Document Y9kVMEQnrpRXjX1ox4g9ebr7n

WOUND ROTOR, SYNCHRONOUS & MEDIUM VOLTAGE MOTOR CONTROL 272 MOTOR and WIRE RATING DATA Ampere Rating of A-c and D-c Motors The ampere ratings of motors vary somewhat, depending upon the type of motor. The values given below can be considered average for the various types and are to be used only when the actual full load current is not known. In the case of high torque squirrel cage motors, the ampere ratings will be at least 10% greater than the values given below: For 25 cycle motors the current in most cases will be equivalent to the current of a 60 cycle motor having the same number of poles, i.e., for 1500 R.P.M., 25 cycles, use data for 3600 R.P.M., 60 cycles; for 750 R.P.M., 25 cycles, use data for 1800 R.P.M., 60 cycles; etc. This rule will be found quite accurate for 25 cycle motors above 500 R.P.M. For motors 500 R.P.M. or less, particularly the smaller sizes below 20 Hp, the current will be somewhat higher (5% to 15%) than the equivalent 60 cycle motor. MOTOR CONTROL CENTERS -UNITROL DC MOTOR CONTROL MOTOR CONTROL F0R SPECIFIC APPLICATIONS AMPERE RATINGS OF THREE PHASE, 60 CYCLE, A-C INDUCTION MOTORS Syn. HP Speed 110 RPM Volts `A 1800 1200 900 1.9 2.8 3.2 V5 1800 1200 900 )) 1800 1200 900 2.38 3.18 3.60 3.36 4.14 5.80 14 1800 1200 900 4.66 5.70 6.90 1 3600 5.50 1800 6.10 1200 7.08 900 7.48 1)4 3600 1800 1200 900 8.34 8.56 9.70 11.60 2 3600 11.1 1800 11.5 1200 12.7 900 14.4 3 3600 15.7 1800 16.6 1200 17.8 900 20.4 5 3600 25.4 1800 26.4 1200 28.2 900 31.2 7)4 3600 1800 1200 900 10 3600 1800 1200 900 600 38.4 38.6 40.6 47.6 49.0 50.4 53.2 57.8 67.6 15 3600 73.4 1800 76.2 1200 79.8 900 83.8 600 96.6 20 3600 98. 1800 101. 1200 103. 900 109. 600 123. 25 3600 118. 1800 125. 1200 129. 900 135. 600 144. 30 1800 146. 1200 154. 900 159. 600 176. Current in Amperes 220 Volts .95 1.40 1.60 1.19 1.59 1.80 1.68 2.07 2.90 2.33 2.85 3.45 2.75 3.05 3.54 3.74 4.17 4.28 4.85 5.81 5.56 5.76 6.35 7.21 7.87 8.29 8.92 10.20 12.7 13.2 14.1 15.6 19.2 19.3 20.3 23.8 24.5 25.2 26.6 28.9 33.8 36.7 38.1 39.9 41.9 48.3 49.0 50.5 51.7 54.6 61.5 59.2 62.7 64.7 67.4 71.9 72.8 77.1 79.4 87.9 380 Volts .55 .81 .93 .69 .92 1.04 .973 1.20 1.68 1.35 1.66 2.00 1.60 1.77 2.05 2.17 2.42 2.48 2.81 3.37 3.22 3.34 3.68 4.18 ~ 4.56 4.79 5.16 5.89 7.34 7.64 8.16 9.03 11.1 11.2 11.8 13.8 14.2 14.6 15.4 16.8 19.6 21.3 22.1 23.2 24.3 28.0 28.4 29.3 30.0 31.6 35.7 34.3 36.2 37.4 39.0 41.6 42.2 44.7 46.0 50.8 440 Volts .48 .70 .80 .60 .80 .90 .84 1.04 1.45 1.17 1.43 1.73 1.38 1.53 1.77 1.87 2.09 2.14 2.43 2.91 2.78 2.88 3.18 3.61 3.94 4.14 4.46 5.09 6.34 6.60 7.05 7.80 9.6 9.7 10.2 11.9 12.3 12.6 13.3 14.5 16.9 18.4 19.1 20.0 21.0 24.2 24.5 25.3 25.9 27.3 30.8 29.6 31.3 32.3 33.7 35.9 36.4 38.6 39.7 43.9 550 