D62 Metal Oxide Varistor for Surge Arrester

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Product Name:

D62 Metal Oxide Varistor for Surge Arrester

Model NO.:

D62

Type:

Varistor

Installation:

DIP Resistor

Package Type:

Surface Mount

Technology:

Metal Oxide

Trademark:

YONG'DE

Transport Package:

Carton

Origin:

Zhejiang, China (Mainland)

HS Code:

85353000

Product Details

Product About

Key Specification/special feature

Brand: YONGDE

Type:D62H22.5

Material: Zinc oxide

Demensions: diameter 62 mm , height 22.5mm

D.C reference voltage: 5.35±0.25 KV

Leakage current at 0.75 time D.C reference voltage: <50μA

Rated voltage: 3.75±0.2KV

Continuous operating current: 3KV

Long durationg(2ms rectangular) current impulse withstand:850A

4/10μs high current impulse withstand:100KA

Residual voltage at nominal disscharge current:

8.05±0.1KV/5KA

8.9±0.1KV/10KA

9.7±0.1KV/20KA

10.6±0.1KV/40KA

Accelerating aging coefficicent:<1.0

Description:
Zinc oxide varistor is the core of the arrester,which main component is Zinc Oxide and with a small quantity of bismuth oxide, fluoride oxide, manganous carbonate, antimony oxide and other gleam of additive and made with high temperature.

Metal oxide Varistors microsturcture mainly constitute of Zinc Oxide grain, grain boundary layer and chienship phase. And its electric conduction principle lies that Zinc Oxide grain has good electro conductibility, and the voltage to the Zinc Oxide is almost act on high resistant grain boundary layer. Varistors nonlinearity mainly comes from grain boundary layer(the main ingredient is bismuth oxide) chienship phase scattered throughout the grain boundary layer which is the multiple oxide of Zinc Oxide and bismuth oxide. Its function lies in restraining the growing of Zinc Oxide grain to make the better nonlinearity.

Features:
large 2000μs rectangular impulse absorption capacity
Large 4/10μs high current impulse withstand

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