Strong and weak wiring should keep the wiring distance

Why strong electricity weak wiring to separate?

This is because there is a magnetic field around the strong electricity, if the strong electricity weak wiring is too close to the weak signal will have an impact, the specific performance: if it is a cable TV line, the signal will not be very clear; if it is a telephone line, the phone will appear murmur; if it is a network cable, the speed of transmission will be affected and so on.

Therefore, in the strong electricity weak wiring, must follow the following strong electricity wiring distance requirements:

(1) The user cable cannot be along with the High-voltage (ac>1000v,dc>1500v) cable (bundle) line. The terminals of the communication cable and the terminal of the high voltage cable are at least 450mm apart.

(2) User cables generally avoid with low-voltage (ac<1000v,dc<1500v) wires together (bundle) along the line. The terminals of the communication cable and the terminals of the low-voltage wires (in the case of solid spacer) have a minimum interval of 150mm.

(3) The user cable can be allowed to go with the ultra low voltage (ac<42.4v,dc<60v) wire (bundle), and the terminal needs no interval.

(4) The user cable should be separated from some harmful equipment (such as arrester, corrosive fluid, object with temperature exceeding 60 ℃, etc.), and its spacing must not be less than 150mm.

(5) The power cable is separated from the user cable wiring see table 1.

Table 1 power cable separated from user cable wiring

(6) Prevention of noise separation between low-voltage cable and communication cable see table 2.





Table 2 Prevention of noise separation between low-voltage cable and communication cable





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Strong electricity and weak wiring wiring when the requirements of the distance for everyone to analyze, I hope to do related work friends have a simple reference.