LT Power Cables

UNINYVIN CABLE

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Application

These cables are used in UPS systems and server rooms as the nylon and fiber glass braid on the cable does not allows the heat generated in the conductor, due to continuous operation, to be felt in the surrounding areas. These cables are widely used in aircraft cabling.

Cable Construction

Conductor : Annealed tinned copper to IS:10241 Part 3, uniformly bunched to form a circular shape

Insulation : Special core insulation HR-PVC 105° C

Primary Braid : Braided with glass fiber, 100% coverage

Secondary Braid : Braided with nylon fiber, 100% coverage

Lacquer : Overall construction is finally lacquered with nylon varnish

Properties

Max. Operating Voltage : 600V r.m.s.

Operating Temperature Range : -35°C to 105°C

Resistant to ester based fluids (hydraulic oil), acids, chemicals and solvents. The nylon and glass fibers are very good heat resistant materials.

Cable Design Parameters

Part Number Cable Size Conductor Radial Thickness Nylon Braidand Lacquer Overall Diameter of Cable DC
Conductor
Resistance
at 20°C
(Ω/km)
Max. Current Rating (Amps.) – BS G 177
Nom.Cross
Sectional
Area
(Sq. mm)
No. & Dia.of Wiresin (mm) Max.
Conductor
Diameter
(mm)
Min.
Conductor
Diameter
(mm)
Min.
PVC
Insulation
Max.(mm) Min.(mm) Max.(mm) Min.(mm)
120401050001 14 2.05 70/0.193 1.956 1.803 0.279 0.178 0.076 3.4 3 9.2 31
120401060001 12 3.22 110/0.191 2.438 2.286 0.279 0.178 0.076 3.8 3.5 5.85 43
120401070001 10 5.33 73/0.305 3.15 2.896 0.381 0.381 0.127 5 4. 6 3.532 61
120401080001 8 8.76 120/0.305 3.242 3.937 0.381 0.381 0.127 6.3 5.9 2.154 87
120401090001 6 13.3 182/0.305 5.537 5.08 0.381 0.381 0.127 7.6 7.3 1.422 115
120401100001 4 21.5 294/0.305 6.909 6.452 0.483 0.381 0.127 9.3 8.8 0.877 160
120401110001 2 33.3 203/0.457 8.763 8.128 0.483 0.381 0.127 11.0 10.5 0.565 200
120401120001 1 40.7 248/0.457 9.754 9.119 0.559 0.381 0.127 12.2 11.7 0.463 220
120401130001 0 53.0 323/0.457 10.973 10.338 0.635 0.381 0.127 13.7 13.0 0.355 240
120401140001 00 68.3 416/0.457 12.446 11.684 0.686 0.381 0.127 15.4 14.6 0.276 270

Table I : Current Ratings for Multiple Circuits

Cable Size Nominal Cross Sectional Area (Sq. mm) Max. Current Rating (Amps)
Single Cable 3 – Bunched Cables 7 – Bunched Cables 12 – Bunched Cables
14 2.05 31 24 17 12
12 3.22 43 30 22 15
10 5.33 61 47 36 25
8 8.76 87 65 49 36
6 13.3 115 87 65
4 21.5 160 120 92
2 33.3 200 155 120
1 40.7 220 165 130
0 53 240 185 168*
00 68.3 270 210/240* 190**

* Denotes two cables only

** Denotes five cables only

Note :

1) The current rating mentioned in Table I are for bunched cables in free air at 40 °C.

2) Derating factors mentioned in Table II, shall to be used for higher ambient temperature.

Table II : Derating Factor of Uninyvin Cable for Different Ambient Temperature

Ambient temp. (°C) 40 45 50 55 60 65 70 75 80 85 90 95 100
Derating factor 1.0 0.96 0.92 0.88 0.83 0.78 0.75 0.73 0.68 0.62 0.53 0.48 0.3

Table III : Maximum 1 Minute Current Ratings for Multiple Circuits

Cable Size Nominal Cross Sectional Area (Sq. mm) Max. Current Rating (Amps)
Single Cable 3 – Bunched Cables 7 – Bunched Cables 12 – Bunched Cables
14 2.05 50 47 43 42
12 3.22 72 67 62 60
10 5.33 110 107 104 101
8 8.76 173 165 159 153
6 13.3 250 236 230
4 21.5 390 378 360
2 33.3 545 530 520
1 40.7 620 600 590
0 53 705 690 680
00 68.3 820 810 800

Table IV : Test for Resistance to Fluids

Sr. No. Fluid Represented Test Fluids Temp. of Test Max. Change in Dia. %
1 Aviation Turbine Fuel Kerosene 20 ± 0.5 5
2 Fuel 70% ISO Octane 30% Toluene by Vol. 20 ± 0.5 5
3 Hydraulic Fluid 80% Ethylene Glycol Mono Ethyl Ether, 20% Castor Oil by Vol. 50 ± 2 5
4 Ester Based Lubricating Oil Ester Based Hydraulic Fluid 100 ± 2 5

Note: 1) Uninyvin cables as per BS G 177 are meant for air craft (cabling) flying under tropical weather conditions .

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