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A system developed in Germany called "Kuhlo wire" used one, two, or three rubber-insulated wires in a brass or lead-coated iron sheet tube, with a crimped seam. The enclosure could also be used as a return conductor
1) 66-220kV XLPE insulated/copper or aluminum/corrugated aluminum sheathed/PVC outer sheathed or PE outer sheathed/longitudinal swelling
2) 66-220kV XLPE insulated/copper or aluminum/corrugated aluminum sheathed/PVC outer sheathed or PE outer sheathed
Specifications:
1) 66-220kV XLPE insulated/copper or aluminum/corrugated aluminum sheathed/PVC outer sheathed or PE outer sheathed/longitudinal swelling
2) 66-220kV XLPE insulated/copper or aluminum/corrugated aluminum sheathed/PVC outer sheathed or PE outer sheathed
Kuhlo wire could be run exposed on surfaces and painted, or embedded in plaster. Special outlet and junction boxes were made for lamps and switches, made either of porcelain or sheet steel. The crimped seam was not considered as watertight as the Stannos wire used in England, which had a soldered sheath
A somewhat similar system called "concentric wiring" was introduced in the United States around 1905. In this system, an insulated electrical wire was wrapped with copper tape which was then soldered, forming the grounded (return) conductor of the wiring system.
When the cable aerial branched cable used in AC system, the rated voltage of cable should be at least equal the rated voltage of system. When the cable used in DC system, the rated voltage of cable should be bigger than 1.5 times of the rated voltage of system.
It was never adopted into the US National Electrical Code. Drawbacks of the system were that special fittings were required, and that any defect in the connection of the sheath would result in the sheath becoming energized.
Metal moulding systems, with a flattened oval section consisting of a base strip and a snap-on cap channel, were more costly than open wiring or wooden moulding, but could be easily run on wall surfaces. Similar surface mounted raceway wiring systems are still available today.
Armoured cables with two rubber-insulated conductors in a flexible metal sheath were used as early as 1906, and were considered at the time a better method than open knob-and-tube wiring, although much more expensive.
Cables usually are secured by special fittings where they enter electrical apparatus; this may be a simple screw clamp for jacketed cables in a dry location, or a polymer-gasketed cable connector that mechanically engages the armour of an armoured cable and provides a water-resistant connection
1, Rated power-frequency voltage Uo/U : 0.6/1kV
2,Max.permissible continuous operating temperature of conductor: 90
3,Max.short-circuit temperature of the conductor shall not exceed 250.(5s maximum duration ).
4,The ambient temperature under installation should not below 0
5, The bending radius of a cable should not less than 15 times of the ca
The connections of individual conductors of a cable, cables must be supported near their entrance to devices and at regular intervals through their length. In tall buildings special designs are required to support the conductors of vertical runs of cable. Usually, only one cable per fitting is allowed unless the fitting is otherwise rated.
XLPE insulation, steel tape armor, PVC sheath power cable is used to be laid underground, the cable could bear certain mechanical force, but it couldn’t bear great pulling force.
Standards: IEC502 , IEC332-3
Conductor: Cu
Insulation: XLPE( Cross-Linked Polyethylene )
Armored: Steel tape
Sheath: PVC( Premature Ventricular Contraction )
The allowable current will be different for wet or dry, for hot (attic) or cool (underground) locations. In a run of cable through several areas, the most severe area will determine the appropriate rating of the overall run.
Copper Power Cable
CU/PE/STA/PVC 1kv 4*
Tables in electrical safety codes give the maximum allowable current for a particular size of conductor, for the voltage and temperature rating at the surface of the conductor for a given physical environment, including the insulation type and thickness.
Copper Power Cable
CU/PE/STA/PVC 1kv 4*
1.including products for flame-resistant,fire-resistant and anti-termite
2.mark"Z-"before original type for flame-resistant product.
3.mark"N-"before original type for fire-resistant product.conductors usually are round,fire-resistant materials is on surface of the round conductor
Because multiple conductors bundled in a cable cannot dissipate heat as easily as single insulated conductors, those circuits are always rated at a lower "ampacity".
The whole assembly is drawn down to smaller sizes, thereby compressing the powder. Such cables have a certified fire resistance rating, are more costly than non-fire rated cable, and have little flexibility and are effectively rigid to the user of the cable.
Another form of high-temperature cable is a mineral insulated cable, with individual conductors placed within a copper tube, and the space filled with magnesium oxide powder
Product Details:
Place of Origin:Chongqing,China (Mainland)
Brand Name:taisheng
Model Number:TJ
Insulation Material:no
Type:conductor
Application:Power Station
Conductor Material:Copper
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