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Indian locomotive class WAG-7

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from IR by a target date of 1990. The WAG-5 though were great successes, had become underpowered to meet the growing demands of the Indian Railways. So in early 1990s IR decided to look for a successor the WAG-5 class. The required specification was of a 5000 horsepower locomotive.
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The WAG-7 is one of the most successful locomotives of Indian Railways, serving freight trains since its introduction in 1990. Even though with the advent of new 3-phase locomotives like WAG-9 and
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Slip control, Main overload relay, Over voltage relay, No volt relay, Earth fault relay, Low pressure governor, Vacuum Control Governor, Train parting alarms and Brake cylinder cutoff valve
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class respectively. Technologically thyristor controlled BHEL WAG-8 was meant to be superior to the WAG-7 which was effectively using
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Initially, the Indian railways invited tenders to build locomotives to the new specification. The following responses were received:
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between 1990 and 2015, which made them the most numerous class of mainline electric locomotive till its successor the
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Each company submitted their prototypes and Indian Railways designated these prototypes as the WAG-7 class and
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The history of WAG-7 begins in the early 1990s with the aim of addressing the shortcomings of the previous
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SHANTIDAN, EKTA, KARAMVIR, GAJRAJ, SWARNABHA, SARVOTTAM, SAMARPAN, CAUVERY, SAMRAT, PRAYAS & AGRASAR
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technology from the 1960s. But due to issues from WAG-8, WAG-7 was selected for mass production.
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However, even before the WAG-7 another type of electric locomotive was imported from
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CLW submitted their upgraded WAG-5 model with 5000 hp with Co-Co bogies.
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WAG-7 : 20.5 tonnes (20.2 long tons; 22.6 short tons)
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WAG-7H : 132 tonnes (130 long tons; 146 short tons)
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WAG-7 : 123 tonnes (121 long tons; 136 short tons)
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WAG-7H : 22 tonnes (22 long tons; 24 short tons)
1505: 90:. Unsourced material may be challenged and removed. 