Page 568 - Industrial Power Engineering and Applications Handbook

Table A16.5 HT Cables up to 11 kV: Armoured three-core power cables 1.9/3.3 kVa

No. of cores Conductor Thickness Thickness Armouring Thickness Approx. Approx Max. d.c. Approx. Approx. Approx. Current rating Short- Normal delivery
and cross- (AI) of PVC of common,flat wire of PVC 0.d. net wt. resktance a.c. resi- reactance capacitance circuit
sectional minimum insulation coverin1 size outer of at stance ut at per phase raring
area no. of wires (nom.) minimum sheath cable 20°C operating 50 Hz Direct In In air for Length Drum Approx.
wrapped (min.) temp. in duct I second size gross
70OC ground weight
No. x mm2 mm mm mm mm mm kghm R/km R/km Rkm pFAm Amps Amps Amps kA m kg
(~m..s.)
__ __ -
3x25 sm 6 2.3 0.3 4.0 x 0.8 1.40 28.5 1060 1.20 1.44 0.104 0.445 14 61 70 1.90 500 A 1206 670
3x35 am 6 2.3 0.3 4.0 xO.8 1.56 31.0 1260 0.868 1.04 0.100 0.500 89 75 86 2.66 500 A 1206 770
3 x50 sm 6 2.3 0.4 4.0 x0.8 1.56 34.0 1470 0.641 0.770 0.096 0.555 1 05 92 105 3.80 500 A 1407 930
3x70 sm 12 2.3 0.4 4.0~ 0.8 1.56 37.0 1760 0.443 0.532 0.09 I 0.630 I30 110 130 5.32 500 A 1407 1070
3x95 sm 15 2.3 0.4 4.0 xO.8 1.72 40.0 2140 0.320 0.385 0.088 0.7 15 160 135 155 7.22 500 A 1506 1360
3x120 sm 15 2.3 0.5 4.0 x0.n 1.72 43.0 2460 0.253 0.305 0.086 0.785 180 150 180 9.12 500 A 1608 1560
3x150 sm 15 2.3 0.5 4.0 x0.X 1.88 45.0 2810 0.206 0.249 0.084 0.990 205 170 205 11.4 500 A 1608 1740
3 x185 sm 30 2.3 0.5 4.0 xO.8 2.04 49.0 3300 0. 164 0.199 0.083 1.080 230 195 240 14.1 500 B 1809 2090
3x240 sm 30 2.3 0.6 4.0 xO.8 2.20 54.0 4050 0.125 0.152 0.081 1.210 265 230 280 18.2 500 B 2010 2550
3x300 sm 30 2.5 0.6 4.0 xO.8 2.36 60.0 4890 0.100 0.123 0.080 1.230 295 250 315 22.8 500 B 2212 3150
3 x400 sm 53 2.7 0.7 4.0 xO.8 2.52 67.0 6030 0.0778 0.0975 0.080 1.275 325 280 375 30.4 500 B B 2212G 3720
2414
3x500 sm 53 3.0 0.7 4.0 xO.8 2.84 76.0 7510 0.0605 0.0767 0.080 1.290 345 305 405 38.0 450 4240
~
'These cable can be used on 3.3 kV grounded or ungrounded systems
Courtesy: CCI

Table A16.6 Armoured three-core power cable 3.N6.6 kV (grounded system)

No. of cores Conductor Thickness Thicknesr Armouring Thickness Approx Approx. Max. d.c. Approx. Approx. Approx. Current ratinx Short- Normal delivety
and cross- (4) of PVC of commonflat w,ire of PVC o.d. net wt. resistance U.C. resi- reactance capacitance __ - circuit ____
sectional minimum insulation covering size outer of at stance at at per pha.rr rating
urea no. of wires (nom. J minimum sheath cable 20°C operating 50 Hz Direct In In air for Length Drum Approx.
wrapped (min.) temp. in ducr 1 second si7e gross
70°C ground weight
NO. x mn? mm mm rnm mm kR/km R/km R/km R/km pF/km Amp5 Amps Amps kA m kg
(cm..s.)
~~~~ ~ ~ ~ ~__
3x25 sm 6 3.6 0.4 4.0x0.8 I .56 35 1530 1.20 1.44 0.119 0.340 74 61 70 1 .YO 500 A 1407 960
3x35 sm 6 3.6 0.4 4.0x0.8 I .56 38 1740 0.868 1.04 0.113 0.375 89 75 86 2.66 500 A 1506 1160
3x50 sm 6 3.6 0.4 4.0x0.8 1.72 41 2030 0.641 0.770 0.108 0.415 105 92 105 3.80 500 A 1506 1300
3x70 sm 12 3.6 0.5 4.0x0.8 1.72 44 2370 0.443 0.532 0.103 0.470 130 110 130 5.32 500 A 1608 1 520
3x95 sm 15 3.6 0.5 4.0x0.8 1.88 47 2760 0.320 0.385 0.098 0.520 160 135 155 7.22 500 A 1608 1710
3x120 sm 15 3.6 0.5 4.0x0.8 1.88 49 3050 0.253 0.305 0.095 0.565 180 150 180 9.12 500 B 1809 1960
3x150 sm 15 3.6 0.6 4.0~0.8 2.04 52 3450 0.206 0.249 0.093 0.720 205 170 205 11.4 500 n 18w 2160
3x185 sm 30 3.6 0.6 4.0x0.8 2.20 56 4010 0.164 0.199 0090 0.775 230 195 240 14.1 500 B 2010 2530
3x240 sm 30 3.6 0.6 4.0x0.8 2.36 61 4800 0.125 0.152 0.088 0.860 265 230 280 18.2 500 B 2212 3100
3x300 sm 30 3.6 0.7 4.0x0.8 2.52 66 5630 0.100 0.123 0086 0.940 295 250 315 222 500 B 22126 3520
3x400 sm 53 3.6 0.7 4.OxO.X 2.68 72 6690 0.0778 0.0975 o on4 1.030 325 280 375 30.4 450 n 2414 3870
3x500 sm 53 3.6 0.7 4.0x0.8 2.84 79 8020 0.0605 0.0767 0.082 1.125 345 305 405 38.0 450 B 2414 4470
__ -
Courtesy: CCI