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12kV 5kA metal (zinc) oxide surge lightning arrestor without gap (KEMA)
12kV 5kA metal (zinc) oxide surge lightning arrestor without gap (KEMA)

1-Nearly 20 year's manufacturing&exporting experience 2-ISO9001 and KEMA certificates 3-IEC60099-4 standard

Metal-Oxide Surge Arrester

1. Series 1---Polymer housed Metal-Oxide Surge Arrester

2. Series 2-- Polymer housed Metal-Oxide Surge Arrester

3. Series 3---Porcelain Housed Metal- Oxide Surge Arrester

4. Series 4—Station Class Surge Arresters

Operating Principle

The metal oxide arrester provides the most advanced protection against over-voltage in the world, since MOA’s resistors are made up of Zinc Oxide films. MOA has good voltage-ampere characteristics as compared with silicon carbide arrester, it is Volt-Ampere characteristics is much superior and results in much better performance.

A micro ampere level current flows while MOA is operating under normal voltage, but the amount of the current will be thousands amperes when MOA is subjected to over-voltage, because of MOA has a good non-linear characteristics. Hence MOA provide excellent prection for the HV equipment, especially the transformers, cables and switchgear.

Application

The metal oxide arrester which applies to protect the power equipment like transformers against system overvoltages and lightning surges.

Service Conditions

Ambient Conditions: -40°C to 40°C

Height about sea level: ≤1000m

Power supply frequency: 48-62HZ

Earthquake intensity: Not exceed Richter 7.0 grade

Maximum wind velocity: ≤35m/s

The long-term power running voltage should not over the continuous operating voltage.

The altiplano or contaminated area should be indicated.

 

Series 1  Polymer Housed Metal-oxide Surge Arresters(KEMA)

 

Main Technical Data

 

Model (10KA)Rated Voltage(kV)MCOV (kV)Max. Residual Voltage(kV)2000 us Rectangular Current Withstand(A)4/10 us High Current ImpulseDomension (mm)No. of  ShedsCreepage distance (mm)
Steep Current Impulse 1/10usLightning Impulse  8/20usSwitching Current Impulse 30/60usAB
HDA1-10/664.820.71815.32501002501253210
HDA1-10/997.23127232501002801554280
HDA1-10/11118.837.93328.12501003101855350
HDA1-10/12129.641.53630.62501003101855351
HDA1-10/151512524538.32501003402156419
HDA1-10/181814.46254462501003702457487
HDA1-10/212116.872.56353.52501004002758555
HDA1-10/242419.282.57261.22501004303059622
HDA1-10/272721.693.2816925010046033510690
HDA1-10/303024103.59076.525010052039512760
HDA1-10/333326.4113.89984.225010055042513894
HDA1-10/363628.85124.210891.825010055042513894
Model (5KA)Rated Voltage(kV)MCOV (kV)Max. Residual Voltage(kV)2000 us Rectangular Current Withstand(A)4/10 us High Current ImpulseDomension (mm)No. of  ShedsCreepage distance (mm)
Steep Current Impulse 1/10usLightning Impulse  8/20usSwitching Current Impulse 30/60usAB
HDA1-5/664.820.71815.3150652501253210
HDA1-5/997.2312723150652801554280
HDA1-5/11118.837.93328.1150653101855350
HDA1-5/12129.641.53630.6150653101855351
HDA1-5/151512524538.3150653402156419
HDA1-5/181814.4625446150653702457487
HDA1-5/212116.872.56353.5150654002758555
HDA1-5/242419.282.57261.2150654303059622
HDA1-5/272721.693.281691506546033510690
HDA1-5/303024103.59076.51506552039512760
HDA1-5/333326.4113.89984.21506555042513894
HDA1-5/363628.85124.210891.81506555042513894

12kV 5kA metal (zinc) oxide surge lightning arrestor without gap (KEMA)

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