Prefabricated Branch Low-voltage Electric Cable Power Supply Reliability 10mm2

Product Specification

Branch Cable

■ Product standard

JG/T147-2002 and Enterprise standard

 Description products

In the recent years, with the development of our national economy and basic establishment, more middle buildings, high buildings and super high buildings distribution have been built up. Owing to the increase of the complexity and capacity of distribution among modern buildings, stability and economic requirement to mainline of distribution are getting higher and higher. In order to satisfy the market requirement, we consulted international and national relevant information, and under the direction of relative expert, we researched and developed branch cable (pre-made branch cable).The product was tested by the authorization dept. of national wire & cable -National quality supervising & testing center for cable and wire and antiflame construction material. All the technical functions are up to the enterprise standard requirements.The main function exceed JCS376 Japan Standard Requirement of “With Branch Cable”. It is mainly suitable for power supply units and controller switching equipment transmitting electricity with 1000V rated voltage and below in middle and high building, industrial and mining unit, enterprise unit and institution. The product has the advantages of safe and reliable power supply, excellent insulating performance, convenient construction and installation, low cost of distribution, wide application scope, wide arrange of varieties and specification, and low requirements of installation environment. In foreign advanced countries, cable with branch has been widely applied to replace the transmission method of bus slots. Compared with bus slots, the product has the additional functions of anti-vibration, water proofing, and flame-resistance, which avoid troubles of installation and maintenance of bus slots.

■ Merits of Prefabricated Branch Cable

1. The product possesses fine power supply reliability

 (1) There is no joint on main cable’s conductor, so it has a good continuity while fault points being reduced.

 (2) The joints of prefabricated branch cable have been manufactured by whole factory-used mechanical equipment so that the instability caused by human factor will be greatly reduced.

 (3) The Japanese advanced technology has been introduced for designing branch joint structure, the contact resistance of it is very small and never be influenced by heat expansion or cold shrinkage.

 (4) The branch joint is shaped in a short time, so changes of contact resistance, caused by oxidation because the conductor being exposed in the open air for a long time, can be completely avoided.

2. Electric Distribution Cost Being Obviously Reduced

(1)As compared with bus-bar groove, it can reduce the engineering cost while its technical and economic targets are so high and comprehensive economic benefits are obvious.

3. Various Specifications, Flexible Selection and Free Combination

 (1) Main cable from 10mm² to 630mm²; branch cable from 6mm² to 400mm², freely combined.

 (2) A variety of cables, such as FZ-VV, FZ-ZR-VV, FZ-NH-VV, FZ-YJV, FZ-ZR-YJV, FZ-NH-YJV, FZ-WDZ-YJE, FZ-DL-NH-YJV etc, all of them can be selected according to different requirements.

 (3) Branch cable can be installed in the light of building conditions.

4. Low Environment Requirements for Installation, Easy for Construction

 (1) Occupying a small area, the product is nice for the effective use of construction area, while it needs only a limited space in construction.

 (2) Both its requirements for environment conditions and installation precision are very common.

 (3) It can be installed easily and one winder is enough for installation; and its installation period is also very short, it only needs 5%-10% installation hours of that of bus-bar groove, with low labor strength.

 (4) Due to its bending radius is small, the installation difficulties of such product will be greatly reduced,- and the occupied space is also small.

5. Excellent Vibration Resistance, Air-Tightness, Waterproof and Refractory

 (1) Fine Vibration resistance: When the joint of bus-bar groove is connected with machinery, looseness of especially, no measures should be adopted when the cable passes the settlement joint of building.

 (2) Fine air-tightness and waterproof: the product can work normally in a wet circumstance and also can be laid in the open air or underground.

 (3) “NH” type of prefabricated branch cable is adopted, so 90 min of normal power supply still can be kept under firing.

6. No Maintenance

 (1) If the prefabricated branch cable is correctly installed following the relative requirements, its one-time cutting-in function is effective.

 (2) The normally operated prefabricated branch cable is no necessary to make any maintenance.

■ Type and Name of Cable

■ Specifications of Main Cable & branch Cable of Prefabricated Branch Cable

■ Structure of Prefabricated Branch Cable

Both standard

 maincable and line cable are insulated and sheathed with the relative materials conforming to their types and manufactured according to the IEC, GB and JCS. Usually the main cable is made with single-core or stranded multi-core (2-core to 5-core), branch cable is adopted single-core. The features of cable structure as follows.

1. Non-fire-resisting cable structure

1. Conductor        2. Insulation        3. Sheath

    2.  Structure of fire-resisting Cable

             1. Conductor           2. Fire-resisting layer

             3. Insulation            4.Sheath

3. Joint Structure of Branch Cable

   The joint of prefabricated branch cable is adopted special PVC or synthetic material, the right-sided drawing shows the joint of branch cable.

■Main Technical Properties of Prefabricated Branch Cable

■ Structure Parameter & Electricity Property of 0.6/1kV Single-Core XLPE Insulated Prefabricated Branch Cable.

(Also suiting for the prefabricated branch cable of flame-retarding, fire-resisting, low-halogen, low-fume and

no-halogen)

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