A2XSYT A2XS2YT   6/10, 12/20, 20/35 kV - Aerial bundled medium voltage power cables with PE (SY) and PVC (S2Y) sheath

A2XSYT A2XS2YT   6/10, 12/20, 20/35 kV - Aerial bundled cables with PE and PVC sheath - Construction

Conductor : round, stranded and compacted alum., class 2. 

Inner semi-conductive layer : XLPE compound.

 Insulation : XLPE type XI 1.

Outer semi-conductive layer : XLPE comp. around insulation. 

Wrapping : layer of semi-conductive tape helically wrapped.

 Metal screen : CU wires conc. laid and one contact of CU tape.

Optional metal screen : one or more overlapping CU tapes.

 PE sheath (A2XSYT) : PE compound.

PVC sheath (A2XS2YT) : PVC compound.

Messenger (for 10, 20 kV) : galvanized steel messenger 50 mm².

Messenger (for 35 kV) : galvanized steel messenger 70 mm².

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A2XSYT A2XS2YT   6/10, 12/20, 20/35 kV - Aerial bundled medium voltage power cables with PE (SY) and PVC (S2Y) sheath - Technical data and tests

Operating voltage : 6/10; 12/20; 20/35 kV. 

Test voltage = 2.5Uo (HD.620.S2),

  AC (50Hz) - 5 min : 6/10 kV = 15 kV;  12/20 kV = 30 kV;  20/35 kV = 50 kV.

 Highest system voltage, Umax : 6/10 kV = max. 12 kV;  12/20 kV = max. 24 kV;  20/35 kV = max. 40 kV.

Conductor resistance at 20o C : according to EN 60228 class 2. 

Core temperature, max : 90° C in continuous operation. 

Max. short circuit temperature : 250° C , not more than 5 sec.

 Overload temperature : 130° C / 100h per year max.

Laying temperature : no less than -5° C

 Level of partial discharge : no more than 2pC. 

Bending radius, min : 15 x D. 

Dielectric factor of losses, 50 Hz : at 20°C, (0.8-3)x10-4. 

Spec.volume insulation resistance : at 20°C, min 10¹⁵ Ω x cm. 

Intensity of electric field : max. 6.9-5.3 kV/mm. 

Max. tensile force during laying : for Cu conductors - 50 N/mm². 

for Al conductors - 30 N/mm².

 Breaking load of messenger, min : for 50 mm2 = 60 kN.  for 70 mm² = 82 kN. 

Modulus of elasticity of messenger : 175 kN/mm² .

Packing length on wooden drums : min. 200 m.

A2XSYT A2XS2YT   6/10, 12/20, 20/35 kV - Aerial bundled medium voltage power cables with PE (SY) and PVC (S2Y) sheath - Available constructions

 Single Al core : 1x(25 - 150)mm² 

Standard cross section of metallic

  screen for conductor sizes :

 from 25 mm² to 120 mm² : 16mm²; 

from 150 mm² to 300 mm² : 25mm²;

 from 400 mm² to 630 mm² : 35mm².

A2XSYT A2XS2YT   6/10, 12/20, 20/35 kV - Aerial bundled medium voltage power cables with PE (SY) and PVC (S2Y) sheath - Standards

Cable : HD 620.S2, IEC 60502-2, SRPS N.C5.231. 

Messenger : HD 620.S2. 

Conductors : EN 60228. 

Conductor shape : RM - class 2 conductor acc. to IEC 60228 and VDE 0295.

A2XSYT A2XS2YT   6/10, 12/20, 20/35 kV - Aerial bundled medium voltage power cables with PE (SY) and PVC (S2Y) sheath - Applications

These cables are suitable for medium voltage power distribution in distribution networks (6/10(12);12/20(24) kV).

They may be put on the overhead lines in old and residential areas.

Provides a shortcut to electrification without affecting the townscape and its environs.

These cables can be strung safely on the same poles with low-voltage and telecommunication cables.

A2XSYT A2XS2YT   6/10, 12/20, 20/35 kV - Aerial bundled medium voltage power cables with PE (SY) and PVC (S2Y) sheath

A2XSYT A2XS2YT 6/10, 12/20, 20/35 kV - Aerial bundled medium voltage power cables with PE (SY) and PVC (S2Y) sheath

A2XSYT A2XS2YT   6/10, 12/20, 20/35 kV - Aerial bundled medium voltage power cables with PE (SY) and PVC (S2Y) sheath