The underground-laying depth of an electric power cable is obtained on the basis of temperature data of the electric power cable laid underground, ambient temperature data of a place where the electric power cable is laid underground, calorific power data of the electric power cable, thermal ...
PURPOSE:To prevent the imposition of local, great loads to a cable, by mounting a snake snake guide to a shaft or an inclined shaft for connecting the ground and a laying hole of an underground deep portion, and by pulling the cable down while snaking the cable by means of the snake gu...
Depth of laying in direct:100cm Coefficient of thermal resistivity of soil 100 .cm/w The cable can be laid without drop restriction, and the environment temperature shall not be lower than 0 . Single core, steel tape armoured cable should be ...
摘要: PURPOSE: To provide a pipe aggregate for laying underground cables having a novel structure and the method for manufacturing the aggregate.收藏 引用 批量引用 报错 分享 文库来源 求助全文 PIPE AGGREGATE FOR LAYING UNDERGROUND CABLE AND IT 优质文献 ...
3. Service Conditions and Parameters of Cable Max. Conductor Operating Temperature: 90 Short Circuit Temperature: 250 Not more than 5 seconds Environmental temperature of operating: In air: 40 Underground: 25 Depth of laying in direct: 80cm ...
A wire structure of an underground wire cable is provided to support an underground pipe continuously by upwardly supporting an upper support through the extension of a spring when the ground under an underground pipe sinks. A supporting instrument(100) has a cylinder with opened upper/lower ends...
Heavy Duty Underground Manhole Corner Cable Pulley Wire Pulling Laying Roller Cable Guide Roller For 50-150mm Cable Basic Introduction Of Cable RollerPower and communication cables are often laid in open trenches where the road and ground c...
The main purpose of this paper is to quantify the thermal effect of solar radiation on the ampacity of a low voltage underground cable with cross-linked polyethylene (XLPE) insulation. The quantification was performed for different laying depths of the cable, different colors of the upper surface...
Depth of laying in direct: 100cm Coefficient of thermal resistivity of soil 100. Cm/w The cable can be laid without drop restriction, and the environment temperature shall not be lower than 0. Single core, steel tape armoured cable should be only aplied to direct-circuit line. For ...
1. An apparatus for installing cable underground, comprising: a power driven land vehicle having a front end, a back end and opposite sides; an elongated cable laying plow blade; a plow blade support arrangement mounted on said land vehicle and supporting said blade for movement with said vehic...