Volts .38 .56 .64 .48 .64 .72 .67 .83 1.16 .93 1.14 1.38 1.10 1.22 1.42 1.50 1.67 1.71 1.94 2.32 2.22 2.30 2.54 2.88 3.14 3.32 3.56 4.08 5.08 5.28 5.64 6.24 7.68 7.72 8.12 9.51 9.8 10.1 10.6 11.6 13.5 14.7 15.2 16.0 16.8 19.3 19.6 20.2 20.6 21.8 24.6 23.6 25.0 25.8 27.0 28.8 29.2 30.8 31.8 35.2 2200 Volts 5.2 5.3 5.4 5.8 6.4 6.3 6.5 6.7 6.9 8.1 7.8 8.0 8.2 9.3 CUTLER'HAMMER 272 Syn. Hp Speed 110 RPM Volts Current in Amperes 220 380 440 550 Volts Volts Volts Volts 2200 Volts 40 1800 196. 98. 56.7 49.0 39.2 10.0 1200 198. 99. 57.3 49.5 39.6 10.3 900 208. 104. 60.2 52.0 41.6' 10.6 600 226. 113. 65.4 56.5 45.2 11.5 50 1800 242. 121. 70.0 60.5 48.4 12.3 1200 244. 122. 70.6 61.0 48.8 12.4 900 254. 127. 73.5 63.5 50.8 13.1 600 276. 138. 79.9 69.0 55.2 14.2 60 1800 286. 143. 82.8 71.5 57.2 14.6 1200 296. 148. 85.7 74.0 59.2 14.9 900 302. 151. 87.4 75.5 60.4 15.4 600 324. 162. 93.8 81.0 64.8 16.7 75 1800 356. 178. 103. 1200 362. 181. 105. 900 374. 187. 108. 600 398. 199. 115. 89.0 71.2 18.0 90.5 72.4 18.2 93.5 74.8 19.0 99.5 79.6 21.0 100 1800 1200 900 600 450 466. 233. 134. 116. 478. 239. 139. 120. 490. 245. 142. 123. 514. 257. 148. 128. 580. 290. 168. 145. 93.2 23.6 95.6 24.2 98.0 24.8 103. 26.4 116. 29.8 125 1800 1200 900 720 600 450 578. 289. 167. 144. 596. 298. 173. 149. 610. 305. 177. 153. 628. 314. 182. 157. 640. 320. 185. 160. 702. 351. 203. 175. 115. 119. 122. 126. 128. 140. 29.2 29.9 30.9 31.3 32.8 36.0 150 1800 1200 900 720 600 450 692. 346. 200. 173. 700. 350. 203. 175. 726. 363. 211. 182. 752. 376. 218. 188. 756. 378. 219. 189. 836. 418. 242. 209. 138. 34.8 140. 35.5 145. 37.0 150. 37.0 151. 38.8 166. 42.0 200 1800 920. 460. 266. 230. 184. 1200 932. 466. 270. 233. 186. 900 980. 490. 284. 245. 196. 720 988. 494. 286. 247. 197. 600 996. 498. 288. 249. 199. 450 1060. 528. 306. 264. 211. 46.7 47.0 49.4 49.0 50.9 53.7 250 1800 1140. 1200 1160. 900 1210. 720 1250. 600 1260. 450 1260. 360 1350. 572. 331. 580. 336. 604. 350. 625. 361. 630. 365. 630. 365. 676. 391. 286. 290. 302. 312. 315. 315. 338. 229. 232. 242. 250. 252. 252. 270. 57.5 58.5 61.5 61.5 61.0 65.3 70.0 300 1800 1370. 685. 396. 342. 274. 1200 1390. 696. 403. 348. 278. 900 1440. 722. 418. 361. 289. 600 1440. 722. 418. 361. 289. 450 1520. 760. 440. 380. 304. 360 1660. 830. 481. 415. 332. 69.0 70.0 73.5 72.3 76.0 82.8 400 1800 1820. 910. 527. 455. 364. 91.8. 1200 1870. 933. 540. 466. 373. 93.5 600 1910. 955. 552. 477. 382. 96.0 450 2000. 1000. 579. 500. 400. 100. 360 2090. 1050. 606. 523. 418. 105. 500 1800 2310. 1160. 669. 578. 462. 116. 1200 2240. 1120. 648. 560. 448. 113. 600 2360. 1180. 683. 590. 472. 118. 450 2410. 1200. 697. 602. 482. 124. 360 2630. 1320. 762. 658. 526. 132. MOTOR & WIRE ' rating daTa - :f ~V ' HEATER COILS FOR OVERLOAD RELAYS