The high - aunilec.57.pagesperso-orange.fraunilec.57.pagesperso-orange.fr/nicd-319.pdf · The high performance battery for engine start and UPS XHP Plastic Range Reliability is the

The highperformance

battery forengine start

and UPS

XHP Plastic Range

Reliability is the crucial function inall standby power systems asfailure could endanger life. Anickel-cadmium battery is one themost reliable sources of standbypower available today. Alcad’sexpertise in designing, developingand manufacturing these batteriesfor a wide variety of harshenvironments guarantees that youget a battery that you can trust.Using the well proven sinteredpositive and plastic bondednegative plate construction, XHPbatteries offer the best solution forboth engine start and UPSapplications.

The key features of reliability,mechanical/electrical robustness,and rapid discharge performanceare particularly suited to criticalengine start applications. With ultralow maintenance and long life,XHP can also provide costeffective and guaranteeduninterrupted on-line power.

3

The highperformance

features

Advanced technology

No more “Sudden Death”The electrochemical advantages ofAlcad’s nickel-cadmium XHPbatteries ensure absolutely safeoperation without risks of “suddendeath” or complete loss of powerwhich can so seriously handicaplead acid batteries.

Long lifetimeA life of greater than 20 years canreasonably be expected, which,depending on environmentalconditions, can represent 5 or 10times the lifespan of a lead acidbattery. This could result inavoiding the need for anyreplacement during the lifetime ofthe equipment it is powering.

Ultra low maintenanceXHP batteries only require topping-up every 10 years when correctlycharged. This simple and costeffective upkeep proves extremelyadvantageous for UPS users whenweighed against the frequentreplacements and resultinginterruptions experienced with leadacid.

Wide operating temperaturerangeXHP batteries maintain their highperformance levels under the mostrigorous climatic and temperatureconditions: -20˚C to +60˚C.

A voltage window for UPSOptimising performance gainedfrom its advanced nickel-cadmiumelectrode technology, the XHPbattery is able to offer a highpower performance with a narrowvoltage window ideally suited toUPS requirements.

Highly tolerant of electricalabuseUnlike lead acid batteries, nickel-cadmium can tolerate high ripplecurrents, high overcharge currentsand voltage reversal, and remainsunaffected by deep or completedischarge.

Trouble free storageXHP batteries can be stored atextreme temperatures of -40˚C to+60˚C and for over 2 years indischarged condition. Thiscompares with lead acid whichcould be stored from -10˚C to+40˚C but needs to be fullycharged and recharged at leastevery six months.

High discharge rateThis battery is particularly wellsuited to repetitive high dischargerates as required for enginestarting. XHP batteries maintain asatisfactory starting performance,even when partly discharged,throughout their 20 year servicelife.

CommissioningIt is often possible to dispense witha special commissioning charge –a significant advantage of the XHPsintered/PBE construction.

4

XHP PLASTIC RANGETechnical Characteristics (20 ˚C ± 5˚C)

ChargingThese cells can be charged by all normal methods:

● Taper

● Constant current

● Constant voltage

● Pulse

The cells may be operated satisfactorily in any state ofcharge. For operating conditions other than fullycharged, consult the company.

CapacityThe rated capacity (C5) of a cell is the capacityavailable in ampere hours (Ah) at the 5 hour dischargerate to an end voltage of 1.00 volt per cell.

Nominal Discharge VoltageThe nominal discharge voltage is 1.2 volts per cell.

1. Constant Current ChargingStandard charge 0.2 x C5 amperes for 8 hours.

2. Constant voltage charging(No current limit necessary)

2.1 With boost

Maintenance floatvoltage: 1.40 ± 0.01 V

Boost voltage: 1.45 V ± 1%

2.2 Without boostfloat voltage: 1.41 V ± 0.01 V

3. Cell data3.1 D.C. internal resistance: 43 x 1/C5 milliohms

3.2 Short circuit current:1.8 x Cell discharge current at 1 Sec to 0.65 V.

Time to reach state of charge at charging voltages for fully discharged cells. Available current 0.2 x C5

5

XHP PLASTIC RANGECell capacities and dimensions

These high performances cells are all supplied as single cells.

