Active Member
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[China]
Address: 618, Goodbond Venture Base, No.18, Lu Yun Road, Yue Lu District, Changsha City, Hunan Province
Contact name:cody
Hunan Heou Engineering Consulting Co., Ltd |
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Lightning arrester, surge arrester.
(1) An electrical apparatus used to protect electrical equipment
from high transient overvoltage hazards and to limit the duration
and often the magnitude of the renewal current. The term includes
any external clearance necessary for the normal function of the
appliance when installed in operation, regardless of whether it is
a component of the whole.
Note 1: Lightning arresters are usually connected between the grid
conductors and the ground, however, they are sometimes connected
next to the electrical windings or between the conductors.
Note 2: Lightning arresters are sometimes called overvoltage
protectors, overvoltage limiters (surge divider)
(2) lightning arrester is another important device often used to prevent lightning damage to communication cables.
Definition
Lightning arrester: An electrical appliance used to protect
electrical equipment from high transient overvoltage hazards during
lightning strikes and to limit the duration of the renewal current,
and often also the renewal current amplitude. Lightning arrester is
sometimes also called overvoltage protector, overvoltage limiter.
As shown in Figure 1 is a lightning arrester.
Features and Principles
AC gapless metal oxide lightning arrester has excellent nonlinear
volt-ampere characteristics, good response characteristics, no
renewal current, large through-current capacity, low residual
voltage, strong overvoltage suppression capability, dirt
resistance, anti-aging, not subject to altitude constraints, simple
structure, no gap, tight sealing, long life, etc.
This arrester in the normal system working voltage, showing high
resistance state, only microampere current through. It presents low
resistance under the action of over-voltage high current, thus
limiting the residual voltage at both ends of the arrester
Normal service conditions:
1. The ambient temperature: -40°C ~+40°C 2. The altitude above sea level :not exceed 1000-2000m (the altiplano area should be indicated when order) 3. Earthquake intensity: not higher than 7 degrees; 4. Maximum wind velocity :less than 35m/s. 5. The filthy area should be given clear indication.
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Feature:
The zinc oxide surge arrester is the most advanced over-voltage protector in the world. Due to make the resistor disc of core component mainly adopt zinc oxide arrester. Compared with the conventional siliconcarbide arrester, this prescription of the product improves greatly the volt-ampere characteristics of the resistor disc and increase through- current capability at over-voltage so as to bring a rad local-changes for the characteristics of the arresters. |
Q: Can we get a sample for reference?
A: Yes, as long as the goods are conventional type, and you will be
charged sample cost plus related shipping cost. Once you place an
order to us, we can return or deduct the sample cost to you.
Q: How to solve the quality problems after sales?
A: Take photos of the quality problems and send to us for our
checking and confirming, we will make a satisfied solution for you
within 3 days.
Q: What is the lead time?
A: The lead time depends on the quantities ordered, generally
within 25-35days upon the receipt of advance payment.
