Power cables are mainly used for power transmission and distribution purpose. It is an assembly of one or more individually insulated electrical conductors, usually held together with an overall sheath. The assembly is used for transmission and distribution of electrical power. Electrical power cables may be installed as permanent wiring within buildings, buried in the ground and run overhead or exposed.……Including: rubber cable, welding cable, URD cable, XLPE insulated power calbe etc.
Bare Overhead Conductors are used in overhead transmission and distribution network applications.They are also used for un-insulated hook ups, jumpers, grounding conductors and other applications. Our Conductors conform to ASTM, IEC, BS, BS EN and DIN standards.…… Including: AAC conductor, AAAC conductor, ACSR conductor, ACAR conductor, AACSR conductor, etc.
Aerial bundled cables (also aerial bundled conductors or simply ABC) are overhead power lines using several insulated phase conductors bundled tightly together, usually with a bare neutral conductor. Our abc calbe conform to ASTM, IEC, SANS standards.……Including: abc cables, cvered line wire, service drop wire etc.
1. Route selection of underwater Cable should satisfy the cable less susceptible to mechanical injury, can implement reliable protection, installation and convenient operation, reasonable economy and other requirements, and shall comply with the following provisions:
(1) cable should be laid in the riverbed stability, velocity of flow is slow, the shore is not easy to be erosion, submarine no hills or sunken ships and other obstacles, less heavy waters of anchor and trawlers are active.
(2) cable laying should not be in the dock, ferry, hydraulic building near, and not laying in dredging dredging and planning levels zone.
2. underwater cables shall be suspended in the water, should be placed in the bottom. In the waters of the navigable waterways, such as the need to guard against external mechanical damage, cable should are embedded in grooves arranged on the bottom of the proper depth of, and should be solid cover; shallow buried depth of not less than 0.5m, deepwater channel buried deep is not less than 2m.
3. underwater cable is prohibited overlapping. Adjacent cables shall maintain adequate safety spacing and shall comply with the following requirements:
(1) main channel, 1.2 times of the cable spacing should not be less than the average maximum depth. Lead to the shore spacing can be properly reduced.
(2) in not more than 1m / s velocity of non navigable river, the circuit with the single core cable distance shall not be less than 0.5m, the distance between different loop cable shall not be less than 5m.
(3) in addition to the above factors, should according to flow rate and cable water depth determination.
4. Between the cable and the industrial pipeline under water level distance not less than 50m; subject to conditions, not less than 15m.
5. underwater cable to shore section laying conditions should take appropriate protective measures, and shall comply with the following provisions:
(1) bank stability in the should be adopted to protect the pipe trench laying cable, when necessary can work well connection settings, the trench bottom should be placed in the lowest level not less than 1m.
(2) shore is not stable, should take the form of cable laying to set aside an appropriate spare circuitous length.
6. underwater cable both sides, should set up eye-catching warning signs.
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