ACL Fire Rated Cables Catalogue
ACL Fire Rated Cables Catalogue
ACL Fire Rated Cables Catalogue
5-6
7 -12
13
1 CORE EARTH CABLES FLEXIBLE - Cu / LSHF 450/750V 13
1 CORE Cu / LSHF / LSHF 300/500 V 14
2 CORE Cu / LSHF / LSHF 300/500 V 15
3 CORE Cu / LSHF / LSHF 300/500 V 15
4 CORE Cu / LSHF / LSHF 300/500 V 14
2,3 & 4 CORE FLXIBLE Cu / LSHF / LSHF 300/300 V 16
2,3,4 & 5 CORE FLXIBLE Cu / LSHF / LSHF 300/500 V 16
1 CORE UNARMOURED CABLES - Cu / LSHF / LSHF 600/1000 V 17
2 CORE UNARMOURED CABLES - Cu / LSHF / LSHF 600/1000 V 17
3 CORE UNARMOURED CABLES - Cu / LSHF/ LSHF 600/1000 V 18
4 CORE UNARMOURED CABLES - Cu / LSHF/ LSHF 600/1000 V 18
1 CORE UNARMOURED CABLES - Cu / FRXLPE / LSHF 600/1000 V 19
2 CORE UNARMOURED CABLES - Cu / FRXLPE / LSHF 600/1000 V 19
3 CORE UNARMOURED CABLES - Cu / FRXLPE / LSHF 600/1000 V 20
4 CORE UNARMOURED CABLES - Cu / FRXLPE / LSHF 600/1000 V 20
1 CORE ARMOURED CABLES - Cu / LSHF / AWA / LSHF 600/1000 V 21
2 CORE ARMOURED CABLES - Cu / LSHF / SWA / LSHF 600/1000 V 21
3 CORE ARMOURED CABLES - Cu / LSHF / SWA / LSHF 600/1000 V 22
4 CORE ARMOURED CABLES - Cu / LSHF / SWA / LSHF 600/1000 V 22
1 CORE ARMOURED CABLES - Cu / FRXLPE / AWA / LSHF 600/1000 V 23
2 CORE ARMOURED CABLES - Cu / FRXLPE / SWA / LSHF 600/1000 V 23
3 CORE ARMOURED CABLES - Cu / FRXLPE / SWA / LSHF 600/1000 V 24
4 CORE ARMOURED CABLES - Cu / FRXLPE / SWA / LSHF 600/1000 V 24
Page3
PAGE
Page6
ACL Fire Zero Prevent Danger
LOW SMOKE HALOGEN FREE (LSHF) CABLES
In the event of a short circuit, normal
PVC insulated Cables catch fire and
Why ACL Fire Zero ? spread it along its length.
Fire Risk is an ever increasing phenomenon challenging the Electrical Engineers But ACL Fire Zero being Non Flammable,
with the continued increase in usage of Electricity in myriad of ways in large
commercial buildings and residential properties. do not spread the fire. Buildings are
An electrical short circuit could occur even if the building is perfectly wired using
safer with ACL Fire Zero.
the best of Designs, best of Materials and best of Installation Teams. This is
due to factors beyond the control of Electrical Engineers such as human error
in wiring, subsequent disturbances by maintenance or repair staff, rodents
attacking the system, disturbances due to earth quakes etc. An Electrical short
circuit leads to release of enormous amount of heat energy in a few seconds
and it leads to fire. Ordinary PVC Cables being flammable, spread such a
fire along its length setting ablaze anything on its path. This is the danger
ACL Fire Zero helps to prevent.
ACL Fire Zero being highly fire retardant offers perfect guarantee that
fire generated due to an electrical short circuit (occurring due to any fault
mentioned earlier) would be immediately extinguished without allowing it to
spread along the Cables. So, what ACL Fire Zero does, can be equated to
what an air bag does in a motor vehicle accident. In the same manner that an
Air Bag cannot prevent an accident but it can protect a passenger in the event
of an accident, ACL Fire Zero cannot guarantee occurrence of a short circuit
but can prevent a building catching fire due to a short circuit. ACL Fire Zero is
an absolute necessity and an added insurance against fires that could originate
due to an electrical short circuit, destroying life and property.
