StandardsInternational : HD 620
National : NF C 33-226
NF C 33-226 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 C 13-200 standard. Both sheaths are anti-termite resistant.
The cable is made of 1 or 3 bunched cores.
EDRMAX by Nexans TM
Burial depth : 0.80 m
Soil thermal resistivity : 1.2 K m/W
Calculated from IEC 60949, permissible short circuit current is applicable for the conductor during 1s.
NF C 33-226 cables can be manufactured with the following options:
- Copper conductor
|Mechanical resistance to impacts||AG4|
|Ambient installation temperature, range||-10 .. 50°C|
|Weather resistance||AN3 / AF2|
|Flame retardant||C2, NF C 32-070|
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Docs and info
Example NEXANS - plant number- BGN7 NF C 33-226 int. designation- section - AL - 12/20 (24) kV - EDR - year - month - installation guide type - G sheath thickness - SC semi-conductor thickness - EC screen thickness - C2 RT installation temperature Commercial marking is ink marqued
Core identification: 1, 2, 3 engraved on each phase.
The marking is metric over one core sheath, as well as a tracing mark.