NEXANS EDR MAX NF C33-226 12/20(24)kV

Usage

NEXANS EDR MAX NF C33-226 Direct Buried cables are the new generation of cables for public power distribution network 12/20 kV. Re-enforced burying resistance (EDR) is ensured with an extruded polyethylene protection. They are flame retardant according to NF EN 60332-1-2. They are AD8 (water pressure < 0,2 bar), AF2 and AN3 complying with NF C13-200 standard. Both sheaths are anti-termite resistant.

Design

The cable is made of 1 or 3 bunched cores.

Electrical specifications

Calculations carried out in accordance with the IEC 60287 recommendation, given for information purposes, valid for a single joint trefoil connection and earthing of the screen at both ends.
The installation conditions must respect the rules of the art.
For the buried part, the cables are considered to be laid directly in the ground.
For the part in the open air, the cables are assumed to be laid on perforated cable trays, sheltered from the sun, at a distance from the walls equal to at least one cable diameter.

Soil resistivity: 0.85 K.m/W
Floor temperature: 20°C
Installation depth: 800 mm

Cable in the open air
Air temperature: 30°C

Short circuit characteristics according to IEC 60949.

Voltage drop is calculated for cos φ   = 0,9.

Options

NF C33-226 cables can be manufactured with the following options:

• Rated voltage 18/30(36)kV
• Copper conductor
• Bunch