The Key Protection for Electrical Safety

Lightning Arrester：Lightning arresters play a vital role in electrical systems.

In terms of principle, they mainly limit over - voltage. When lightning or instantaneous over - voltage occurs within the system, non - linear resistance elements such as zinc oxide varistors in the lightning arrester come into play. Under normal voltage, the lightning arrester is in a high - resistance state and has no impact on the system; when the voltage exceeds the standard, it quickly becomes a low - resistance path, guiding the over - voltage current into the ground to protect electrical equipment from damage.

The emergence of lightning arresters is to cope with multiple threats. Lightning is a huge threat. Every year, a large number of lightning strikes power facilities, and the high voltage generated may damage electrical equipment and cause power outage accidents, affecting production and life. At the same time, over - voltage generated by internal operations or failures of the system will also damage the insulation of equipment and shorten the service life of equipment.

The development of lightning arresters has gone through the process from gap - discharge type to silicon carbide type and then to zinc oxide type. Zinc oxide lightning arresters have excellent performance. Nowadays, their development is towards better performance, more reliable protection and intelligent monitoring.

In terms of application, lightning arresters are installed on transmission line towers and in substations in the power transmission field to ensure the safe transmission of electrical energy and the safety of substations. In the communication field, lightning arresters protect base station and communication line equipment to maintain normal communication. In the industrial field, it can prevent over - voltage from damaging electrical and production equipment in factories and reduce losses. In short, lightning arresters are key equipment for ensuring electrical safety.