23
Vari-Green
®
Motor Options
Benefits
Operates on AC power that’s converted to DC—
providing a more efficient motor operation as compared
to an AC operation.
• The motor can attain up to 85% efficiency and reduce
energy consumption.
• Watt savings of 30-70% depending on rpm.
Note: As motor speed is turned down, efficiency stays high
as compared to an AC motor that decreases dramatically.
• Operates cooler than a standard AC motor at lower
RPMs. A cooler motor has longer motor life and
reduces energy consumption.
• 80% usable RPM turndown as low as 300 rpm.
• SEI fans with Vari-Green motors can provide all the
CFM and static pressure ranges of a comparable
belt drive.
• Maintenance costs are reduced as there are no belts
or bearings to replace and no pulleys to adjust.
• Direct drive fans are often preferred where
maintenance access is difficult.
• Provides a solution for demand controlled ventilation
applications.
Vari-Green Advantages
• Initial cost is less than a belt drive/motor starter
combination.
• Lower operating cost
• No maintenance, no belts, pulleys or bearings
• Easy RPM adjustment
SE1 Performance Limits - Vari-Green
®
Model Number Fan RPM
Max
BHP
Max
Sones
CFM/Static Pressure in Inches WG
0.00 0.05 0.10 0.125 0.15 0.20 0.25 0.30 0.375 0.50 0.625 0.75
SE1-8-440
1725
0.044 11.3
511 476 435 387 349 261 220 191
300 89
SE1-10-440
1725
0.098 11.3
1029 979 921 889 856 792 707
300 179
SE1-12-426
1725
0.078 14.8
1239 1187 1122 1084 1043 947 828 711 468
300 215
SE1-12-432
1725
0.26 14.8
1613 1553 1490 1455 1421 1334 1254 1176 1056 888 679 556
300 281
SE1-12-436
1725
0.13 16.7
1621 1570 1513 1471 1429 1346 1230 1073 639
300 282
SE1-14-432
1725
0.27 12.5
2370 2317 2264 2237 2209 2152 2096 2007 1864
300 412
SE1-14-436
1725
0.38 16.3
2695 2635 2575 2544 2511 2445 2378 2292 2129 1728 1183
300 469
SE1-14-440
1725
0.47 21
2386 2307 2234 2205 2176 2119 2048 1973 1877 1435 1282 1163
300 415
SE1-16-421
1725
0.36 19
2516 2470 2424 2400 2377 2327 2268 2210 2093 1862
300 438
SE1-16-426
1725
0.49 31
3136 3081 3026 2999 2972 2917 2852 2787 2681 2464
300 545
SE1-16-428
1725
0.61 16.1
3325 3266 3207 3178 3149 3088 3026 2963 2849 2637 2385 1801
300 578
SE1-16-436
1725
0.85 21
4019 3956 3894 3863 3832 3766 3697 3629 3526 3262 2790 2214
300 699
SE1-18-424
1725
0.7 17
4164 4090 4017 3980 3943 3859 3768 3676 3519 3157 2826
300 724
SE1-18-429
1725
0.85 22
4816 4737 4658 4618 4578 4489 4382 4274 4113 3817 3342 2860
300 838
SE1-20-420
1550 0.61 24 4148 4074 4000 3963 3926 3859 3793 3726 3610 3352
1725
0.84 24
4616 4550 4483 4450 4417 4352 4292 4232 4143 3953 3718
300 803