Cell Capacity Cell Dimensions Approx Volume ofType C5AH Length Width Height(Max) weight electrolyte

IEC 623 (L) (W) (H) (Kg) abovemm mm mm plates

(cc)XHP 11 11 46.5 86 196 1.0 66

XHP 16 16 46.5 86 276 1.6 160

XHP 21 21 46.5 86 276 1.6 160

XHP 24 24 46.5 86 276 1.7 160

XHP 28 28 61 86 276 2.0 215

XHP 36 36 86 86 276 2.7 325

XHP 45 45 86 86 276 2.9 315

XHP 52 52 86 86 276 2.9 315

XHP 60 60 86 86 308 3.4 405

XHP 70 70 86 86 308 3.4 405

XHP 80 80 86 86 308 3.3 385

XHP 90 90 78 166 340 5.8 750

XHP 100 100 78 166 340 6.1 735

XHP 115 115 78 166 340 6.3 720

XHP 130 130 87 166 340 7.0 815

XHP 150 150 103 166 340 8.2 990

XHP 170 170 117 166 340 9.8 1135

XHP 190 190 117 166 340 10.1 1115

XHP 220 220 202 166 340 14.7 2155

XHP 250 250 202 166 340 15.3 2120

XHP 280 280 202 166 340 15.7 2080

XHP 300 300 202 166 340 16.1 2060

XHP 320 320 202 166 340 16.4 2030

XHP 21, 28, 36 and 47 also available on request in 196mm height for limited space applications, though withmodified performance. Alcad XHP batteries fulfil all requirements specified by IEC publication 623.

TerminalsXHP 11 - XHP 80 M10XHP 90 - XHP 150 M12XHP 170 - XHP 320 2 x M12

6

XHP PLASTIC RANGEEngine Starting Performances: Fully Charged Cells

Amperes on discharge to Amperes on discharge to0.65 Volts per Cell after 1 Sec 0.85 Volts per Cell after 30 Sec

Cell Capacity Temperature Temperature NFPA*Type (Ah) +20˚C 0˚C -20˚C +20˚C 0˚C -20˚C

XHP 11 11 225 203 137 124 112 76 92

XHP 16 16 328 295 200 181 163 110 133

XHP 21 21 430 387 262 237 213 145 175

XHP 24 24 492 443 300 271 244 165 200

XHP 28 28 574 517 350 316 284 193 233

XHP 36 36 738 664 450 407 366 248 300

XHP 45 45 922 830 562 509 458 310 375

XHP 52 52 1070 963 653 588 529 359 433

XHP 60 60 1010 909 616 577 519 352 433

XHP 70 70 1170 1050 714 673 606 411 506

XHP 80 80 1340 1210 817 769 692 469 578

XHP 90 90 1790 1610 1090 997 897 608 681

XHP 100 100 1990 1790 1210 1110 1000 677 756

XHP 115 115 2230 2010 1360 1250 1130 763 850

XHP 130 130 2470 2220 1510 1390 1250 848 957

XHP 150 150 2850 2570 1740 1600 1440 976 1100

XHP 170 170 3380 3040 2060 1880 1690 1150 1290

XHP 190 190 3780 3400 2310 2100 1890 1280 1440

XHP 220 220 4270 3840 2610 2390 2150 1460 1620

XHP 250 250 4850 4370 2960 2720 2450 1660 1840

XHP 280 280 5330 4800 3250 3000 2700 1830 2060

XHP 300 300 5710 5140 3480 3210 2890 1960 2210

XHP 320 320 5930 5340 3620 3330 3000 2030 2290

*NFPA is the cranking current at 4.5˚C, 3 min to 0.85 volts/cell and is equivalent to the National Fire ProtectionAssociation regulations for fire pumps.