Page7
Insulating material, Sheathing material, Bedding material, Tapes, Fillers etc.
which are used in the manufacture of ACL Fire Zero Cables are completely free
of any halogenated compounds and material which produce acidic gasses or
black smoke when burnt.
Hospitals
Schools
Universities
Recreational places
Hotels (especially for wooden cabanas/cottages)
Supermarkets
Housing complex/apartments
Airports and railway stations
Underground mass rapid transit system/tunnels
Large multi story buildings
Indoor stadiums and cinemas
Page9
(ASTMD 2863) more
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1. Fire retardant property which prevents the flame spread along the cable Gases emitted are free of toxic compounds and metals. ACL Fire Zero is
run. ACL Fire Zero Cables are flame retardant and hence if ignited tend to Tested to BSEN 50267/IEC 60754 to determine acidity of gases emitted after
extinguish itself. it is burnt.
The fire retardant property is ensured by testing ACL Fire Zero using following TEST REQUIRED LEVEL TO BE SATISFIED
three tests.
Acid Gas Generation Less than 0.5%
Flame retardant (Fire Propagation ) Not exceeding 2.5 m above The low smoke feature is measured by the testing the smoke density of
test for bunched cables (IEC-60332-3) the edge of the burner ACL Fire Zero cables in accordance with BS EN 50268/IEC61034.
After 30 seconds After 3 minutes After 6 minutes After 30 seconds After 3 minutes After 6 minutes
Page11
LSHF CABLE CONSTRUTIONS AND THEIR STANDARDS
1
1 3
2 2
5
6
6
7
7
8 8
Page12
ANNEALED STRANDED/COPPER EARTH WIRES LSHF INSULATION ANNEALED FLEXIBLE COPPER EARTH WIRES LSHF INSULATION
450/750 V 450/750 V
RATED 70C RATED 70C
BS EN 50525-3-31
BS EN 50525-3-31
BS 7211/ BS 6004
25 19/1.35 11.35 351.7 16 7/1.70 21.5 1038.4
BS 7211/ BS 6004
16 7/1.70 18.2 636.2 16 7/1.70 19.7 825.7
Page15
ANNEALED FLEXIBLE COPPER CABLES : TWIN, 3 CORE & 4 CORE LSHF ANNEALED FLEXIBLE COPPER CABLES : TWIN, 3 CORE, 4 CORE & 5 CORE LSHF
INSULATION LSHF SHEATHED 300/300 V INSULATION LSHF SHEATHED 300/500 V
RATED 70C RATED 70C
BS EN 50525-3-11 / BS EN 50525-2-11
2.5 3x50/0.25 9.95 171.2
0.75 4x24/0.20 6.4 70.5 4 3X56/0.30 11.45 237.9
0.75 4x24/0.20 7.25 84.5
1 4x32/0.20 7.88 102.6
1.5 4x30/0.25 9.24 144.2
2.5 4x50/0.25 10.89 212.1
4 4X56/0.30 12.54 296.1
0.75 5x24/0.20 8.12 107.6
1 5x32/0.20 8.60 125.7
1.5 5x30/0.25 10.30 183.7
2.5 5x50/0.25 12.12 268.2
4 5X56/0.30 14.14 380.5
Page16
LSHF INSULATED LSHF SHEATHED ENERGY CABLES LSHF INSULATED LSHF SHEATHED ENERGY CABLES
0.6/1 kV COPPER CONDUCTOR | UNARMOURED 0.6/1 kV COPPER CONDUCTOR | UNARMOURED TWO CORE
RATED 70 C SINGLE CORE RATED 70 C
Page17
LSHF INSULATED LSHF SHEATHED ENERGY CABLES LSHF INSULATED LSHF SHEATHED ENERGY CABLES
0.6/1 kV COPPER CONDUCTOR | UNARMOURED THREE CORE 0.6/1 kV COPPER CONDUCTOR | UNARMOURED FOUR CORE
RATED 70 C RATED 70 C
Page19
FR-XLPE INSULATED LSHF SHEATHED ENERGY CABLES FR-XLPE INSULATED LSHF SHEATHED ENERGY CABLES
0.6/1 kV COPPER CONDUCTOR | UNARMOURED THREE CORE 0.6/1 kV COPPER CONDUCTOR | UNARMOURED FOUR CORE
RATED 90 C RATED 90 C
Page20
LSHF INSULATED LSHF SHEATHED ENERGY CABLES LSHF INSULATED LSHF SHEATHED ENERGY CABLES
0.6/1 kV COPPER CONDUCTOR | ALUMINUM WIRE ARMOURED SINGLE CORE 0.6/1 kV COPPER CONDUCTOR | STEEL WIRE ARMOURED TWO CORE
RATED 70 C RATED 70 C
Page21
