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Comparative analysis of busway and low voltage cable

  • Categories:Zhongrui News
  • Author:
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  • Time of issue:2019-05-29 17:45
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(Summary description)The conductors of the busway are made of copper or aluminum. The current density is large, the resistance is small, the skin effect is small, and no derating is needed. The small voltage drop means that the energy loss is small, which ultimately helps the end user to save investment. For the cable, since the cable core is a plurality of thin copper wires, the single root area is larger than the bus bar of the same current level, and the single cable generally does not exceed 1000 A. When the capacity is large, several cables need to be connected in parallel. To be done. Therefore, the skin effect of the cable is severe, the current rating is reduced, the voltage drop is increased, the energy loss is large, the cable is easily aged, and the line is easily heated. Low-voltage cables are less secure than busbars.

Comparative analysis of busway and low voltage cable

(Summary description)The conductors of the busway are made of copper or aluminum. The current density is large, the resistance is small, the skin effect is small, and no derating is needed. The small voltage drop means that the energy loss is small, which ultimately helps the end user to save investment. For the cable, since the cable core is a plurality of thin copper wires, the single root area is larger than the bus bar of the same current level, and the single cable generally does not exceed 1000 A. When the capacity is large, several cables need to be connected in parallel. To be done. Therefore, the skin effect of the cable is severe, the current rating is reduced, the voltage drop is increased, the energy loss is large, the cable is easily aged, and the line is easily heated. Low-voltage cables are less secure than busbars.

  • Categories:Zhongrui News
  • Author:
  • Origin:
  • Time of issue:2019-05-29 17:45
  • Views:
Information

The conductors of the busway are made of copper or aluminum. The current density is large, the resistance is small, the skin effect is small, and no derating is needed. The small voltage drop means that the energy loss is small, which ultimately helps the end user to save investment. For the cable, since the cable core is a plurality of thin copper wires, the single root area is larger than the bus bar of the same current level, and the single cable generally does not exceed 1000 A. When the capacity is large, several cables need to be connected in parallel. To be done. Therefore, the skin effect of the cable is severe, the current rating is reduced, the voltage drop is increased, the energy loss is large, the cable is easily aged, and the line is easily heated. Low-voltage cables are less secure than busbars. The surface of the cable is made of rubber material. The insulation layer has poor resistance to mechanical damage. During the laying process, due to the complicated environment on the construction site, the cable skin is easily scratched, and it is also vulnerable to short-circuit accidents caused by damage of rats and insects during use. When installing the cable, the power must be cut off. If the operation is wrong, it will be dangerous. In particular, the cable should be grounded on site. Unreliable grounding will increase the risk. The busway conductors are insulated and protected by a hard outer casing. The busbar protection grades are generally IP40, IP42, IP54, IP65, up to IP66; the electrical grade busbar housing can be used as a whole grounding, and the grounding performance is very reliable. .

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