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YH5WZ High Quality Zinc Oxide Composite Polymer Surge Arrester for Power Station

 
The lightning arrester is the basis for insulation coordination of various electrical equipment (such as transformer, reactor, capacitor, generator, motor, PT, CT, circuit breaker, contactor, etc.) in the power system. The internal and external insulation indexes (short-time power frequency withstand voltage, lightning impulse withstand voltage, operation impulse withstand voltage, etc.) of all electrical equipment in the power system are determined by the protection performance of the lightning arrester.
 
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  • YH5WZ

  • DGG

Lightning arrester, also known as surge protector, is a crucial device in protecting electrical systems from the damaging effects of lightning strikes. This device has several advantages that make it an essential component in any electrical system.


1. Firstly, surge arresters,Lightning arrester, help to divert the excess voltage caused by lightning strikes away from sensitive equipment, preventing damage and ensuring the safety of the system.

2. Secondly, Lightning arrester,surge arresters are cost-effective solutions that can save businesses and homeowners from costly repairs and replacements of equipment.


3.Additionally, lightning arresters surge arresters are easy to install and require minimal maintenance, making them a convenient choice for both residential and commercial applications


3. .Furthermore,  lightning arresters surge arresters devices are highly reliable and can provide continuous protection against lightning strikes, giving users peace of mind during thunderstorms.

4. Lastly, lightning arresters surge arresters  are environmentally friendly, as they help to reduce the carbon footprint by preventing the need for frequent replacements of equipment.



Description

Unit

Technical Parameter

Place of use


Power station type

System's Standard Voltage,effective value

kV

35

Model No.


YH5WZ-51/134

Lightning Arrester Rated Voltage,effective value

kV

51


No Gap Lightning

Arrester

Continuous Operating Voltage,effective value

kV

40.8

1mA DC reference voltage (not less than)


73

0.75 times DC reference voltage

μA

50


With Gap Lightning

Arrester

Power Frequency Discharge Voltage(kV)

kV


1.2/50 Impulse Discharge Voltage(kV)

kV


Maximum Contact Current

μA


Under 8/20 Lightning Impulse Current

kV

134

Under 30/60 Operating Impulse Current

kV

114

%Steep Wave Impulse Current

kV

154

2000 μs square wave current capacity

A

400

4/10 Big Current Withstand ability

kA

65


USAGE: ENVIRONMENTAL CONDITION

1. Ambient temperature: no higher than+40 ºC, no lower than - 40 ºC;

2. Altitude: no more than 3000m;

3. Power frequency: 50 ± 2Hz; 60±2Hz;

4. Maximum wind speed: 35m/s;

5. Cleaning-free conditions: areas with medium pollution and below;

6. For gapless products, the power frequency voltage applied for a long time shall not exceed the continuous operation

voltage of the arrester;

7. For products with gaps, the short-time power frequency voltage rise at the installation point shall not exceed the rated voltage of the arrester.

If the arrester is used for a long time under the following abnormal conditions, it shall be specially made, and it shall be stated when ordering:

1. The temperature or altitude exceeds the standard (such as plateau, tropical zone, cold zone, fully enclosed cabinet,

close to an electric furnace, etc.);

2. The use environment has serious moisture or corrosive gas impurities (such as water, salt fields, chemical plants, etc.);

3. Strong ultraviolet radiation (such as plateau, drought area with strong sunshine, etc.);

4. Extremely polluted areas (such as mine working face, construction site working face, etc.);


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