Aerial Self Supporting Cable
(Solid PE Insulated, Aluminium Screened, Polyethylene Sheathed Galvanized Steel Wire Beared Cable)
Feature
Figure 8 Self-supporting cables are designed for self supporting aerial installations, mainly used in the distribution network connecting cross connection cabinet with terminal blocks, PE solid insulation and 10 pair unit system facilitate easy handling of the cable in jointing, termination and maintenance work. Cable core and galvanized steel messenger are integrally assembled to form configuration to simultaneous installation of cable and messenger.
CONSTRUCTION
Conductor
Solid annealed copper in size 0.6, 0.8 and 1.0 mm.
Insulation
Colored, solid polyethylene with excellent electrical and mechanical properties Nominal thickness of insulation as per table 1.
| Table 1. Insulation Thickness | ||||
| Conductor Diameter |
Nominal Thickness of Insulation |
|||
| 0.6 mm | 0.25mm | |||
| 0.8 mm | 0.30mm | |||
| 1.0mm | 0.35mm | |||
Quadding
4 insulated conductors are twisted evenly into a quad. The make up and color scheme are arranged as per fig.1 and Table 2
10 Pair Unit
5 quad (quad No. 1 to 5) are bunched together into 10 pair as shown in fig. 2 and than bound with colored binder tape. Color scheme of the binder tape for 10 pair unit on each layer are arranged as per Table 3.
Cable Core
Approriate number of 10 pair units are stranted into a compact and cylindrical cable, and then wrapped with layers of binder tape.
Specification
STEL K - 001 ; SII 0611 - 82 ; SNI 04 - 2064 - 1990
Cable Designation : U - E (Pe) ES
| Table 2. Color Scheme of Insulation | ||||
| QUAD No. | Color of Insulation | |||
| A | B | C | D | |
| 1 | White | Blue | Red | Black |
| 2 | White | Orange | Red | Black |
| 3 | White | Green | Red | Black |
| 4 | White | Brown | Red | Black |
| 5 | White | Grey | Red | Black |
Sheath
The polyethlene with black color providing the cable with a tough, flexible, protective cover which give the ability to withstand exposure to sunlight, atmospheric temperature, ground chemicals and stresses expected in standard insulations.
| Table 3. Color Scheme of 10 Pair Unit on Each Layer | ||
|
Number of 10 Pair Unit |
Color Of Binder |
Pair Number |
| 1 | Red | 1 - 10 |
| 2 | White | 11 - 20 |
| 3 | Yellow | 21 - 30 |
| 4 | White | 31 - 40 |
| 5 | Yellow | 41 - 50 |
NB: Binder Tape of 10 unit on each layers stars from red color, followed by white color and yellow color respectively.
|
Electrical Characteristic Conductor Resistance at ambient temperature |
|
| Conductor Diameter | Maximum |
| 0.6 mm | 65 Ohm/km |
| 0.8 mm | 36,5 Ohm/km |
| 1.0 mm | 23.4 Ohm/km |
Insulation Resistance at ambient temperature
Minimum : 10.000 M Ohm Km/ Minute
| Mutual Capacitance at 800 Hz | |
| Conductor Diameter | Maximum |
| 0.6 mm | 55 nF/km |
| 0.8 mm | 55 nF/km |
| 1.0 mm | 62 nF/km |
| Capacitance Unbalance at 800 Hz | ||
| Combination | 95% of cases | 100% of cases |
| Within a quad | Max 400 pF/300m | Max 800 pF/300m |
| between Different Quad | - | max 300 |
| between pair & screen | - | max 800 |