(1) the attenuation of fiber and joint should not be increased after the cable is connected.
(2) the cable joint box shall be convenient for loading and unloading. (3) the insulation resistance between all metal parts of the Cable Junction Box and the earth shall not be less than 10 km ¦Ø (to be tested after 24 hours of immersion) .
(4) the junction box of optical cable shall have a grounding lead, the length of which shall be stipulated in the contract. The insulation between the lead wire and the Earth should not be less than 10 km ¦Ø before grounding (test after 24 hours of immersion) . Cable joints (including junction boxes) shall be subjected to rigorous inspection and testing. The test items, methods and technical indicators shall be provided by the supplier and shall be agreed upon in the contract. Items should be not less than the following: pressure, tension, i***ct, bending, torsion, vibration, high and low temperature cycle, gas closed, moisture transmission, to the ground insulation (connected to the ground lead test) .
Optical cable junction box is called optical cable junction box, also known as optical cable junction package, metal junction box, optical cable junction box and shell-type junction box. It is mainly suitable for ADSS/OPGW cable overhead straight-through and branch connection. The newly developed aluminum alloy joint box of dingheng electric power solves the defects of air leakage and loose sealing in the process of sealing, and adopts the sealing method of silicon rubber sealing ring, co***red with bolt fixing, it has the advantages of anti-corrosion, waterproof, du***roof, i***ct resistance and long life. The utility model has the functions of straight-through connection and split connection, and can play the role of sealing, protecting, placing and storing the reserved optical fiber, etc. , so that it is free from external environmental factors, can be out of five fiber optic cable, installed in the overhead pole, tower. Rod Junction Box: equipped with a set of 1.2 m long steel |
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