LSHF INSULATED LSHF SHEATHED ENERGY CABLES LSHF INSULATED LSHF SHEATHED ENERGY CABLES
0.6/1 kV COPPER CONDUCTOR STEEL WIRE ARMOURED THREE CORE 0.6/1 kV COPPER CONDUCTOR | STEEL WIRE ARMOURED FOUR CORE
RATED 70 C RATED 70 C
Page23
FR-XLPE INSULATED LSHF SHEATHED ENERGY CABLES FR-XLPE INSULATED LSHF SHEATHED ENERGY CABLES
0.6/1 kV COPPER CONDUCTOR STEEL WIRE ARMOURED THREE CORE 0.6/1 kV COPPER CONDUCTOR STEEL WIRE ARMOURED FOUR CORE
RATED 90 C RATED 90 C
ACL Fire Survivor Cables have been proven to survive & maintain circuit
integrity in the midst of a fire raging at 950C for a minimum of 3 hours
as per BS Standard 6387. This gives adequate time for fire fighters to
douse the fire and allow those trapped in the fire to escape. Therefore,
ACL Fire survivor cables are absolutely essential in modern day buildings
for fire safety.
Page25
The Institute for Construction Training and Development (ICTAD) in Sri Lanka specifies the fire resistant circuit integrity of cables in accordance with the rating CWZ of
BS 6387: 2013 standard. ACL Fire Survivor cables conform 100% to these Sri Lankan and International Standards.
TEST CERTIFICATIONS AND STANDARDS
ACL Fire Survivor cables are manufactured and tested in accordance with CIRCUIT DIAGRAM OF CIRCUIT INTEGRITY TEST FOR ALL
most stringent circuit integrity tests of BS 6387:2013, and complies with the 3 PROTOCOLS.
following Test Specifications
BS 6387 : 2013 Circuit intergrity test for electric cables under
THE TECHNOLOGY
Cables are subjected to Fire at 650c (+/-40c) for 15 minutes, then at
650 c with water spray for a further 15 minutes.
Page26
Benefits of ACL Fire Survivor cables
Ability to maintain circuit integrity more than three hours at 950C of fire
Ability to maintain circuit integrity in the presence of water
Ability to maintain circuit integrity despite mechanical shocks.
NO Spread of fire
NO Halogen- therefore, no acidic gases
NO Toxic gases
Cu Conductor
NO Black smoke
Fire Barrier
LSHF Insulation
LSHF Sheath
Page27
Fire Survivor Cables
Page30
Fire Survivor Cables
Cu/MGT/ FR XLPE/LSHF - UNARMOURED SINGLE CORE Cu/MGT/ FR XLPE/AWA/LSHF - ARMOURED SINGLE CORE
Page31
Fire Survivor Cables
Page32
Fire Survivor Cables
Page33
SCHEDULE OF INSTALLATION METHODS OF CABLES
FOR DETERMINING CURRENT CARRYING CAPACITY.
Installation Method
Reference method to be used to determine
current carrying capacity
Examples Description
4. Non-sheathed cables in B
conduit on a wooden or masonry wall c
Page34
Installation Method
Reference method to be used to determine
current carrying capacity
Examples Description
Page35
Installation Method
Reference method to be used to determine
current carrying capacity
Examples Description
b Values given for Installation Methods are for a single circuit. Where there is more than one circuit in the trunking the group rating factor given in Adjustment Table -7 is applicable,
irrespective of the presence of an internal barrier or partition.
c- Care is needed where the cable runs vertically and ventilation is restricted The ambient temperature at the top of the vertical section can be much higher.
The inclusion of directly buried cables is satisfactory where the soil thermal resistivity is of the order of 2.5K.m/W. For lower soil resistivities, the current-carrying capacity for directly
buried cables is appreciably higher than for cables in ducts.
*Still under consideration in IEC.
