Substation Lightning Arrester

As the professional manufacturer of surge arrester, Volcano Electrical has been supplying to power utilities, electrified railways and railbound vehicles both at home and abroad. We are the top ranked exporter of surge arrester in China and our surge arrester is widely in reliable service on electric locomotives and high speed EMU trains.

The role of lightning arrester

The lightning arrester is connected between the cable and the ground, usually in parallel with the protected equipment. The lightning arrester can effectively protect the communication equipment. Once an abnormal voltage occurs, the arrester will act and play a protective role. When the communication cable or equipment is running under the normal working voltage, the arrester will not have any effect, and it is regarded as open circuit to the ground. Once high voltage occurs and the insulation of the protected equipment is endangered, the arrester will act immediately to direct the high-voltage impulse current to the ground, thereby limiting the voltage amplitude and protecting the insulation of communication cables and equipment. When the overvoltage disappears, the arrester quickly returns to its original state, allowing the communication line to work normally.

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