2323: 1300:• Key : M -> WAG-7M (Formerly known as 16:Indian Railway class electric freight locomotive 677:Continuous : 5,000 hp (3,730 kW) 1349: 858:BHEL submitted a 5000 hp locomotive with 1491: 1335: 1290:Total Locomotives Active as of September 2024 410:Full worn:1,016 mm (3 ft 4 in) 881:in 1988. This locomotive was classified as 53:Learn how and when to remove these messages 1498: 1484: 2362:Chittaranjan Locomotive Works locomotives 230:Learn how and when to remove this message 212:Learn how and when to remove this message 150:Learn how and when to remove this message 2299: 675:Max : 5,350 hp (3,990 kW) 392:New:1,092 mm (3 ft 7 in), 502:WAG-7H : 4.135 m (13 ft 2352:Railway locomotives introduced in 1992 2324: 486:WAG-7 : 4.185 m (13 ft 1479: 161: 88:adding citations to reliable sources 59: 18: 892: 394:Half worn:1,055 mm (3 ft 13: 550:25 kV 50 Hz AC 14: 2373: 1459: 689:WAG-7 continuous : 45 tons? 34:This article has multiple issues. 1746: 1740: 1734: 1728: 297:Bharat Heavy Electricals Limited 252: 166: 64: 23: 691:WAG-7H starting : 91 tons? 99:"Indian locomotive class WAG-7" 75:needs additional citations for 42:or discuss these issues on the 1439: 1413: 1388: 1363: 805:that was developed in 1990 by 687:WAG-7 starting : 48 tons 1: 2332:Electric locomotives of India 1329: 807:Chittaranjan Locomotive Works 292:Chittaranjan Locomotive Works 813:. The model name stands for 791:The Indian locomotive class 7: 2347:5 ft 6 in gauge locomotives 1307: 667:105 km/h (65 mph) 192:the claims made and adding 10: 2378: 1223:South East Central Railway 834: 442:20.934 m (68 ft 2290: 2270: 2244: 2233: 2153: 2107: 2076: 2067: 2042: 2011: 1970: 1961: 1911: 1857: 1822: 1764: 1755: 1726: 1668: 1637: 1571: 1525: 1516: 1288: 1239: 1221: 1177: 1146: 1125: 1120: 1081: 1076: 1045: 993: 988: 944: 913: 777: 766: 756: 728: 718: 713: 709: 695: 681: 671: 663: 658: 654: 642: 622: 601: 591: 571: 559: 542: 532: 520: 482: 464:3.179 m (10 ft 460: 438: 414: 388: 375: 356: 345: 336: 331: 327: 311: 303: 287: 279: 274: 270: 251: 246: 995:Pt. Deen Dayal Upadhyaya 364:5 ft 6 in 1324:Rail transport in India 420:3.8 m (12 ft 1471:India railway fan club 887:3 Phase AC locomotives 1179:South Eastern Railway 1148:South Central Railway 1104:North Eastern Railway 1078:North Central Railway 261:based WAG-7 twins at 2337:25 kV AC locomotives 1669:IGR standard designs 1638:World War II designs 1510:locomotives of India 1319:Locomotives of India 1272:West Central Railway 990:East Central Railway 803:electric locomotives 84:improve this article 659:Performance figures 1934:WDS-4 (4A, 4B, 4D) 1029:East Coast Railway 860:thyristors control 177:possibly contains 2342:Co-Co locomotives 2319: 2318: 2315: 2314: 2286: 2285: 2229: 2228: 2063: 2062: 1957: 1956: 1724: 1723: 1427:. 30 October 2013 1357:"Trainweb WAG-7H" 1298: 1297: 1197:Bokaro Steel City 862:and Co-Co bogies. 845:steam locomotives 843:class and remove 795:is a class of 25 789: 788: 785: 784: 705: 704: 650: 649: 561:Current pickup(s) 544:Electric system/s 323: 322: 240: 239: 232: 222: 221: 214: 179:original research 160: 159: 152: 134: 57: 2369: 2357:BHEL locomotives 2297: 2296: 2242: 2241: 2235:Dual (AC and DC) 2074: 2073: 1968: 1967: 1762: 1761: 1750: 1744: 1738: 1732: 1523: 1522: 1500: 1493: 1486: 1477: 1476: 1454: 1453: 1451: 1443: 1437: 1436: 1434: 1432: 1421:"The WAG Series" 1417: 1411: 1410: 1408: 1406: 1392: 1386: 1385: 1383: 1381: 1367: 1361: 1360: 1353: 1347: 1346: 1343:"Trainweb WAG-7" 1339: 1122:Southern Railway 1047:Northern Railway 897: 896: 893:Locomotive sheds 711: 710: 656: 655: 551: 515: 514: 510: 507: 499: 498: 494: 491: 477: 476: 472: 469: 455: 454: 450: 447: 433: 432: 428: 425: 407: 406: 402: 399: 370: 365: 329: 