Which device is commonly used to protect networks in electrical systems?

The network protector is specifically designed to enhance the protection of electrical networks, particularly in systems like utility grids and industrial setups. Its primary function is to prevent reverse power flow while allowing normal operation under varying load conditions. This device operates automatically and plays a critical role in isolating faults and maintaining service continuity, ensuring that the network does not experience disturbances that could lead to outages or damage.

Transformers, on the other hand, are primarily used for voltage conversion and transmission rather than network protection. While they can support network stability, they do not actively manage or mitigate faults. Switchgear is an assembly of electrical devices that facilitates the control and protection of electrical circuits, but it is not specifically tailored for network protection in the same way that a network protector is. Relays serve as protective devices that detect faults and can initiate circuit interruptions, but they are generally components within broader protection schemes rather than standalone solutions for network protection.

Therefore, the network protector is uniquely suited to provide the necessary safeguards for electrical networks, ensuring efficient and reliable operation.