Compound medium voltage cable of secret type optic fibre

The utility model discloses a compound medium voltage cable of secret type optic fibre, including the cable core, be equipped with in proper order outside the cable core around covering, inner sheath and oversheath, the cable core form by the compound sinle silks transposition of three optic fibre, the compound sinle silk of optic fibre by the optical fiber unit in bosom, set up optical fiber unit outside hollow conductor and in proper order crowded packet of conductor shield, insulating layer, insulation screen, the pressure -resisting pipe outside hollow conductor constitute, be equipped with the 2nd pressure -resisting pipe between inner sheath and oversheath. The utility model has the characteristics of the external diameter is little, light in weight, and occupation space is little, with low costs, waterproof good, the security is good, the shielding is good, the crushing resistance is good etc.