7

XHP PLASTIC RANGEEngine Starting Performances: 10% Discharged Cells

Amperes on discharge to Amperes on discharge to0.65 Volts per Cell after 1 Sec 0.85 Volts per Cell after 30 Sec

Cell Capacity Temperature TemperatureType (Ah) +20˚C 0˚C -20˚C +20˚C 0˚C -20˚C

XHP 11 11 214 192 130 118 106 72

XHP 16 16 312 280 190 172 155 105

XHP 21 21 409 368 249 225 203 137

XHP 24 24 467 421 285 257 232 157

XHP 28 28 545 491 333 300 270 183

XHP 36 36 701 631 428 387 348 236

XHP 45 45 876 788 534 484 435 295

XHP 52 52 1020 915 620 559 503 341

XHP 60 60 960 864 585 548 493 334

XHP 70 70 1110 1000 678 639 575 390

XHP 80 80 1270 1150 777 731 657 446

XHP 90 90 1700 1530 1040 947 852 578

XHP 100 100 1890 1700 1150 1060 949 643

XHP 115 115 2120 1910 1290 1190 1070 724

XHP 130 130 2350 2110 1430 1320 1190 806

XHP 150 150 2710 2440 1650 1520 1370 927

XHP 170 170 3210 2890 1960 1790 1610 1090

XHP 190 190 3590 3230 2190 2000 1800 1220

XHP 220 220 4060 3650 2470 2270 2040 1390

XHP 250 250 4610 4150 2810 2580 2330 1580

XHP 280 280 5060 4560 3090 2850 2570 1740

XHP 300 300 5430 4880 3310 3050 2750 1860

XHP 320 320 5630 5070 3440 3160 2850 1930

Because of the superior recharge characteristics of the sintered/plastic bondednickel-cadmium cell it is not necessary to use the 25% discharged figuresrecommended for other nickel-cadmium plate structures when allowing for cellswhich are not fully recharged

8

XHP PLASTIC RANGEConstant Current Performance (20˚C ± 5˚C)Discharge data is for fully charged cells after 1 hour open circuitand allowing for voltage losses associated with connectors.

Amperes on discharge to 1.00 Volt per Cell

Cell Cap 1 5 30 60 3 5 10 15 30 60 90 3 5Type (Ah) Sec Sec Sec Sec Min Min Min Min Min Min Min Hour Hour

