How lightning arrester and SPD works. OBO Bettermann….

Описание: Lightning arresters and Surge Protection Devices (SPDs) are essential components in electrical systems for protecting buildings and electronic equipment from transient overvoltages, especially from lightning strikes or switching events. OBO Bettermann is a well-known German manufacturer that offers a range of these protective devices.

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⚡️ How Lightning Arresters and SPDs Work

1. Lightning Arrester
• Function: Primarily used to protect buildings and overhead lines by diverting high-voltage surges (from lightning) safely to the ground.
• Working Principle: When lightning induces a high voltage in the system, the arrester provides a low-resistance path to ground, bypassing the equipment.
• Installation Location: Usually installed at the entry point of power or communication lines into the structure.

2. SPD (Surge Protection Device)
• Function: Protects electrical and electronic equipment from transient overvoltages (surges) that can damage or degrade components.
• Working Principle: SPDs monitor voltage levels and divert excess voltage to the earth when a threshold is exceeded.
• Types (based on IEC 61643-11 standard):
• Type 1 SPD: For direct lightning strikes; typically used in conjunction with lightning protection systems.
• Type 2 SPD: For indirect lightning strikes and switching overvoltages; common in distribution boards.
• Type 3 SPD: For sensitive electronics; installed near end equipment.