Page36
Single core unarmoured Cu/LSHF insulated Cables with or without LSHF sheath
Ambient temperature: 30C
Conductor operating temperature: 70C
CURRENT-CARRYING CAPACITY (AMPERES) & VOLTAGE DROP
Reference method
A B C D E
Enclosed in conduit in enclosed in conduit on a in free air or on a perforated cable Voltage Drop
clipped direct in free air -Spaced by one
thermally insulating wall or in trunking tray etc horizontal or vertical etc) cable diameter
Conductor wall Touching
Cross sectional
Area 2 cables. 3 or 4 2 cables. 3 or 4 2 cables. 3 or 4 2 cables. 3 cables. 3 cables. 2 cables, single-phasea.c. clipped direct,
single-phase cables. single-phase cables. single-phase cables. single- three-phase three-pha- or d.c.or 3 cables three- on tray or in
ac. or d.c. three-phase ac. or dc. three-phase ac. or dc. flat three-phase phaseac. or ac. flat seac trefoil phase ac flat free air
ac. ac. and touching a.c. flat and dc. flat
touching or 3 or 4 cables,three
trefoil Horizontal Vertical phase a,c,
touching Flat
mm2 (A) (A) (A) (A) (A) (A) (A) (A) (A) (A) (A) (mV/A/m)
50 119 108 151 134 182 167 196 174 167 219 197 0.84
70 151 136 192 171 234 214 251 225 216 281 254 0.6
95 182 164 232 207 284 261 304 275 264 341 311 0.47
120 210 188 269 239 330 303 352 321 308 396 362 0.4
150 240 216 300 262 381 349 406 372 356 456 419 0.34
185 273 245 341 296 436 400 463 427 409 521 480 0.31
240 321 286 400 346 515 472 546 507 485 615 569 0.27
300 367 328 458 394 594 545 629 587 561 709 659 0.25
400 - - 546 467 694 634 754 689 656 852 795 0.24
500 - - 626 533 792 723 868 789 749 982 920 0.23
630 - - 720 611 904 826 1005 905 855 1138 1070 0.22
800 - - - - 1030 943 1086 1020 971 1265 1188 0.22
1000 - - - - 1154 1058 1216 1149 1079 1420 1337 0.21
Page37
Multi core unarmoured Cu/ LSHF insulated LSHF Sheathed Cables
Ambient temperature: 30C
Conductor operating temperature: 70C
CURRENT-CARRYING CAPACITY (AMPERES) & VOLTAGE DROP
Reference method
A B C D
Enclosed in conduit in thermally enclosed in conduit on a wall or in clipped direct free air or on a perforated cable Voltage Drop
insulating wall trunking tray etc, horizontal or vertical
Conductor
Cross sectional 1 two-core 1 three or 1 two-core 1 three or 1 two-core 1 three or four- 1 two-core I three or three or four-core
Area cable, single- four-core cable cable, single- four-core cable, cable, single- core cable. cable, single- four-core cable, cable
phase a.c. or three-phase a.c. phase a.c. or three-phase a.c. phase a.c. or three-phase a.c. phase a.c. or three-phase a.c.
d.c. d.c. d.c. d.c.
three-phase a.c.
mm2 (A) (A) (A) (A) (A) (A) (A) (A) (mV/A/m)
1 11 10 13 11.5 15 13.5 17 14.5 38
1.5 14 13 16.5 15 19.5 17.5 22 18.5 25
2.5 18.5 17.5 23 20 27 24 30 25 15
4 25 23 30 27 36 32 40 34 9.5
6 32 29 38 34 46 41 51 43 6.4
10 43 39 52 46 63 57 70 60 3.8
16 57 52 69 62 85 76 94 80 2.4
25 75 68 90 80 112 96 119 101 1.5
35 92 83 111 99 138 119 148 126 1.1
50 110 99 133 118 168 144 180 153 0.81
70 139 125 168 149 213 184 232 196 0.57
95 167 150 201 179 258 223 282 238 0.43
120 192 172 232 206 299 259 328 276 0.35
150 219 196 258 225 344 299 379 319 0.29
185 248 223 294 255 392 341 434 364 0.25
240 291 261 344 297 461 403 514 430 0.21
300 334 298 394 339 530 464 593 497 0.185
400 - - 470 402 634 557 715 597 0.16
Page38
Single core armoured Cu/LSHF insulated Cables (non magnetic armour)
Ambient temperature: 30C
Conductor operating temperature: 70C
CURRENT-CARRYING CAPACITY (AMPERES) & VOLTAGE DROP
Reference method
C D
Voltage Drop
clipped direct in free air or, on a perforated cable tray, horizontal or vertical
clipped direct, on
Touching Touching Spaced by one cable diameter tray or in free air
Conductor
Cross sectional 2 cables, d.c. 2 cables, single-phase 3 or 4 cables, 3 or 4 cables,
Area 2 cables, 3 or 4 ca- 2 cables, 3 cables. 3 cables. a.c. three-phase a.c. three-phase a.c.
