Why Zinc Oxide lighting arrester is popular?

The Zinc Oxide lighting arrester are used for protection of electrical equipment from all kind of over-voltages caused by lightening or switching operations.

(Zinc Oxide lighting arrester line using)

Surge arresters the most advanced over-voltage protector in the world,  made of metal-oxide (MO) resistors without spark gaps directly molded in silicone housing, in gray color or red color, and designed and tested according to IEC 60099-4 and IEC 62848-1.

Zinc Oxide lighting arrester interior structure

Chose the workable resistors according requirement

Compared with the conventional silicon carbide arrester, this presciption of the product improves greatly the volt-Ampere characteristics of the resistor disc and increased through-current capability at over-voltage so as to during a radical changes for the characteristics of the arresters. Under the circumstance of normal operating voltage, the current through the arrester is just on microampere degree, When suffered from over-voltage, the arrester’s excellent nonlinear characteristics will make the current through the arrester increase to several thousand ampere, while the arrester will be under the circulating state and release over-voltage energy so as to protecting the power transmission equipment against the damage caused by the over-voltage.

Product characteristic

1.Small size,Light weight,resistance to impact,no collision damage during transportation,flexible installation,suitable for use in the switch cabin.

2.Special structure,the overall compression molding,no air gap,good sealing performance,moisture-proof and explosion-proof

3.Large creepage distance,good hydrophobicity ,strong stain resistance,stable performance and reduce operation maintenance.

4.Unique formula of zinc oxide  resistors, small leakage current,slow aging,long service life.

5.With DC reference voltage,rectangular flow capacity and high current and large current withstand capacity are higher than standard requirement.

Applications

Surge arresters for medium-voltage systems

Protection of equipment from power electronics to high energy capacitors, arc furnace transformers and other

Surge arresters for special applications in low-voltage systems

Surge arresters for AC traction systems

Surge arresters for DC traction systems

Voltage limiting devices for traction systems

Usual Service Condition

Power frequency:48Hz ~60Hz

Ambient temperature:-40°C~+40°C

Maximum wind speed: not exceed 35m/s

Altitude: not exceed 2000m

Earthquake intensity: not exceed 8 degrees

Ice thickness: not exceed 10 meters.

Long-term applying voltage does not exceed the maximum coutinuous operating voltage.

 Arrester accessories

Arrestors can be selected according to the requirements of the accessories: Arrester cap, Disconnector, Copper line, Bracket and so on

Different accessories, different functions, can be used together, can be installed separately. But different specifications of arresters, use different specifications of accessories.

Main arrester accessories

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