About Lightning Arrester

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A lightning arrester is a protective device installed in electrical systems to divert dangerous overvoltages safely to the ground. By providing a low-resistance path during surges, it prevents costly damage and ensures uninterrupted power supply.

In normal conditions, the arrester acts as an insulator, allowing electricity to flow smoothly. When a surge occurs, it instantly becomes conductive, channeling the excess energy into the ground, and then returns to its insulating state once the surge passes.

Specifications

• Type: Metal Oxide Surge Arrester (Gapless / ZnO)
• Application: Outdoor, Distribution & Transmission Systems
• Standards: IEC 60099-4 / IS 3070
• System Voltage Range: 3.3 kV to 420 kV (as per requirement)
• Housing: Polymer / Porcelain
• Design: Sealed, UV & weather resistant
• Mounting: Vertical / Horizontal
• Terminal Connection: Clamp / Stud / Customized
• Ambient Temperature: –40°C to +55°C
• Altitude: Up to 1000 m (higher on request)
• Pollution Class: Medium / Heavy / Very Heavy as per IEC 60815
• Seismic Withstand: Up to 0.3 g
• Continuous Operating Voltage (Uc): ___ kV (line to ground)
• Nominal Discharge Current (In): 5 kA / 10 kA / 20 kA
• Lightning Impulse Withstand (Up): ___ kV peak
• Creepage Distance: As per pollution level (e.g., 25 mm/kV – 31 mm/kV)