XHP 11 11 113 102 83.1 75.2 65.7 60.0 48.7 37.4 20.6 10.6 7.2 3.6 2.2

XHP 16 16 165 149 121 110 95.8 87.3 70.8 54.5 30.0 15.4 10.4 5.3 3.2

XHP 21 21 216 196 159 144 126 115 92.9 71.4 39.4 20.3 13.7 7.0 4.2

XHP 24 24 247 224 182 164 144 131 106 81.6 45.0 23.1 15.7 8.0 4.8

XHP 28 28 289 262 212 192 168 153 124 95.2 52.5 27.0 18.3 9.3 5.6

XHP 36 36 373 335 273 246 215 197 159 122 67.5 34.7 23.5 11.9 7.2

XHP 45 45 465 419 341 308 269 246 199 153 84.4 43.4 29.4 14.9 9.0

XHP 52 52 538 484 393 356 311 284 230 177 97.5 50.1 33.9 17.2 10.4

XHP 60 60 503 457 383 350 305 284 242 197 112 57.9 39.2 19.9 12.0

XHP 70 70 588 533 447 409 356 332 282 230 130 67.5 45.7 23.2 14.0

XHP 80 80 672 610 511 467 407 379 322 263 149 77.1 52.2 26.5 16.0

XHP 90 90 903 832 679 601 487 435 345 280 165 86.8 58.7 29.8 18.0

XHP 100 100 1000 924 754 667 541 483 383 312 183 96.4 65.3 33.1 20.0

XHP 115 115 1130 1050 852 757 612 548 437 356 210 111 75.1 38.1 23.0

XHP 130 130 1240 1150 944 838 681 619 492 401 237 125 84.9 43.1 26.0

XHP 150 150 1430 1330 1090 967 785 705 563 462 274 145 97.9 49.7 30.0

XHP 170 170 1700 1570 1280 1130 919 821 651 530 311 164 111 56.3 34.0

XHP 190 190 1910 1760 1430 1270 1030 918 728 592 347 183 124 63.0 38.0

XHP 220 220 2160 2000 1630 1450 1170 1050 837 683 402 212 144 72.9 44.0

XHP 250 250 2450 2270 1850 1640 1330 1190 947 776 457 241 163 82.8 50.0

XHP 280 280 2680 2480 2030 1800 1470 1320 1060 864 511 270 183 92.8 56.0

XHP 300 300 2870 2660 2180 1930 1570 1410 1130 924 548 289 196 99.4 60.0

XHP 320 320 2990 2810 2290 2040 1660 1490 1200 982 585 309 209 106 64.0

9


Amperes on discharge to 1.05 Volts per Cell


XHP 11 11 100 89.5 72.4 64.3 55.4 51.1 42.6 35.2 20.2 10.5 7.1 3.6 2.2

XHP 16 16 145 130 105 93.5 80.6 74.3 61.9 51.1 29.4 15.2 10.3 5.3 3.2

XHP 21 21 190 171 138 123 106 97.6 81.2 67.1 38.5 20.0 13.5 6.9 4.2

XHP 24 24 217 195 158 140 121 111 92.9 76.7 44.0 22.9 15.5 7.9 4.8

XHP 28 28 253 228 184 164 141 130 108 89.4 51.4 26.7 18.1 9.2 5.6

XHP 36 36 326 293 237 210 181 167 139 115 66.1 34.3 23.2 11.8 7.1

XHP 45 45 407 366 296 263 227 209 174 144 82.6 42.9 29.0 14.8 8.9

XHP 52 52 471 423 342 304 262 242 201 166 95.4 49.5 33.5 17.1 10.3

XHP 60 60 434 396 332 299 256 239 208 180 109 57.1 38.7 19.7 11.9

XHP 70 70 507 463 387 349 299 279 242 210 127 66.7 45.2 23.0 13.9

XHP 80 80 579 529 442 399 342 319 277 240 145 76.2 51.6 26.3 15.9

XHP 90 90 793 728 592 518 412 369 298 250 158 85.7 58.1 29.6 17.9

XHP 100 100 880 809 658 576 458 410 331 278 175 95.2 64.5 32.9 19.8

XHP 115 115 983 906 742 646 516 484 376 316 201 110 74.2 37.8 22.8

XHP 130 130 1100 1010 823 722 573 516 421 357 227 124 83.9 42.8 25.8

XHP 150 150 1260 1160 948 832 662 595 486 410 262 143 96.8 49.3 29.8

XHP 170 170 1500 1370 1120 979 779 696 563 472 298 162 110 55.9 33.7

XHP 190 190 1670 1540 1250 1090 870 778 629 528 333 181 123 62.5 37.7

XHP 220 220 1880 1730 1420 1240 987 887 719 604 385 210 142 72.4 43.7

XHP 250 250 2140 1970 1610 1400 1120 1010 817 687 437 238 161 82.2 49.6

XHP 280 280 2360 2170 1770 1550 1240 1110 907 765 489 267 181 92.1 55.6

XHP 300 300 2530 2320 1900 1660 1320 1190 972 820 524 286 194 98.7 59.5

XHP 320 320 2640 2460 2000 1760 1400 1260 1030 870 557 305 206 105 63.5

10




XHP 11 11 84.9 76.2 61.5 53.7 44.7 41.5 35.4 30.3 19.5 10.0 6.9 3.5 2.2

