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Armored Power Cable Â
Introduction
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Steel Tape
Armored (STA) Cable could bear certain mechanical force, but
it could not bear great pulling force. It is suitable o be
laid underground. STA cable not only has excellent electric,
mechanical properties, but also has powerful resistance
against heat aging, environmental stress and chemical
corrosion. Its structure is simple and convenient to use and
can be laid with no restriction of different elevation. The
permissible maximum operating temperature is
*0℃. Steel tape armored cable (STA Cable) produced
by Gongyi
Cable Wire Co., Ltd can be produced according to
our company standard which is equivalent
IEC****2. Gongyi
Cable Wire Co., Ltd can design and manufacture
other Specification and armored type upon
request.
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Features
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Steel Wire Armored (SWA) Cable
commonly abbreviated as SWA cable, is a hard-wearing power
cable designed for the supply of mains electricity. It is one
of a number of armored electrical cables which include *1kV
Cable and *3kV Cable and is found in underground systems,
power networks and cable ducting. The typical construction of
an SWA cable can be broken down as follows:
Conductor:Â consists of plain stranded
copper (cables are classified to indicate the degree of
flexibility. Class 2 refers to rigid stranded copper
conductors as stipulated by British Standard BS EN
****8:***5)
Insulation: Cross-linked polyethylene (XLPE) is used in a
number of power cables because it has good water resistance
and excellent electrical properties. Insulation in cables
ensures that conductors and other metal substances do not
come into contact with each other.
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Bedding:Â Polyvinyl
chloride (PVC) bedding is used to provide a protective
boundary between inner and outer layers of the
cable.
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Armor:Â Steel
wire armor provides mechanical protection, which means the
cable can withstand higher stresses, be buried directly and
used in external or underground projects. The armoring is
normally connected to earth and can sometimes be used as the
circuit protective conductor ("earth wire") for the equipment
supplied by cable.
Sheath: a black PVC sheath holds all components of the cable
together and provides additional protection from external
stresses.
The PVC version of SWA cable, described above, meets the
requirements of both British Standard BS***7 and
International Electrotechnical Commissionstandard IEC ****2.
It is known as SWA BS***7 Cable and it has a voltage rating
of **0/***0V. SWA cable can be referred to more generally as
mains cable, armored cable, power cable and booklet armored
cable. The name power cable, however, applies to a wide range
of cables including ***1Y, NYCY, NYY-J and ***1X
Cable.
