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PVC INSULATED ARMOURED & UNARMOURED POWER CONTROL CABLES WITH COPPER CONDUCTORS

CONDUCTOR :
The construction of conductor is as follows :
Copper Sq. mm. Solid / Stranded Flexibility Class
1 to 1.5 Solid Class 1 as per 1S:8130 /1984
2.5 to 6 Solid / Stranded Class 1 / Class 2 as per 1S:8130 /1984
10 and above Stranded Class 2 as per 1S:8130 /1984
INSULATION :
Insulation is of PVC compound as per the requirements of IS : 5831 (1984).

Type

Application

PVC Compound

Max. Conductor Temperature

A

Insulation

General Purpose PVC (GPPVC)

70° C

C

Insulation

Heat Resistant PVC (HRPVC)

85° C


INNER SHEATH :
Cables having two or more cores are provided with a common inner sheath applied either by PVC extrusion or by with PVC tape.

ARMOURING :
Where the calculated diameter of inner sheath does not exceed 13.00 mm, the armour is of round galvanised steel wires and for calculated diameter of inner sheath above 13.00 mm, flat galvanised steel wires are used.

OUTER SHEATH :
The outer sheath is of PVC conforming to the requirements of STI compound of IS : 5831 (1984). The colour of outer sheath is generally black or grey.

CORE IDENTIFICATION :
For Power cables and Control cables upto 4 cores, the cores are identified by different colours as per IS : 1554 :

Single core : Red, Black, Yellow or Blue
2 Core : Red and Black
3 Core : Red, Yellow and Blue
4 Core : Red, Yellow, Blue and Black
5 Core : Red, Yellow, Blue, Black and Grey.

Where the number of cores exceed 5, two adjacent cores are blue for reference and yellow for direction in each layer. The remaining cores in each layer are grey. On specific request we can also provide core numbering.

CURRENT RATINGS :
The current ratings given based on normal conditions of installation described below :
1. Maximum Conductor Temperature 70° C for GPPVC Insulation &
85° C for HRPVC Insulation
2. Thermal Resistivity of Soil 150° C cm/w
3. Thermal Resistivity of PVC 650° C cm/w
4. Ground Temperature 30° C
5. Ambient air temperature 40° C
6.
 Depth of laying (to the highest point of cable laid direct in the ground.) 75 cms

Cables shall only be operated at their full rating if the minimum current at which circuit protection is designed to operate does not exceed 1.5 times (in the case of cables in air or in ducts) or 1.3 times (in the case of cables laid direct in the ground) the values tabulated.

Note : For cables in air, no reduction in current rating is necessary provided that

1. The horizontal clearance between circuits is :
(a) not less than six times the overall diameter of an individual cable, and
(b) not less than the overall width of an individual circuit, except that the horizontal clearance need not in any case exceed 15 cm.
2. The vertical clearance between circuits is not less than 15 cm
3. If the number of circuits exceeds 4, they are installed in a horizontal plane.

However, for installation conditions other than above, current rating factors incorporated in IS:3961 Part II may please be applied.

Short Circuit Rating in K. ampere for One Second duration :

Area of Conductor
sq.mm.

Copper Conductor
PVC

Copper Conductor
HRPVC

1.5

0.169

0.153

2.5

0.283

0.255

4.0

0.452

0.406

6.0

0.679

0.612

10.0

1.132

1.020

16.0

1.810

1.632

25.0

2.830

2.550

35.0

3.960

3.570

50.0

5.660

5.100

70.0

7.920

7.140

95.0

10.750

9.690

120.0

13.580

13.34

150.0

16.980

15.300

185.0

20.940

18.870

240.0

27.160

24.480

Table 1 : 2 Core, 3 Core & 4 Core Copper Conductor, PVC insulated, PVC Sheathed, Unarmoured/Armoured Cables - 650 / 1100 Volts.

Table 2 : 1.5 Sq.mm., Solid Copper Conductor, PVC Insulated, PVC Sheathed, Unarmoured/Armoured Multi Core Control Cables - 650 / 1100 Volts.

Table 3 : 2.5 Sq.mm., Solid Copper Conductor, PVC Insulated, PVC Sheathed, Unarmoured/Armoured Multi Core Control Cables - 650 / 1100 Volts.
Factory & Regd. Office : D-7, MIDC Ambad, Nashik - 422 010 , Mah. , India. Telephone : +91 253 2382340 / 2382430.FAX : +91 253 2382430.