Simplified Analysis Of Lightning Arresters Installed In Indoor Electrical Systems

For indoor electrical equipment, the configuration of 33 kv lighting arrester typically does not involve the complex handling of direct external lightning strike paths. For locations such as distribution cabinets, control panels, or low-voltage equipment rooms within buildings, overvoltage sources mainly originate from indirect factors such as grid switching or long-distance lightning induction. The energy level of these overvoltage events is significantly lower than the transient impact caused by direct lightning strikes.

In indoor scenarios, the selection and configuration location of 33 kv lightning arrester often depends on the structure of the existing power distribution network. Low-voltage surge arresters (SPDs) are generally designed to be installed close to the power inlet or distribution board, which reduces the conductor length from the switchgear to the equipment, thus minimizing the overvoltage propagation path.

Compared to outdoor lightning protection facilities, indoor 33 kv lighting arrester does not need to cope with environmental variables such as direct high-altitude lightning strikes and wind and rain erosion; therefore, physical installation and grounding treatment are more straightforward. For electrical equipment within buildings, 33kv lightning arrester price connecting to the power distribution system grounding point or the equipment room grounding network is sufficient to meet the specifications. This reduces reliance on the on-site external grounding system and facilitates coordination between the construction unit and the layout of distribution cabinets and control panels during installation.