Armored Power Cable
Introduction
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.
Features
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: 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.
Bedding: Polyvinyl
chloride (PVC) bedding is used to provide a protective boundary
between inner and outer layers of the cable.
Armor: 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.