XHP 16 16 123 111 89.4 78.0 65.0 60.4 51.6 44.1 28.4 14.5 10.0 5.2 3.1

XHP 21 21 162 145 117 102 85.3 79.2 67.7 57.8 37.2 19.1 13.2 6.8 4.1

XHP 24 24 185 166 134 117 97.5 90.5 77.3 66.1 42.5 21.8 15.0 7.7 4.7

XHP 28 28 216 194 156 137 114 106 90.2 77.1 49.6 25.5 17.6 9.0 5.5

XHP 36 36 278 249 201 176 146 136 116 99.2 63.8 32.7 22.6 11.6 7.1

XHP 45 45 347 312 251 219 183 170 145 124 79.8 40.9 28.2 14.5 8.8

XHP 52 52 401 360 291 254 211 196 168 143 92.2 47.3 32.6 16.7 10.2

XHP 60 60 369 336 279 249 205 193 170 151 103 54.5 37.6 19.3 11.8

XHP 70 70 431 392 326 291 239 225 198 176 120 63.6 43.9 22.5 13.7

XHP 80 80 492 447 372 332 273 257 226 201 137 72.7 50.2 25.8 15.7

XHP 90 90 670 620 503 437 337 299 244 208 143 81.8 56.4 29.0 17.6

XHP 100 100 744 689 558 486 375 332 271 231 159 90.9 62.7 32.2 19.6

XHP 115 115 833 777 628 548 420 373 307 263 181 105 72.1 37.0 22.5

XHP 130 130 927 860 702 608 467 418 344 295 204 118 81.5 41.9 25.5

XHP 150 150 1070 991 810 701 539 483 397 341 236 136 94.0 48.3 29.4

XHP 170 170 1270 1170 950 824 637 564 461 393 270 155 107 54.8 33.3

XHP 190 190 1410 1310 1060 922 712 631 515 439 302 173 119 61.2 37.3

XHP 220 220 1590 1490 1200 1050 803 714 587 502 347 200 138 70.9 43.1

XHP 250 250 1810 1690 1370 1190 912 812 667 571 394 227 157 80.5 49.0

XHP 280 280 2000 1850 1510 1310 1010 902 741 637 441 255 176 90.2 54.9

XHP 300 300 2140 1980 1620 1400 1080 966 794 682 472 273 188 96.6 58.8

XHP 320 320 2250 2090 1710 1480 1130 1020 842 724 502 291 201 103 62.7

11




XHP 11 11 73.3 65.7 52.4 45.5 36.7 33.6 29.0 25.4 17.8 9.2 6.4 3.4 2.1

XHP 16 16 107 95.6 76.2 66.2 53.4 48.9 42.2 36.9 25.9 13.3 9.4 4.9 3.1

XHP 21 21 140 125 100 86.8 70.1 64.1 55.4 48.5 34.0 17.5 12.3 6.5 4.1

XHP 24 24 160 143 114 99.3 80.1 73.3 63.3 55.4 38.8 20.0 14.0 7.4 4.6

XHP 28 28 187 167 133 116 93.4 85.5 73.8 64.7 45.3 23.3 16.4 8.6 5.4

XHP 36 36 240 215 172 149 120 110 94.9 83.1 58.3 30.0 21.1 11.1 6.9

XHP 45 45 300 269 214 186 150 137 119 104 72.8 37.5 26.3 13.9 8.7

XHP 52 52 347 311 248 215 173 159 137 120 84.1 43.3 30.4 16.0 10.0

XHP 60 60 316 288 237 209 170 154 137 123 91.5 50.0 35.1 18.5 11.6

XHP 70 70 369 336 277 244 198 179 160 144 107 58.3 40.9 21.6 13.5

XHP 80 80 421 384 316 278 226 205 183 164 122 66.7 46.8 24.7 15.4

XHP 90 90 576 535 434 370 276 242 197 169 120 75.0 52.6 27.8 17.4

XHP 100 100 639 595 481 412 307 269 219 188 133 83.3 58.5 30.9 19.3

XHP 115 115 728 676 542 464 347 303 246 213 152 95.8 67.3 35.5 22.2

XHP 130 130 816 741 603 518 388 338 277 239 171 108 76.0 40.1 25.1

XHP 150 150 942 855 696 598 448 390 319 275 197 125 87.7 46.3 29.0

XHP 170 170 1090 1010 817 700 522 457 372 319 226 142 99.4 52.5 32.8

XHP 190 190 1220 1130 913 782 583 511 416 356 253 158 111 58.6 36.7

XHP 220 220 1390 1290 1040 887 665 579 471 407 290 183 129 67.9 42.5

XHP 250 250 1580 1470 1180 1010 755 658 535 463 330 208 146 77.2 48.3

XHP 280 280 1760 1600 1300 1120 836 728 595 513 368 233 164 86.4 54.1

XHP 300 300 1880 1710 1390 1200 896 780 638 550 394 250 175 92.6 57.9

XHP 320 320 1980 1800 1450 1250 947 821 675 584 419 267 187 98.8 61.8

12

XHP PLASTIC RANGEConstant Power Performance (20˚C ± 5˚C)Discharge data is for float charged cells allowing for voltage losses associated with connectors.

