2.1 Arrester designGenerally, a MO

2.1 Arrester design
Generally, a MO surge arrester is made up of two parts:
the active part consisting of one or more piled up
MO resistors and an insulating housing, which guarantees
both the insulation and the mechanical strength.
Fundamentally, there are three different possibilities
of construction [2]:
• In a glass-fiber reinforced tube made of synthetic material,
which is covered with an insulating material, the active part
is installed, similar to the insulators made of porcelain.
These so-called hollow insulators have the same disadvantages as the porcelain insulators: they need a sealing
and pressure relief system and they can have internal
partial discharges.
• The active part is wrapped with glass-fiber material and
is soaked with resin, which turns the whole into a rigid
body. The insulating polymeric housing is then slipped over
the resin block or shrunk on it. This construction has
the disadvantage that it forcibly breaks apart when the
MO blocks are overloaded. Another disadvantage is the
fact that there are different insulating materials, which also
means that there are more boundary layers. Therefore,
it is necessary to take special measures for sealing.
• The active part is held mechanically together with glassfiber reinforced loops or bands. The synthetic material
(such as silicone) is directly molded on to the MO resistors.
This direct molding has the advantage that no gas volume
remains in the arrester. Sealing problems and inner partial
discharges are thus out of the question. There are no interfaces among the polymeric materials in which humidity
can penetrate. The danger of an explosion or a shattering
of the housing is very small.

Kết quả (Việt) 1:

2.1 Arrester designGenerally, a MO surge arrester is made up of two parts:the active part consisting of one or more piled upMO resistors and an insulating housing, which guaranteesboth the insulation and the mechanical strength.Fundamentally, there are three different possibilitiesof construction [2]:• In a glass-fiber reinforced tube made of synthetic material,which is covered with an insulating material, the active partis installed, similar to the insulators made of porcelain.These so-called hollow insulators have the same disadvantages as the porcelain insulators: they need a sealingand pressure relief system and they can have internalpartial discharges.• The active part is wrapped with glass-fiber material andis soaked with resin, which turns the whole into a rigidbody. The insulating polymeric housing is then slipped overthe resin block or shrunk on it. This construction hasthe disadvantage that it forcibly breaks apart when theMO blocks are overloaded. Another disadvantage is thefact that there are different insulating materials, which alsomeans that there are more boundary layers. Therefore,it is necessary to take special measures for sealing.• The active part is held mechanically together with glassfiber reinforced loops or bands. The synthetic material(such as silicone) is directly molded on to the MO resistors.This direct molding has the advantage that no gas volumevẫn còn trong hộp chống sét. Vấn đề và phần bên trongthải như vậy ra câu hỏi. Không có không có giao diện giữa các vật liệu polymer có độ ẩmcó thể xâm nhập. Sự nguy hiểm của một vụ nổ hoặc một shatteringnhà ở là rất nhỏ.