Uninterruptible Power Supply System
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6 FAQs about Uninterruptible power supply and lightning protection for South Ossetia communication base station
How to protect power dispatch automation systems from lightning strikes?
Adding surge resistors between power lines and steel pipes outdoors can enhance lightning protection. To prevent damage from lightning strikes to power dispatch automation systems, a policy of “comprehensive defense, integrated management, multiple protections” should be adopted.
How to protect power supplies from lightning?
For power supplies, a reliable and effective method of lightning protection is adopting three levels of protection using corresponding surge arresters at each level so that the clamping voltage output meets specified requirements.
How should a lightning protection System (RBS) be formed?
The earthing network of an RBS should be formed by a ring loop surrounding the tower, equipment room and fence, at a minimum. The mean radius re of this ring loop should be not less than l1, as indicated in Figure 1 and this value depends on the lightning protection system (LPS) class and on the soil resistivity.
How important is the earthing resistance of an RBS?
The earthing resistance of an RBS is not very important, but an RBS with a low earthing resistance minimizes the surge current that goes outwards from the RBS through the metallic services connections (such as power lines and telecommunication lines with metallic elements), when lightning strikes the tower.
How to protect against lightning electromagnetic pulses?
Lightning is a common source of strong electromagnetic interference in the atmosphere. In order to better defend against lightning electromagnetic pulses, not only should the location of computer rooms be correctly selected but also effective measures such as equipotential connection, shielding, and overvoltage protection should be taken.
How do lightning flashes act on low-voltage power supply systems?
Lightning flashes may act on low-voltage power supply systems through two pathways: (1)Direct lightning strike: Lightning discharge directly hits components of the power system, injecting a large pulse current.
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