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Power supply and distribution methods of low-voltage system

A low-voltage system, power supply and distribution technology, applied to electrical components, emergency protection circuit devices, bus/line layout, etc., to achieve the effect of ensuring reliability and facilitating timely processing

Inactive Publication Date: 2010-08-11
张兵
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a low-voltage system power supply and distribution method. By adopting the method of connecting main cables or main busbars with different cross-sectional areas according to the step change of carrying capacity, the load of main cables or main busbars is well solved. The problem of reasonable matching between the flow rate and the passing current

Method used

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  • Power supply and distribution methods of low-voltage system
  • Power supply and distribution methods of low-voltage system
  • Power supply and distribution methods of low-voltage system

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Embodiment Construction

[0026] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0027] figure 1 Shown in is the schematic diagram of the power distribution of the segmented variable-diameter main cable of the embodiment to multiple power consumption units figure 1 . In this power distribution embodiment, the main circuit breaker switch 1 feeds out a main cable 2 from the power supply, and one end of one or more branch cables 4 is connected to the main cable 2 through a puncture clamp 3, and the branch cables 4 The other end is connected to the branch circuit breaker 5, which is connected to the electric load 6; the main cable 2 branched by the puncture clamp 3 is connected to the main cable 8 with a smaller cable cross-sectional area through the secondary circuit breaker 7, and the other Or one end of multiple branch cables 10 is connected to the main cable 8 with a smaller cross-sectional area through the puncture clamp 9, and ...

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Abstract

The invention belongs to the field of power supply and distribution of low-voltage systems and solves the problem that the current-carrying capacities of main cables or main busbars are not reasonably matched with the passing current in the full path in the mode that a power supply circuit is connected with a plurality of electrical units. The system adopts the mode that the main cables or main busbars with different sectional areas are connected according to stepped variation of the current-carrying capacities and is provided with one-circuit sectional variable diameter main cables or main busbars. The main cables or main busbars are connected with a plurality of electrical units. The current-carrying capacities of the cables or busbars are reasonably matched with the passing current on the whole sections of the main cables or main busbars. Meanwhile, secondary circuit breakers are arranged on the variable diameter parts of the main cables or main busbars and are used for sectional protection of the cables or busbars with different current-carrying capacities in the same circuit together with a main circuit breaker. In the method, the main and secondary circuit breakers act timely when the main cables or main busbars have faults while the materials and the manufacturing cost are saved, not only the requirement of power supply reliability is satisfied, but also the fault range is accurately judged so as to be convenient for rush repair.

Description

technical field [0001] The invention relates to the technical field of a low-voltage power supply and power distribution system. Background technique [0002] In the known technology, for example, the low-voltage power supply method uses a power supply circuit to connect multiple power consumption units, which can be divided into the following three types: one is to connect a pre-branch cable to the outlet circuit breaker, and each branch cable is connected to multiple power consumption units. ; The other is that the outlet circuit breaker is connected to a main cable, and each branch cable is connected to the main cable through a piercing wire, and each branch cable is connected to multiple power units; the third is that the outlet circuit breaker is connected to a dense busbar Each branch cable is connected to the busbar by plugging the switch box on the busway, and each branch cable is connected to multiple power units. [0003] The disadvantage of the above power supply...

Claims

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Application Information

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IPC IPC(8): H02B1/20H02H7/26
Inventor 张兵
Owner 张兵
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