gui chao cable news: the number of cables should be required to meet the requirements of the gap between the trench laying-非凡电子娱乐

with the improvement of people's quality of life and living environment,

on both sides of the road or crossing the road,

densely intertwined with the formation of a weak network of spider web",

the modern city is no longer "sign", but to view image of city,

also associated with many security risks.

people yearn to the government will be able to bare wire and cable in collation,

will be placed into the ground, both to protect the cable,

can reduce the occurrence of the accident, why not?

the harm caused by open wiring brings the cable into the ground,

it has been recognized and supported by most countries,

in particular, the process of urbanization is faster in the country is more interested in the cable into the ground,

can not only beautify the urban landscape, improve the visibility of the city,

and can reduce the wire by external damage probability, reduce accident loss,

double kill. let's talk about it,

when a plurality of cables are laid or crossed,

what are the requirements for the spacing between cables?

1 the minimum distance between the power cable and the control cable is 10kv and below 0.1m,

10kv above 0.25m; different parts of the cable (including communication cable) between each other for 0.5m,

such as the use of cable partition, can be reduced to 0.1m, into the pipe without provisions.

2 the minimum distance between the cables is 0.5m. cable before and after the intersection of 1m range,

if the diaphragm is used to separate, the interval can be reduced to 0.25m, and it is not stipulated in the pipe.

3 parallel or cross the cable to maintain a certain interval is to consider the following reasons:

if the cable is too close to the cable, it will easily cause mechanical injury.

in order to prevent the cable from running out of time, the adjacent cable is burnt out,

therefore, the cable should be maintained at the appropriate intervals; cable spacing is too close to heat,

therefore, the current carrying capacity of the cable is affected; if the cable is close to each other or the cross can not keep a certain distance, the cable is in contact with each other,

alternating current corrosion".

once the cable is laid down in the cable trench, it will not only directly affect the power consumption in the city,

at the same time, it may also make the relay protection or control circuit failure,

long time can not resume production. therefore, the cable must strengthen the management of cable trench construction,

it is very important for the safe operation of power plants and substations to protect the cable from damage,

and ensure the safety and reliability of urban power supply, and provide a solid foundation for the rapid development of urban economy.