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Nothing can protect equipment from a direct lightning hit, the powers involved are so great.
Most of the damage caused by lightning is, however, caused by surges induced in wiring by a nearby lightning discharge. Even sheet lightning between clouds, which accounts for more than half of all lightning discharges, can generate electromagnetic fields strong enough to induce voltages of many thousands of volts in cables. The OxyGuard Lightning Protection Unit is designed to protect OxyGuard multichannel central units from damage should such voltages occur in the probe leads. Individual probe cables are connected to the OxyGuard LPU, which is then connected to the central unit with a multi-core cable. The OxyGuard LPU must be connected to an effective earth connection, which should also be used to earth the OxyGuard unit.