single phase bles, three single phase three phase three phase
a.c. or phase a.c. a.c. or d.c. a.c. flat a.c. trefoil
d.c. flat flat flat Horizontal Vertical Horizontal Vertical Horizontal Vertical Flat and touching
mm2 (A) (A) (A) (A) (A) (A) (A) (A) (A) (A) (A) (mV/A/m)
50 193 179 205 189 181 229 216 229 217 230 212 0.84
70 245 225 259 238 231 294 279 287 272 286 263 0.62
95 296 269 313 285 280 357 340 349 332 338 313 0.5
120 342 309 360 327 324 415 396 401 383 385 357 0.43
150 393 352 413 373 373 479 458 449 429 436 405 0.38
185 447 399 469 422 425 548 525 511 489 490 456 0.34
240 525 465 550 492 501 648 622 593 568 566 528 0.3
300 594 515 624 547 567 748 719 668 640 616 578 0.28
400 687 575 723 618 657 885 851 737 707 674 632 0.26
500 763 622 805 673 731 1035 997 810 777 721 676 0.25
630 843 669 891 728 809 1218 1174 893 856 771 723 0.23
800 919 710 976 777 886 1441 1390 943 905 824 772 0.22
1000 975 737 1041 808 945 1685 1627 1008 967 872 816 0.21
Page39
Multi core armoured Cu/ LSHF insulated LSHF Sheathed Cables
Ambient temperature: 30C
Ground Ambient temperature: 20C
CURRENT-CARRYING CAPACITY (AMPERES) & VOLTAGE DROP Conductor operating temperature: 70C
Reference method
C D E
clipped direct In free air or on a perforated cable tray etc, direct in ground or in ducting in ground in or Voltage Drop
horizontal or vertical around building
Conductor
Cross sectional 1 two-core cable. 1 three or 1 two-core cable. 1 three or 1 two-core cable. 1 three or Three or four-core
Area single-phase a.c. or 1 four-core cable. single-phase a.c. or 1 four-core cable. single-phase a.c. or 1 four-core cable. cable
d.c. three-phase a.c. d.c. three-phase a.c. d.c. three-phase a.c.
three-phase a.c.
mm2 (A) (A) (A) (A) (A) (A) (mV/A/m)
1.5 21 18 22 19 22 18 25
2.5 28 25 31 26 29 24 15
4 38 33 41 35 37 30 9.5
6 49 42 53 45 46 38 6.4
10 67 58 72 62 60 50 3.8
16 89 77 97 83 78 64 2.4
25 118 102 128 110 99 82 1.5
35 145 125 157 135 119 98 1.1
50 175 151 190 163 140 116 0.81
70 222 192 241 207 173 143 0.57
95 269 231 291 251 204 169 0.43
120 310 267 336 290 231 192 0.35
150 356 306 386 332 261 217 0.29
185 405 348 439 378 292 243 0.25
240 476 409 516 445 336 280 0.21
300 547 469 592 510 379 316 0.185
400 621 540 683 590 - - 0.16
Page40
Single core unarmoured Cu/FIRE RETARDANT XLPE insulated Cables with or without LSHF sheath
Ambient temperature: 30C
Conductor operating temperature: 90C
CURRENT-CARRYING CAPACITY (AMPERES) & VOLTAGE DROP
Reference method
A B C D
Enclosed in conduit in enclosed in conduit on a in free air or on a perforated cable Voltage Drop
clipped direct in free air -Spaced by one
thermally insulating wall or in trunking tray etc horizontal or vertical etc) cable diameter
Conductor wall Touching
Cross sectional
Area 2 cables. 3 or 4cables. 2 cables. 3 or 4cables. 2 cables. 3 or 4cables. 2 cables. 3 cables. 3 cables. 2 cables, single-phase clipped direct,
single-phase three-phase single-phase three-phase single-phase three-phase single three-phase three-phase a.c. or d.c.or 3 cables on tray or in
ac. or d.c. ac. ac. or dc. ac. ac. or dc. flat a.c. flat and phase ac. ac. flat ac trefoil three-phase ac flat free air
and touching touching or or dc. flat
trefoil 3or 4 cables,three
Horizontal Vertical phase a,c,
touching flat
