protecting the equipment from a range of overvoltage events.

The main components of the SG500 series are the main poles and arc chambers. The main pole has two hinged sides which are connected by a pair of separate, isolated plates. These plates are made of high-tolerance glass, suitable for prolonged use under different environmental stresses. They are also designed to withstand corrosion from various chemical vapors. The arc chambers are formed by a pair of metal plates which are connected by a solid-state insulator material. The metal plates are designed to be self-cleaning and offer both high surge survival and protection against communications interference.

When an over-voltage event occurs, the SG500 series begins to conduct current away from the vulnerable areas, allowing the equipment to remain operational. The high-tolerance glass plates are designed to allow the current to flow away from the equipment, while the solid-state insulator material of the arc chambers ensure that the current is effectively recirculated back into the system. The self-cleaning metal plates also offer superior performance, as they are constantly making small adjustments to their positions, allowing the current to dissipate more efficiently.

In addition to providing excellent protection against over-voltage events, the SG500 series also works as an efficient means of reducing power consumption in the equipment. This is achieved through the use of passive components, which are designed to convert the AC current into DC current, eliminating the need for additional active components, such as transformers and inductors. The passive components also ensure that the voltage is more effectively regulated, thus further reducing power consumption.

Finally, the SG500 series is also designed to provide superior EMC (Electromagnetic Compatibility) protection. This is done through the use of special components, which are designed to reduce the amount of interference generated by the equipment. The EMC protection offered by the SG500 series is further enhanced by the use of special ground contacts, which are designed to effectively interrupt any ground loops that may occur during normal operation.

Overall, the SG500 series of GDTs is an excellent choice for protecting electrical systems from both external and internal over-voltage. Offering a variety of mechanisms for protection, the SG500 series is designed to provide superior protection against over-voltage events, while also reducing power consumption through the use of passive components. In addition, the SG500 series provides superior EMC protection for the equipment, thereby ensuring that the equipment can be used in even the most demanding of environments.