NA2XS(F)2Yy

General information

Standard: IEC 62067 The Russian analogue: APvPug Used for stationary cabling in the ground and trenches, regardless of the degree of soil and water corrosiveness. The cable sealing allows it to be used on the ground with high humidity and in partially submerged installations, while observing safety rules and providing protection against mechanical damage. These types of cables can be used in cable lines (under the condition of using a shell that meets the requirements of fire safety). It is allowed to install these types of cables on complicated cable routes. Cables can be installed without restrictions on the level difference.

XLPE insulated high-voltage cable with an aluminum conductor, a water-blocking semi-conductive tape and polyethylene (PE) sheath of increased density

Structure:

  1. The conductor is aluminium (A), multi-wire, round and compacted; corresponds to class 2 of IEC 60228
  • The cross-section of a multi-wire compacted round conductor is 400÷1000 mm2
  • The cross-section of a multi-wire compacted round conductor, consisting of 5 sectors, is 1000÷2500 mm2
  1. The conductor screen is made of extruded semiconducting cross-linked polyethylene
    3. The insulation is cross-linked polyethylene (2X)
    4. The insulation screen is made of extruded semiconducting cross-linked polyethylene
    5. The separation layer is made of semi-conductive water-blocking tape
    6. The screen is of copper wires fastened with copper tape (S)

Minimum cross-section of screen for cables with a conductor cross-section of 400-800 mm2 is 95 mm2
Minimum cross-section of screen for cables with a conductor cross-section of 1000 mm2 and above is 120 mm2

The maximum cross-section of screen can be set based on the customer's require.

  1. The separation layer is made of a semi-conductive water-blocking tape (F)
    8.The outer protective sheath is made of compacted polyethylene (2Yy)

Specifications:

  • Operating temperature of the conductor: +90 0C
  • The maximum heating temperature of cable conductors in case of emergency: +130 0C
  • The maximum heating temperature of cable conductors in case of a short circuit: +250 0С
  • The duration of a short circuit (not more than): 5 seconds
  • Cable laying temperature (not less than) / -15 0С
  • Ambient temperature: -60 / +50 0C
  • Minimum bending radius of the cable: 15xD (D is outer diameter of the cable)

NOTE: Technical specifications are given in Table 2.