mm2 (A) (A) (A) (A) (A) (A) (A) (A) (A) (A) (A) mV/A/m
50 158 141 198 175 228 209 242 216 207 275 246 0.87
70 200 179 253 222 293 268 310 279 268 353 318 0.62
95 241 216 306 269 355 326 377 342 328 430 389 0.46
120 278 249 354 312 413 379 437 400 383 500 454 0.38
150 318 285 393 342 476 436 504 464 444 577 527 0.32
185 362 324 449 384 545 500 575 533 510 661 605 0.28
240 424 380 528 450 644 590 679 634 607 781 719 0.24
300 486 435 603 514 743 681 783 736 703 902 833 0.21
400 - - 683 584 868 793 940 868 823 1085 1008 0.195
500 - - 783 666 990 904 1083 998 946 1253 1169 0.18
630 - - 900 764 1130 1033 1254 1151 1088 1454 1362 0.17
800 - - - - 1288 1179 1358 1275 1214 1581 1485 0.165
1000 - - - - 1443 1323 1520 1436 1349 1775 1671 0.165
Page41
Multi core unarmoured Cu/Fire Retardant XLPE insulated LSHF Sheathed Cables
Ambient temperature: 30C
Conductor operating temperature: 90C
CURRENT-CARRYING CAPACITY (A) & VOLTAGE DROP ( mV/A/m )
Reference method
A B C D Voltage Drop
(per ampere per
Enclosed in conduit in thermally enclosed in conduit on a wall or in clipped direct free air or on a perforated cable
meter)
insulating wall trunking tray etc, horizontal or vertical
Conductor
Cross sectional 1 two-core 1 three or 1 two-core 1 three or four- 1 two-core 1 three or four- 1 two-core 1 three or four- three or four-core
Area cable, single- four-core cable cable, single- core cable, cable, single- core cable. cable, single- core cable, cable
phase a.c. or three-phase a.c. phase a.c. or three-phase a.c. phase a.c. or three-phase a.c. phase a.c. or three-phase a.c.
d.c. d.c. d.c. d.c.
three-phase a.c.
mm2 (A) (A) (A) (A) (A) (A) (A) (A) mV/A/m
1 14.5 13 17 15 19 17 21 18 40
1.5 18.5 16.5 22 19.5 24 22 26 23 27
2.5 25 22 30 26 33 30 36 32 16
4 33 30 40 35 45 40 49 42 10
6 42 38 51 44 58 52 63 54 6.8
10 57 51 69 60 80 71 86 75 4
16 76 68 91 80 107 96 115 100 2.5
25 99 89 119 105 138 119 149 127 1.65
35 121 109 146 128 171 147 185 158 1.15
50 145 130 175 154 209 179 225 192 0.87
70 183 164 221 194 269 229 289 246 0.6
95 220 197 265 233 328 278 352 298 0.45
120 253 227 305 268 382 322 410 346 0.37
150 290 259 334 300 441 371 473 399 0.3
185 329 295 384 340 506 424 542 456 0.26
240 386 346 459 398 599 500 641 538 0.21
300 442 396 532 455 693 576 741 621 0.185
400 - - 625 536 803 667 865 741 0.165
Page42
Single core armoured Cu/Fire Retardant XLPE insulated Cables (non magnetic armour)
Ambient temperature: 30C
Conductor operating temperature: 90C
CURRENT-CARRYING CAPACITY (A) & VOLTAGE DROP ( mV/A/m )
Reference method
C D Voltage Drop (per
ampere per meter)
clipped direct in free air or, on a perforated cable tray, horizontal or vertical
Page43
Multicore armoured Cu/Fire Retardant XLPE insulated & LSHF Sheathed Cables
Ambient temperature: 30C
Ground Ambient temperature: 20C
CURRENT-CARRYING CAPACITY (A) & VOLTAGE DROP ( mV/A/m Conductor operating temperature: 90C
Reference method
C D E
Voltage Drop
clipped direct in free air or on a perforated cable tray etc, direct in ground or in ducting in ground in
horizontal or vertical or around buildings
Conductor
Cross sectional
Area 1 two-core cable. 1 three or 1 four-core 1 two-core cable. 1 three or 1 four-core 1 two-core cable. 1 three or 1 four-core
Three or four-core
single-phase cable. single-phase cable. single-phase cable.
