The WSP50/T1 surge protection device is configured in a 4+0 configuration (CT1 according to BS 7671), allowing for installation in TN-S and TN-C-S earthing systems. This configuration is not suitable for use with a TT earthing system.
This surge protection device is designed for use at the boundary of LPZ 0 to LPZ 1 in structures of LPL III and LPL IV (Class III and IV Lightning Protection Systems) as a Type 1 lightning arrester. The WSP50/T1 surge protection device is also Type 2 and Type 3 tested for use in sub-distribution boards and local equipment protection.
| Earth Type | Nominal Operating Voltage L to PE (Un) | Maximum Continuous Operating Voltage (Uc) | Maximum Discharge Current 8/20μs (Imax) | Total Discharge Current 10/350μs | Total Discharge Current 8/20μs | Nominal Discharge Current, Class II, 8/20μs (In) | Temporary Overvoltage, 5s (Ut) | Temporary Overvoltage, 120min (Ut) | Part Number | |
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Earth Electrode Systems
Lightning Protection Systems
Earthing Design Services
G78 Mobile Phone Base Stations