INTRODUCTION
Medium Voltage Power Cables NF C 33-226 are the new generation of cables for public medium voltage distribution. Used for direct installation on the ground, outdoors, indoors and in cable ducts.
CONSTRUCTION
• Conductor: Aluminium or copper, class 2,circular compacted conductors
• Conductor screen: Non-metallic,semi-conducting compound
• Insulation: Cross-linked polyethylene(XLPE)
• Insulation screen: Non-metallic,semi-conducting compound,extruded strippable grooved elastomer
• Longitudinal water blocking: Swelling powder
• Metallic screen: Aluminium plastic tape (AL/PET)
• Outer sheath: Polyethylene (PE)
The cable is made of 1 or 3 bunched cores.
CHARACTERISTICS
• Maximum conductor temperature in normal operation:90˚C.
• Short circuit temperature (5 seconds maximum duration): Shall not exceed 250˚C.
• Ambient installation temperature, range: -10 ~ +50˚C.
• UV resistance: AN3
• Flame retardant: C2, NF C 32-070
• Water proof: AD8
• Mechanical resistance to impacts: AG4
• Minimum bending radius: During installation: 25D. After installation: 15D.
Note: D is overall diameter of cable.
INTERNATIONAL STANDARD
- IEC 60228 Conductors of insulated cables
- NF C 33-226 Cables isolés et leurs accessoires pour réseaux d’énergie Câbles de tensions assignées comprises entre 6/10(12) kV et 18/30(36) kV, isolés au polyéthylène réticulé à gradient fixe, pour réseaux de distribution
- IEC 60502-2 Power cables with extruded insulation and their accessories for rated voltages from 1kV (Um=1.2kV) up to 30kV (Um=36kV) – Part 2: Cables for rated voltages of 6kV (Um=7.2kV) and 30kV (Um=36kV)