cable
a.c. or d.c. three-phase a.c. a.c. or d.c. three-phase a.c. a.c. or d.c. three-phase a.c.
three-phase a.c.
Correction factors for ambient temperature where protection is against short - circuit
AMBIENT TEMPERATURE (C )
Operating
Type of Insulation
Temperature
25 30 35 40 45 50 55 60 65 70 75 80
Thermosetting ( XLPE) 90C 1.02 1 0.96 0.91 0.87 0.82 0.76 0.71 0.65 0.58 0.5 0.41
ADJUSTMENT TABLE - 2
XLPE - 90 1.07 1.04 1 0.96 0.93 0.89 0.85 0.8 0.76 0.71 0.65 0.6 0.53 0.46 0.38
Page45
ADJUSTMENT TABLE - 3
Thermoplastic (LSHF) 70C 1.03 1 0.94 0.87 0.79 0.71 0.61 0.5
ADJUSTMENT TABLE - 4
LSHF - 70 1.1 1.05 1 0.95 0.89 0.84 0.77 0.71 0.63 0.55 0.45
Page46
ADJUSTMENT TABLE - 5
NOTE 1: The rating, factors given have been averaged over the range of NOTE 2: Where more precise values are required they may be calculated by
conductor sizes and lypes of installation included in the relevant tables in this methods given in BS7769 (BS IEC 60287)
appendix. The overall accuracy of rating factors is within 5%. NOTE 3: The rating factors are applicable to ducts buried at depths of up to 0.8m.
ADJUSTMENT TABLE - 6
Rating factors of depth of burial for depths of laying other than 0.7 m for direct buried cables and cables in buried ducts
Rating factors for more than one circuit, cables buried directly in the ground
Multicore Cables
NOTE 1: Values given apply to an installation depth of 0.7 in and a soil thermal resistivity ol 2.5 K.m/W.
NOTE 2: In case of a thermal resistivity lower than 2.5 K.m/W the rating factors can, in general be increased and
can be calculated by the methods given in BS 7769 (BS IEC 60287).
Page48
ADJUSTMENT TABLE - 8
Rating factors for more than one circuit, cables in ducts buried in the ground
Multicore Cables
NOTE 1: Values given apply to an installation depth of 0.7 m and a soil thermal resistivity of 2.5 K..m/W.
NOTE 2: In case of a thermal resistivity lower than 2.5 K.m/W the rating factors can, in general, be increased and
can he calculated by the methods given in BS 7769 (BS I EC 60287).
Page49
ADJUSTMENT TABLE - 9
Rating factors for one circuit or one multicore cable or for a group of circuits, or a group of multicore cables
Arrangement
(cables touching) 1 2 3 4 5 6 7 8 9 12 16 20
Bunched in air, on a
surface, embedded or 1 0.8 0.7 0.65 0.6 0.57 0.54 0.52 0.5 0.45 0.41 0.38
enclosed
Single layer on wall or 1 0.85 0.79 0.75 0.73 0.72 0.72 0.71 0.7 0.7 0.7 0.7
floor
Single layer mullicore
on a perforated
1 0.88 0.82 0.77 0.75 0.73 0.73 0.72 0.72 0.72 0.72 0.72
horizontal or vertical
cable tray system
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ACL CABLES PLC,
#60, Rodney Street, Colombo 08, Sri Lanka.
Telephone : 94-11-7608300
Fax : 94-11-2699503
e-mail (Marketing) : marketing@acl.lk
(Export) : daya@acl.lk
Web site : www.acl.lk
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