Use characteristics of 0.6/1kV PVC insulated overhead cable
NEW

2013-01-21

Use characteristics of 0.6/1kV PVC insulated overhead cable

1) The rated voltage U0/U is 0.6/1kV. 2) Long-term allowable working temperature of cable conductor: PVC and polyethylene insulation shall not exceed 70 ℃. XLPE insulation shall not exceed 90 ℃. 3) The laying temperature of the cable should not be lower than -20 ℃. 4) Allowable bending radius of the cable: if the outer diameter (D) of the cable is less than 25mm, it shall not be less than 4D. Cable diameter (D) of 25mm and above, should not be less than 6D.

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Use characteristics of XLPE insulated PVC sheathed power cable
NEW

2013-01-21

Use characteristics of XLPE insulated PVC sheathed power cable

1) The maximum rated temperature of the cable conductor is 90 ℃. 2) The maximum temperature of the cable conductor shall not exceed 250 ℃ during short circuit (the longest duration shall not exceed 5s). 3) The allowable bending radius of single-core cable is 20(d + D)± 5%. The allowable bending radius of multi-core cable is 15(d + D)± 5%. D = actual outer diameter of cable sample (mm)d = actual outer diameter of conductor (mm)4) cable laying temperature is not lower than 0 ℃.

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Use characteristics of PVC insulated PVC sheathed power cable
NEW

2013-01-21

Use characteristics of PVC insulated PVC sheathed power cable

1) The maximum rated temperature of the cable conductor is 70 ℃. 2) The maximum temperature of the cable conductor shall not exceed 160 ℃ during short circuit (the longest duration shall not exceed 5S). 3) The ambient temperature during cable laying shall not be lower than 0 ℃, and the minimum bending diameter shall be 2 times of the diameter of the cylinder used for cable bending test. Note: The laying mode and reference parameters used to calculate the cable ampacity are: laying in air: ambient temperature 40 ℃; laying in soil: ambient temperature 25 ℃; the soil thermal resistance coefficient is 1.0k · m/w, and the arrangement mode of single-core cables is triangular (contact with each other).

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Classification of power cables
NEW

2019-02-27

Classification of power cables

The conductor structure of large-size PVC insulated cables is generally fan-shaped. The rated working temperature of thermoplastic cables: 70 ℃ represents the product model: VV VLV VY VV22 VLV22 VV23 VV32 VV33 VV42 VV43, etc. XLPE insulated cable thermosetting cable rated working temperature: 90 ℃ working temperature and short circuit working temperature are greatly improved: working temperature rises from 70 to 90 ℃ short circuit working temperature (5 seconds) rises from 160 to 250 ℃ for low voltage cables, sector conductors are mainly used, and for medium and high voltage cable conductors, sector conductors are adopted

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The code and meaning of the model part of the bare wire product.
NEW

2013-02-19

The code and meaning of the model part of the bare wire product.

The code and meaning of the model part of the bare wire product.

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The development history of the world wire and cable
NEW

2019-02-27

The development history of the world wire and cable

In 500 BC, Greece discovered friction electricity. In 1200, Italy set off a Renaissance spread across Europe, the rise of modern natural science. In 1752, the American scientist Franklin invented the lightning rod and the wire grounding, from then on, the wire began to apply. In 1826, the German physicist Ohm discovered Ohm's law and determined the conductivity of metals. In 1851, Britain laid a submarine cable across the English Channel. Since then, Europe and the United States have developed in 1879, the United States Edison invented the incandescent electric lamp, made of jute asphalt insulated power cable, laying in New York. In 1927, the United States for the first time.

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