Application
The PVC insulated and sheathed 3 core flat cables are used for giving electrical connection to the submersible pump motors. These are manufactured keeping in mind the severe, tough and difficult conditions in which they have to operate. The slot available in the tube well being narrow the shape of the cables has to be suited for such an application. These cables conform to and are marked IS 694: 1990 up to 4.0 sq. mm. The sizes above 4.0 sq.mm. cables generally conform to IS 694 : 1990.

Features
Manufactured from bright-annealed 99.97% pure bare copper conductors these cables have low conductor resistance. The inner cores are insulated with a special grade PVC compound formulated and manufactured in-house. The tough robust outer PVC jacket protects it from the oils, greases, various chemicals and abrasions, thereby giving long life and electrical safety.

 Technical Specifications
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Technical Data
Working voltage
1100 V
Temperature range
-15 deg C to +70 deg C
Sizes
1.5 to 4.0 sq mm with ISI mark
6.0 to 95 sq mm generally conforming to IS 694:1990
Color codes
Cores - Red, Yellow and Blue
Black outer sheath
Grey sheath on specific request
Specification
IS 694:1990
Packing
500 / 1000m on drums
Note:
a. Double sheathed round 3 and 4 core de-watering cables up to 35.0 sq mm are also available on request.
b. 4 Core and 5 Core Flat cables upto 4.0 sq mm also available on request.

 

Area (Nom.) Sq. mm
Number / size of wire mm
Insulation Thickness (Nom.) mm
Sheath Thickness (Nom.) mm
Width 'W' mm
Thickness 'H' mm
Resistance @ 20° C (max.) Ohm/Km
Current carrying capacity @ 40° C Amps.
1.5
22/.3
0.6
0.9
11.0
5.0
12.10
14
2.5
36/.3
0.7
1.0
13.0
6.0
7.40
18
4.0
56/.3
0.8
1.0
15.3
6.7
4.95
26
6.0
84/.3
1.0
1.15
18.7
7.9
3.30
31
10.0
140/.3
1.0
1.40
23.7
9.9
1.91
42
16.0
226/.3
1.0
1.40
28.0
11.4
1.21
57
25.0
354/.3
1.2
2.0
35.5
14.7
0.780
72
35.0
495/.3
1.2
2.0
39.5
16.2
0.554
90
50.0
703/.3
1.4
2.20
45.5
18.3
0.386
115
70.0
360/.5
1.4
2.20
51.0
20.0
0.272
143
95.0
475/.5
1.6
2.40
60.0
23.5
0.206
165

Note: Insulation thickness, Sheath thickness and overall dimensions given in this table are nominal values. The number of wires is approximate and strand diameter is nominal; they shall be such as to satisfy the requirements of conductor resistance as per IS 8130/1984.
4 Core and 5 Core flat cables up to 4 sq. mm. are available on request.

Guidelines for Selection of 3 Core Flat Cables

1) HP Vs Current :
The full load current for submersible pump motors, 3 phase, 50 cycles, 415 ~ 425 V.

HP
5.0
 7.5
 10.0
 12.5
 15.0
 17.5
 20.0
 25.0
 30.0
 35.0
 40.0
 45.0
 50.0
 55.0
 60.0
 65.0
 70.0
 75.0
 80.0
Amp
 7.5 11.0 14.9 18.9
 22.5
 25.2
 28.4
 35.6
 42.3
 50.4
 58.1
 62.1
 67.5
 73.8
 81.0
 87.3
 93.6
 100.8
 108.0
2) Derating Factors :
Multiply the current carrying capacity of the cable by factors given below for various ambient temperatures.
Ambient Temperature ° C
30
35
40
45
50
Derating Factor
1.09
1.04
1.00
0.95
0.77

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