Clear Zinc Oxide Powder
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Clear Zinc Oxide Powder

Utilize the non-linear characteristics of clear zinc oxide powder to play the role of leakage and breaking to make zinc oxide lightning arrester, so that the current flowing through the arrester at normal working voltage is very small (microamp or milliampere level); when overvoltage is applied , The resistance drops sharply, and the energy of the overvoltage is discharged to achieve the protection effect.

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Product Description

Clear zinc oxide powder

Utilize the non-linear characteristics of clear zinc oxide powderto play the role of leakage and breaking to make zinc oxide lightning arrester, so that the current flowing through the arrester at normal working voltage is very small (microamp or milliampere level); when overvoltage is applied , The resistance drops sharply, and the energy of the overvoltage is discharged to achieve the protection effect.

 

 

Product name

Zinc oxide  

Molecular formula

ZnO

CAS NO

1314-13-2

EINECS NO

215-222-5

Density

5.606g/cm3

Molecular weight

81.38

Melting point

1975℃

Boiling Point:

2360ºC

Purity

0.99

Active substance content

0.997

H.S CODE

2817001000

Appearance

White powder or crystal

 

Characteristics of zinc oxide arrester made of clear zinc oxide powder:

*The current capacity of the zinc oxide arrester made of clear zinc oxide powder:This is mainly reflected in the ability of the arrester to absorb various lightning overvoltages, power frequency transient overvoltages, and operating overvoltages.

*Protective characteristics of zinc oxide arresters made of clear zinc oxide powder: Zinc oxide arresters are electrical products used to protect various electrical equipment in the power system from overvoltage damage and have good protection properties. Because the non-linear volt-ampere characteristic of the zinc oxide valve plate is very good, so that only a few hundred microampere current can pass under the normal working voltage, it is easy to design a gapless structure, so that it has good protection performance, light weight and small size. Feature

*Sealing performance of zinc oxide arrester made of clear zinc oxide powder: The arrester element adopts a high-quality composite jacket with good aging performance and good airtightness, and measures such as controlling the compression of the sealing ring and adding sealant. The ceramic jacket is used as the sealing material to ensure reliable sealing , So that the performance of the arrester is stable.

*The mechanical properties of the zinc oxide arrester made of clear zinc oxide powder: mainly consider the following three factors: the seismic force it bears; the maximum wind pressure acting on the arrester; the top end of the arrester bears the maximum allowable pulling force of the wire.

*Decontamination performance of zinc oxide surge arresters made of clear zinc oxide powder: Zinc oxide surge arresters without gaps have high contamination resistance.

*The zinc oxide arrester made of clear zinc oxide powder has high operational reliability: the reliability of long-term operation depends on the quality of the product and whether the product selection is reasonable. The quality of its products is mainly affected by the following three aspects: the rationality of the overall structure of the arrester; the volt-ampere characteristics and aging resistance characteristics of the zinc oxide valve plate; the sealing performance of the arrester.

*Power frequency withstand capability of zinc oxide arresters made of clear zinc oxide powder: due to various reasons such as single-phase grounding, long-line capacitance effects, and load rejection in the power system, the power frequency voltage will rise or the temporary Over voltage, the arrester has the ability to withstand a certain power frequency voltage rise within a certain period of time.


Item


Zinc oxide(Zn0 calculating as dry materia)% ≥

99.7

Potassium oxide(K)%≤

0.001

Sodium oxide(K)%≤

0.001

Ferric oxide (Fe)%≤

0.002

Cadmium oxide (Cd)%≤

0.001

Lead oxide(Pb)%≤

0.005

Copper oxide(Cu)%≤

0.0002

Metal content(as Zn)% ≤

NONE

moisture%

0.3

Insoluble Matter in Hci %  ≤

0.004

Loss on ignition % ≤

0.2

PH

7.0-8.0

The average particle size(D50)um ≤

0.5

Residue on sieve (44um)% ≤

0.1


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