Watts on discharge to 1.00 Volt per Cell

Cell Capacity 5 10 15 20 30 60Type (Ah) Min Min Min Min Min Min

XHP 11 11 52.8 46.2 37.7 31.4 22.7 12.9

XHP 16 16 76.8 67.2 55.0 45.6 33.0 18.8

XHP 21 21 101 88.1 72.1 59.9 43.3 24.7

XHP 24 24 115 101 82.4 68.5 49.5 28.2

XHP 28 28 135 118 96.1 79.8 57.8 32.9

XHP 36 36 173 151 124 103 74.3 42.4

XHP 45 45 216 189 154 128 92.8 52.9

XHP 52 52 250 218 179 148 107 61.2

XHP 60 60 250 230 199 169 123 70.6

XHP 70 70 292 268 232 197 143 82.4

XHP 80 80 334 305 265 225 164 94.1

XHP 90 90 383 327 282 244 182 106

XHP 100 100 425 363 315 271 201 118

XHP 115 115 482 415 359 311 231 135

XHP 130 130 545 467 405 351 261 153

XHP 150 150 620 534 466 404 301 176

XHP 170 170 722 618 535 461 342 200

XHP 190 190 808 691 597 515 382 224

XHP 220 220 922 794 689 595 442 259

XHP 250 250 1048 898 783 676 502 294

XHP 280 280 1160 1000 872 755 563 329

XHP 300 300 1240 1070 932 808 603 353

XHP 320 320 1310 1140 990 859 643 376

13


Watts on discharge to 1.05 Volts per Cell


XHP 11 11 46.1 41.0 35.4 30.1 22.8 12.8

XHP 16 16 67.1 59.6 51.3 43.8 33.2 18.6

XHP 21 21 88.1 78.2 67.4 57.5 43.5 24.4

XHP 24 24 101 89.4 77.0 65.7 49.8 27.9

XHP 28 28 117 104 89.8 76.7 58.1 32.5

XHP 36 36 151 134 116 98.6 74.6 41.8

XHP 45 45 189 168 145 123 93.3 52.3

XHP 52 52 218 194 167 142 108 60.4

XHP 60 60 216 200 181 158 123 69.7

XHP 70 70 252 233 211 185 144 81.3

XHP 80 80 288 267 241 211 164 93.0

XHP 90 90 333 287 251 224 179 105

XHP 100 100 370 319 279 248 198 116

XHP 115 115 419 362 317 285 227 134

XHP 130 130 466 405 359 320 257 151

XHP 150 150 537 468 412 369 296 174

XHP 170 170 628 542 474 423 337 198

XHP 190 190 703 606 530 472 376 221

XHP 220 220 801 692 607 545 435 256

XHP 250 250 910 787 690 620 494 290

XHP 280 280 1000 874 769 689 553 325

XHP 300 300 1070 936 824 739 592 349

XHP 320 320 1140 991 873 786 630 372

14


Watts on discharge to 1.10 Volts per Cell


XHP 11 11 38.3 33.2 29.0 25.5 20.3 12.1

XHP 16 16 55.8 48.3 42.1 37.0 29.5 17.6

XHP 21 21 73.2 63.4 55.3 48.6 38.7 23.1

XHP 24 24 83.7 72.4 63.2 55.5 44.2 26.4

XHP 28 28 97.6 84.5 73.8 64.8 51.6 30.7

XHP 36 36 125 109 94.8 83.3 66.3 39.5

XHP 45 45 157 136 119 104 82.9 49.4

XHP 52 52 181 157 137 120 95.8 57.1

XHP 60 60 178 159 144 130 107 65.9

XHP 70 70 208 185 168 152 125 76.9

XHP 80 80 237 212 192 173 143 87.8

XHP 90 90 276 229 199 177 149 98.8

XHP 100 100 307 254 221 196 165 110

XHP 115 115 345 287 251 224 189 126

XHP 130 130 386 322 283 252 212 143

XHP 150 150 446 372 326 291 245 165

XHP 170 170 521 431 376 334 281 187

XHP 190 190 583 482 420 373 314 209

XHP 220 220 660 549 480 428 361 242

XHP 250 250 750 624 546 486 410 275

XHP 280 280 833 694 609 542 458 307

XHP 300 300 893 744 652 581 491 329

XHP 320 320 945 789 692 617 521 351

15

XHP PLASTIC RANGEUPS Battery Calculation

1. Determine the battery powerTaking into consideration the load power factor andinverter efficiency, the inverter requires a DCconstant power from the battery of 45 kW.

