Polymer-Lightnin G-Arrestor
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| Specification | Details |
|---|---|
| Type | Polymer (Polymeric Housed) Lightning Arrester |
| Application | Used for protection of power distribution transformers, lines, and equipment from lightning and switching surges |
| System Voltage | 11 kV / 22 kV / 33 kV (3 Phase, 50 Hz) |
| Rated Voltage (Ur) | 12 kV for 11kV system; 24 kV for 22kV system; 36 kV for 33kV system |
| Nominal Discharge Current | 5 kA / 10 kA (8/20 µs waveform) |
| Mounting Type | Pole or structure mounted (horizontal/vertical) |
| Housing Material | Silicon rubber polymer housing (UV and weather resistant) |
| Design Type | Gapless, metal oxide (ZnO) varistor type |
| Standard Compliance | IEC 60099-4, IS: 3070 (Part 3) |
| Frequency | 50 Hz |
| Installation | Outdoor installation for overhead or substation systems |
| Specification | Typical Ratings |
|---|---|
| Continuous Operating Voltage (Uc) | 9 kV / 18 kV / 27 kV (as per system voltage) |
| Rated Voltage (Ur) | 12 kV / 24 kV / 36 kV |
| Nominal Discharge Current (In) | 10 kA (8/20 µs impulse current) |
| High Current Impulse Withstand | 65 kA (4/10 µs) |
| Power Frequency Withstand Voltage | 28 kV (for 11kV system) |
| Lightning Impulse Withstand Voltage | 75 kV – 170 kV peak (depending on rating) |
| Leakage Current | < 50 µA under continuous voltage |
| Protection Level (Up) | ≤ 2.5 × Uc |
| Energy Absorption Capability | 1.5 – 4 kJ/kV (Ur) |
| Creepage Distance | ≥ 25 mm/kV (as per pollution class) |
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