What is the primary function of an SF6 trailer?

The primary function of an SF6 trailer is to evacuate, purify, and store sulfur hexafluoride (SF6) gas. SF6 is commonly used in high-voltage electrical equipment because of its excellent insulating and arc-extinguishing properties. The trailer is equipped with specialized equipment that allows for the safe handling of this gas, which includes processes for removing impurities and maintaining the gas at appropriate pressure and temperature levels for reuse in circuit breakers and other equipment.

In substations, maintaining high-quality SF6 is crucial because contaminated or degraded gas can negatively affect the performance and reliability of electrical systems. Therefore, the trailer serves a vital role in ensuring that the SF6 used in these systems is of high purity, thus guaranteeing safe and efficient operation.

Transporting hazardous materials, disposing of electrical equipment, or operating high-voltage breakers do not correctly describe the specific capabilities and design of the SF6 trailer, as its purpose is strictly related to the management of SF6 gas itself rather than these other operations.