2. Determine the number of cellsmaximum DC voltagecharging voltage/cell

3. Determine the minimum allowablevoltage per cell (the end voltage)minimum DC voltagenumber of cells

4. Determine the battery power per cellDC power required

number of cells

5. Select the cell sizeBy reference to the constant power performancetable relating to the end voltage defined in(3): 1.00 V/Cell and to 10 minutes dischargeXHP 70 gives an available performance of 268 W.

6. Battery Definition

A 50 kVA UPS System must supply a load for a standby period of 10 minutes.The inverter DC voltage window is 264 V – 187 V, the charging voltage1.42 V/Cell and the float charge 1.37 V/Cell. Battery operation at 20˚C.

264 V1.42 V

= 186 cells=

187 V186

= 1.00 V/cell=

45000 W186

= 241.9 W=

186 Cells XHP 70

Engine Start Battery CalculationA battery is required to give 3 x 10 second startattempts at 0˚C on a Cummins NTA 855 G3 dieselengine.

1. Determine required Battery Current and Voltage

Engine data gives breakaway current of 1020 A(1 sec) and cranking current of 565 A(3 x 10 secs) at 24 V (nominal).

2. Select the cell size

Refer to 10% discharged performance tables (thisdata assumes, worst case, that on float charge thecell has not recovered to 100% charged). XHP 80gives 1150 A for 1 sec at 0˚C to 0.65 V/Cell and657 A for 30 secs at 0˚C to 0.85 V/Cell.

3. Determine the number of cells

(Assuming Static Charger)nominal DC voltagenominal cell voltage

Therefore:4. Battery Definition

5. Alternative number of cells

(Assuming only Rotary Charger)DC voltage available from regulated RotaryCharger is likely to be set at 27.24 V (this isdetermined by 12 Lead Acid Cells (nominal 24 V)charged at 12 x 2.27 V). Then

Max DC voltageCharging voltage/cell

Therefore:6. Battery Definition

24 V1.2 V

= 20 cells=

20 XHP 80

27.24 V1.42 V

= 19 cells=

19 XHP 80

16

XHP PLASTIC RANGEUseful Performance Curves

Typical discharge at +20˚C(Fully charged, rest 1 hour)

Typical short duration peak discharge at +20˚C

17

Typical Performance derating factors versus temperature(Floating applications)

Comparison Ni-Cd and lead acid – low temperature(Typical influence of temperature on cell capacity)

18

19

WorldwideApplications

This product range has beendesigned to meet the most

stringent environmental andperformance specifications, with

utmost reliability providing reliablepower over a very long life, with

only a minimum maintenancerequirement.

XHP batteries are particularlysuited to UPS and engine start

applications in your Hospital, yourTraffic Control System, your

Communications Station, yourProcess Plant or Off-shore Rig.

Worldwideon-the-spot service

Alcad’s genuinely global coveragemeans that the international

network of skills and resources isfully available at all times on each

continent and in eachstrategic area.

As our customer, you can dependon a full range of servicing and

assistance wherever andwhenever you need them. Alcadbrings the same high degree of

reliability to worldwide service asthe XHP range brings to your

power requirements.

QUALITY APPROVALAlcad Limited offers

products manufacturedwithin a Quality

Management Systemformally recognised as

meeting the requirements ofBS 5750: Pt 1: (1987) and

the equivalent InternationalStandards ISO 9001 and

EN 29001. The approval issubject to regular

monitoring by BureauVeritas to ensure standards

in design, manufacture,installation and servicing ofNickel-Cadmium Cells and

Batteries are maintained.

Alcad Limited

SwedenTelephone: +46 491 68 100Facsimile: +46 491 68 110

Alcad Sales Offices

United KingdomTelephone: +44 20 8 498 1183Facsimile: +44 20 8 498 1113

Middle EastTelephone: +357 5 343 519Facsimile: +357 5 343 542

SingaporeTelephone: +65 748 4486Facsimile: +65 748 4639

USATelephone: +1 203 234 8333Facsimile: +1 203 234 8255

Documents

The high - aunilec.57.pagesperso-orange.fraunilec.57.pagesperso-orange.fr/nicd-319.pdf · The high performance battery for engine start and UPS XHP Plastic Range Reliability is the