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Fan speed adjustment tables
30GV and 30GY 020
Air flow 6 r/s 7 r/s 8 r/s 9 r/s 10 r/s 11 r/s 12 r/s 13 r/s 14 r/s
l/s ESP kW ESP kW ESP kW ESP kW ESP kW ESP kW ESP kW ESP kW ESP kW
1900 61 0.6 97 0.9 137 1.1 180 1.4 226 1.7 277 1.9 330 2.2 388 2.4 445 2.7
2100 52 0.7 89 1.0 130 1.3 174 1.6 222 1.8 274 2.1 329 2.4 387 2.7 446 3.0
2300 40 0.8 79 1.1 121 1.4 167 1.7 216 2.0 269 2.3 325 2.6 385 3.0 445 3.3
2500 27 0.8 67 1.2 110 1.5 157 1.8 208 2.2 262 2.5 320 2.9 381 3.2 442 3.5
2700 12 0.9 53 1.3 98 1.6 146 2.0 198 2.4 253 2.7 312 3.1 375 3.5 437 3.8
2900 0 37 1.4 83 1.8 133 2.1 186 2.5 243 2.9 303 3.3 367 3.7 431 4.1
3100 20 1.4 67 1.9 118 2.3 173 2.7 231 3.1 293 3.6 358 4.0 425 4.4
3300 1 50 2.0 102 2.4 158 2.9 217 3.3 280 3.8 347 4.2 413 4.7
3500 30 2.1 84 2.6 141 3.1 201 3.5 266 4.0 334 4.5 401 5.0
3700 8 2.2 63 2.7 122 3.2 184 3.7 250 4.2 319 4.8 388 5.3
3900 0 42 2.9 101 3.4 165 3.9 232 4.5 302 5.0 372 5.5
4100 18 3.0 79 3.6 144 4.1 212 4.7 284 5.3 355 5.8
4300 0 55 3.8 121 4.4 190 4.9 263 5.5 336 6.1
4500 29 3.9 96 4.6 167 5.2 241 5.8 316 6.4
4700 1 70 4.8 142 5.4 217 6.0 293 6.7
4900 41 5.0 115 5.6 192 6.3 269 7.0
5100 11 5.2 86 5.9 164 6.5 243 7.2
5300 0 55 6.1 135 6.8 215 7.5
30GV and 30GY 025-030-035
Air flow 6 r/s 7 r/s 8 r/s 9 r/s 10 r/s 11 r/s 12 r/s 13 r/s 14 r/s
l/s ESP kW ESP kW ESP kW ESP kW ESP kW ESP kW ESP kW ESP kW ESP kW
3000 60 0.9 89 1.2 122 1.5 157 1.8 194 2.0 235 2.3 278 3.1 324 3.7 373 4.3
3500 52 1.1 83 1.4 117 1.7 153 2.1 193 2.4 235 2.7 279 3.6 327 4.3 377 5
4000 41 1.3 74 1.6 109 2 147 2.4 188 2.8 232 3.2 278 4.1 327 4.9 379 5.8
4500 28 1.4 62 1.8 99 2.2 138 2.7 181 3.1 226 3.6 274 4.7 324 5.5 378 6.5
5000 12 1.6 47 2 86 2.5 127 2.9 171 3.5 217 4 267 5.2 319 6.1 374 7.2
5500 0 30 2.2 70 2.7 113 3.2 158 3.8 206 4.5 257 5.7 311 6.8 367 7.9
6000 10 2.4 52 2.9 96 3.5 143 4.2 193 4.9 245 6.2 300 7.4 358 8.6
6500 0 31 3.2 77 3.8 125 4.6 176 5.3 230 6.7 287 8 347 9.4
7000 7 3.4 55 4.1 105 4.9 157 5.8 213 7.3 271 8.6 332 10.1
7500 0 30 4.4 81 5.3 136 6.2 193 7.8 253 9.2 315 10.8
8000 2 4.7 56 5.6 111 6.6 170 8.3 231 9.8 296 11.5
8500 27 6 85 7.1 145 8.8 208 10.4 273 12.2
9000 0 55 7.5 117 9.3 181 11 248 12.9
9500 23 7.9 86 9.9 152 11.7 221 13.7
10000 0 53 10.4 120 12.3 190 14.4
10500 17 10.9 86 12.9 158 15.1
ESP External static pressure, Pa
kW Fan motor power input, kW
r/s Revolutions per second
Note : As units 30GV and 30GY 044 to 059 are two GV and GY 025 to 035 units connected, the tables above apply to them as well.
Fan laws
The fan laws state that for a given system resistance and air density:
- The air flow rate varies as a direct function of the speed ratio: Qv2 = Qv1 x N2/N1
- The pressure varies as a function of the square value of the speed ratio: P2 = P1 x (N2/N1)
2
- The output varies as a function of the cube value of the speed ratio: Pa2 = Pa1 x (N2/N1)
3
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