A.Q.M. Co.,Ltd. – Raychem / TE

Medium Voltage (MV) Termination Heat Shrinkable for XLPE cable 7.2 kV up to 36 kV. EPKT-R & APKT


Termination Definition as per IEC 60502-4

  • Termination: device fitted to the end of a cable to ensure electrical connection with other parts of the system and to maintain the insulation up to the point of connection.
  • Indoor termination: termination intended for use where it is not exposed to either Solar radiation or weathering
  • Outdoor termination: termination intended for use where it is exposed to either solar Radiation or weathering or both

General Design Parameters Termination

  • Cable lug:
    • Lug to meet relevant specification IEC 61238, ANSI C119.4
  • Stress grading: 
    • axial and radial stress
      • <= max. E-stress of the cable 
      • <= break-down stress in air
  • Flash distance (mm): 
    • in accordance with national / international standards i.e. IEC 60071-X
  • Creepage distance (kV/mm):
    •  in accordance to pollution levels defined in guide IEC 60815
  • Environment:
    • Track & erosion resistant material i. e. ASTM D2703
    • Low leakage current under humidity

Uncontrolled Electrical field at Screen End

Impedance Stress Control

Stress control tube installed, the Equip Potential lines are spread out, distributing the electrical field and reducing the electrical stress to the cable insulation’s operating level and along the end of the cable. In other words, the voltage drop per centimeter is well below the value breakdown in air. This is achieved by the unique resistive and capacitive properties of the Heat-Shrinkable material.

Characteristic of Voltage along the Cable Substrate

EPKT-R & APKT Family

Termination Functional Element 1C EPKT-R 

Skirt with Voltage (kV)  for 1C

Skirt with Voltage (kV)  for 3C

Solderless Earth Connection for Metal Tape Shielded 1C

Solderless Earth Connection for Metal Tape Shielded 3C

Application Outdoor on Riser-Pole

Application Outdoor on Bushing Transformer (TR)

Application Indoor in the Switchgear (SWG)

Application Indoor Bushing Transformer Box

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