GENER.4 TOR 1
TABLE-2
| t (ms) | Idc | =f (time) kA | |||
| 0 | 0.882 x | 1.000 | = | 0.882 | |
| 1/2T= | 10.0 | 0.882 x | 0.513 | = | 0.453 |
| T= | 20.0 | 0.882 x | 0.264 | = | 0.233 |
| 3/2 T= | 30.0 | 0.882 x | 0.135 | = | 0.119 |
| 2T= | 40.0 | 0.882 x | 0.069 | = | 0.061 |
| 3T= | 60.0 | 0.882 x | 0.0 IS | = | 0.016 |
M-LX.POSSIBLE PEAK VALVE OF THE SHORT CIRCUIT CURRENT OF THE GENER.4T01
Assumed, fault occurring in close proximity to the main busbar, resistances neglected.
From tables 1 and 2
|_ SHORT CIRCUIT CURRENT OF MOTORS _
TABLE-3
| 1 | 0 | 1/2T | T | 2T |
| FACTOR | 6.25 | 4 | 2.5 | 1 |
| IM(kA) | 8.7362 | 5.5912 | 3.4945 | 1.3978 |
EVALUATION OF THE MAX. VALUE OF THE SHORT CIRCUIT CURRENT IN CASE _ OF FAULT NEAR BUSBAR: _
Assume parallel run of generators,
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| 15 | 1 | 107 | 1 | 322 | 3 | |||
| 18 | 1 | 172 | - | 323 | 8 | |||
| 21 | 1 | 177 | 2 | 325 | - | |||
| 22 | 1 | 198 | 1 | 343 | 1 | |||
| 28 | 1 | 254 | 1 | 347 | 1 | (+ C.I.) | ||
| 30 | 1 | 255 | 1 | 349 | 1 | |||
| 31 | 6 | 268 | 1 | 364 | 1 | |||
| 33 | 1 | 269 | 1 | 365 | 1 | |||
| 34 | 2 | 270 | 3 | 367 | 1 | |||
| 36 | 1 | 277 | 3/4 | 368 | 1 | |||
| 37 | 4 | 278 | 1 | 371 | 4 | |||
| 41 | 1 | 279 | 6/8 | 417 | 1 | |||
| 48 | 1 | 280 | 3/4 | 418 | 1 | |||
| 49 | - | 281 | 2 | |||||
| 51 | 1 | 282 | 2 | |||||
| 53 | 1 | 283 | 4/6 | |||||
| 59 | 1 | 284 | 1 | |||||
| 70 | 1 | 290 | 1 | PMG | ||||
| 71 | 1 | 291 | 1 | |||||
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| 33 | 1 | 269 | 1 | 365 | 1 | |||
| 34 | 2 | 270 | 3 | 367 | 1 | |||
| 36 | 1 | 277 | 3/4 | 368 | 1 | |||
| 37 | 4 | 278 | 1 | 371 | 4 | |||
| 41 | 1 | 279 | 6/8 | 417 | 1 | |||
| 48 | 1 | 280 | 3/4 | 418 | 1 | |||
| 49 | - | 281 | 2 | |||||
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| 53 | 1 | 283 | 4/6 | |||||
| 59 | 1 | 284 | 1 | |||||
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| 62 | 4 | 291 | 1 | |||||
| 68 | 4 | 292 | 1 | |||||
| 70 | 1 | 293 | 1 | |||||
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