328: 314: 272: 271: 256: 244: 243: 235: 228: 217: 210: 206: 203: 197: 194:inline citations 170: 169: 162: 155: 148: 144: 141: 135: 133: 92: 68: 60: 49: 27: 26: 19: 2377: 2376: 2372: 2371: 2370: 2368: 2367: 2366: 2322: 2321: 2320: 2311: 2282: 2266: 2236: 2225: 2149: 2103: 2059: 2038: 2007: 1953: 1907: 1853: 1818: 1751: 1745: 1739: 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763: 758: 754: 753: 745:WAG-7H : 730: 726: 725: 720: 716: 715: 707: 706: 703: 702: 699: 697:Factor of adh. 693: 692: 685: 679: 678: 673: 669: 668: 665: 661: 660: 652: 651: 648: 647: 644: 643:Safety systems 640: 639: 626: 620: 619: 605: 599: 598: 595: 589: 588: 583:WAG-7H : 575: 569: 568: 563: 557: 556: 546: 540: 539: 534: 530: 529: 524: 518: 517: 484: 480: 479: 462: 458: 457: 440: 436: 435: 418: 412: 411: 390: 389:Wheel diameter 386: 385: 379: 373: 372: 360: 354: 353: 350: 343: 342: 339: 337:Configuration: 334: 333: 332:Specifications 325: 324: 321: 320: 315: 313:Total produced 309: 308: 305: 301: 300: 289: 285: 284: 281: 277: 276: 268: 267: 257: 249: 248: 238: 237: 220: 219: 174: 172: 165: 158: 157: 72: 70: 63: 58: 32: 31: 29: 22: 15: 9: 6: 4: 3: 2: 2374: 2363: 2360: 2358: 2355: 2353: 2350: 2348: 2345: 2343: 2340: 2338: 2335: 2333: 2330: 2329: 2327: 2308: 2305: 2304: 2302: 2298: 2295: 2293: 2289: 2279: 2276: 2275: 2273: 2269: 2263: 2260: 2258: 2255: 2253: 2250: 2249: 2247: 2243: 2240: 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577:WAG-7 : 576: 574: 570: 567: 564: 562: 558: 555: 552: 547: 545: 541: 535: 531: 525: 523: 519: 485: 481: 463: 459: 441: 437: 419: 417: 413: 408: in) and 391: 387: 383: 380: 378: 374: 369:1,676 mm 366: 361: 359: 355: 351: 349: 346: •  344: 340: 335: 330: 326: 319: 316: 310: 306: 302: 298: 293: 290: 286: 282: 278: 273: 269: 264: 260: 255: 250: 245: 242: 234: 231: 216: 213: 205: 195: 191: 187: 181: 180: 175:This article 173: 164: 163: 154: 151: 143: 132: 129: 125: 122: 118: 115: 111: 108: 104: 101: –  100: 96: 95:Find sources: 89: 85: 79: 78: 73:This article 71: 67: 62: 61: 56: 54: 47: 46: 41: 40: 35: 30: 21: 20: 2211:WAGC3/WAG-10 2195: 1800:(3B, 3E, 3F) 1526:BESA designs 1441: 1429:. 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Retrieved 1374: 1365: 1351: 1337: 1299: 1289: 1052:Khanalampura 876: 865: 850: 838: 826: 792: 790: 760: 750: 746: 741: 737: 733: 672:Power output 624:Train brakes 317: 263:Secunderabad 241: 226: 208: 202:January 2021 199: 176: 146: 140:January 2021 137: 127: 120: 113: 106: 94: 82:Please help 77:verification 74: 50: 43: 37: 36:Please help 33: 2069:AC electric 1963:DC electric 1572:IRS designs 1507:Broad-gauge 872:tap-changer 778:Disposition 742:24501-24700 738:28000-28770 734:27001-27999 533:Loco weight 2326:Categories 2245:Mixed type 2077:Mixed type 1971:Mixed type 1765:Mixed type 1425:24 Coaches 1330:References 1184:Bondamunda 1016:Samastipur 618:(Friction) 616:Rheostatic 603:Loco brake 593:MU working 566:pantograph 384:Fabricated 304:Build date 280:Power type 259:Vijayawada 186:improve it 110:newspapers 39:improve it 2300:Passenger 2292:Dual mode 2257:WCAM-2/2P 2191:WAG-6B/6C 2108:Passenger 2012:Passenger 1823:Passenger 1691:WL (1955) 1686:WL (1939) 1447:"e-Locos" 1210:Kharagpur 964:Bardhaman 909:Quantity 906:Shed Code 770:All over 757:Nicknames 719:Operators 522:Axle load 516: in) 500: in) 478: in) 456: in) 434: in) 416:Wheelbase 307:1990–2015 190:verifying 45:talk page 2237:electric 1929:WDS-3/4C 1912:Shunting 1865:WDG-2/3A 1835:WDP-2/3A 1431:29 April 1405:18 April 1380:29 April 1308:See also 1166:Guntakal 977:Jamalpur 933:Bhusawal 587:HS15250G 581:HS15250A 554:Overhead 341:​ 283:Electric 1153:Kazipet 1065:Lucknow 951:Asansol 927:68+40M 835:History 729:Numbers 585:Hitachi 579:Hitachi 511:⁄ 495:⁄ 473:⁄ 451:⁄ 429:⁄ 403:⁄ 299:(BHEL). 294:(CLW), 288:Builder 184:Please 124:scholar 2307:WDAP-5 2278:WCAG-1 2262:WCAM-3 2252:WCAM-1 2221:WAG-12 2216:WAG-11 2186:WAG-6A 1903:WDG-6G 1893:WDG-4G 1798:WDM-3D 1792:WDM-3A 1782:WDM-2G 1757:Diesel 1302:WCAM-3 1259:Ratlam 1228:Raipur 1083:Jhansi 920:Kalyan 883:WAG-6A 829:WAG-12 823:WAG-9. 781:active 767:Locale 714:Career 633:Vacuum 483:Height 439:Length 377:Bogies 352:Co′Co′ 265:outer. 126:  119:  112:  105:  97:  2271:Goods 2206:WAG-9 2201:WAG-8 2196:WAG-7 2181:WAG-5 2176:WAG-4 2171:WAG-3 2166:WAG-2 2161:WAG-1 2154:Goods 2145:WAP-7 2140:WAP-6 2135:WAP-5 2130:WAP-4 2125:WAP-3 2120:WAP-2 2115:WAP-1 2099:WAM-4 2094:WAM-3 2089:WAM-2 2084:WAM-1 2055:WCG-2 2050:WCG-1 2043:Goods 2034:WCP-4 2029:WCP-3 2024:WCP-2 2019:WCP-1 2003:WCM-6 1998:WCM-5 1993:WCM-4 1988:WCM-3 1983:WCM-2 1978:WCM-1 1949:WDS-8 1944:WDS-6 1939:WDS-5 1924:WDS-2 1919:WDS-1 1898:WDG-5 1883:WDG-4 1858:Goods 1840:WDP-4 1830:WDP-1 1814:WDM-7 1809:WDM-6 1804:WDM-4 1787:WDM-3 1777:WDM-2 1772:WDM-1 1518:Steam 1450:(PDF) 1294:1999 1263:RTMD 1250:VTAD 1246:Vatva 1127:Erode 1109:Gonda 1034:Angul 981:JMPD 868:WAG-8 841:WAG-5 793:WAG-7 772:India 751:28739 747:28024 701:0.345 461:Width 358:Gauge 247:WAG-7 131:JSTOR 117:books 1794:(3C) 1433:2020 1407:2020 1382:2020 1281:NKJD 1235:150 1232:RPDX 1217:200 1214:KGPE 1204:101 1201:IPTE 1188:BNDX 1173:180 1170:GTLE 1160:140 1157:KZJD 1139:EDDX 1113:GDDX 1095:JHSD 1087:JHSE 1069:AMVD 1056:KJGE 1041:190 1038:ANGE 1020:SPJD 1007:DDUX 968:BWNX 955:ASNL 937:BSLL 924:KYNE 903:Name 900:Zone 879:ASEA 819:BHEL 809:for 749:and 637:Dual 635:and 614:and 612:Hand 382:ALCO 318:1994 103:news 1660:AWC 1655:CWD 1650:AWE 1645:AWD 1304:) 1284:96 1266:40 1253:28 1191:39 1142:28 1134:94 1131:EDE 1116:80 1098:45 1090:88 1072:50 1059:19 1023:30 1010:83 1002:90 999:DDU 984:12 971:28 958:55 940:25 629:Air 608:Air 348:UIC 188:by 86:by 2328:: 1887:4D 1877:3D 1873:3C 1869:3B 1848:4D 1846:, 1844:4B 1716:WW 1711:WV 1706:WU 1701:WT 1696:WM 1681:WG 1676:WP 1629:XS 1624:XT 1619:XP 1614:XH 1609:XG 1604:XF 1599:XE 1594:XD 1589:XC 1584:XB 1579:XA 1563:HT 1558:HG 1553:AP 1548:HP 1543:PT 1538:SG 1533:SP 1423:. 1398:. 1373:. 889:. 800:AC 797:kV 740:, 736:, 631:, 610:, 48:. 1889:) 1885:( 1879:) 1875:, 1871:, 1867:( 1850:) 1842:( 1499:e 1492:t 1485:v 1452:. 1435:. 1409:. 1384:. 1359:. 1345:. 597:4 513:4 509:3 506:+ 504:6 497:4 493:3 490:+ 488:8 475:8 471:1 468:+ 466:5 453:8 449:1 446:+ 444:8 431:8 427:5 424:+ 422:5 405:2 401:1 398:+ 396:5 371:) 367:( 233:) 227:( 215:) 209:( 204:) 200:( 182:. 153:) 147:( 142:) 138:( 128:· 121:· 114:· 107:· 80:. 55:) 51:(

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Vijayawada
Secunderabad
Chittaranjan Locomotive Works
Bharat Heavy Electricals Limited
UIC
Gauge
5 ft 6 in
Bogies
ALCO

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