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Table 5 — 50RTP04 Blower Performance Data
LEGEND
NOTES:
1. A = Standard RPM/Standard Motor, B = Low RPM/Standard
Motor, C = High RPM/Standard Motor, D = Standard RPM/
Large Motor, E = High RPM/Large Motor
2. Unit shipped with standard drive package with drive sheave 2.5
turns open unless otherwise requested. Field adjustment may
be required for specified CFM.
3. ISO/AHRI rating point with standard drive package and drive
sheave open 3.0 turns at .30 ESP.
4. Performance data does not include drive losses and is based
on sea level conditions.
5. All airflow is rated at lowest voltage if unit is dual rated, i.e.,
rated at 208 volts for 208-230 volt units.
AIRFLOW
(cfm)
ESP
AIRFLOW (cfm) AT EXTERNAL STATIC PRESSURE (in. wg)
0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5
1200
bhp 0.27 0.31 0.34 0.37 0.40 0.42 0.45 0.48 0.52 0.55 0.58 0.60 0.63 0.66 0.70 0.73
Sheave/MotorBBAAAAAAAAACCCCC
rpm 750 800 845 890 935 975 1015 1055 1095 1135 1170 1205 1240 1275 1310 1345
Turns Open 5.0 4.0 5.0 4.0 3.5 3.0 2.5 1.5 1.0 0.5 0.0 3.0 2.5 2.0 1.5 1.5
1300
bhp 0.35 0.38 0.41 0.43 0.45 0.47 0.53 0.59 0.64 0.67 0.70 0.72 0.75 0.78 0.80 0.83
Sheave/MotorBAAAAAAAAACCCCCC
rpm 810 850 890 930 970 1010 1050 1090 1125 1160 1195 1230 1265 1300 1330 1365
Turns Open 4.0 4.5 4.0 3.5 3.0 2.5 2.0 1.0 0.5 0.0 3.0 3.0 2.5 2.0 1.5 1.0
1400
bhp 0.43 0.46 0.49 0.52 0.55 0.58 0.62 0.66 0.68 0.71 0.74 0.77 0.82 0.86 0.91 0.96
Sheave/MotorAAAAAAAAACCCCCCC
rpm 865 900 935 970 1010 1045 1085 1120 1155 1190 1220 1255 1290 1320 1355 1390
Turns Open 4.5 4.0 3.5 3.0 2.5 2.0 1.5 0.5 0.0 3.5 3.0 2.5 2.0 1.5 1.0 1.0
1500
bhp 0.49 0.52 0.54 0.57 0.62 0.68 0.73 0.76 0.79 0.82 0.85 0.89 0.92 0.96 1.00 1.05
Sheave/MotorAAAAAAAACCCCCCEE
rpm 910 945 975 1010 1045 1080 1115 1150 1180 1215 1250 1280 1310 1345 1375 1405
Turns Open 3.5 3.5 3.0 2.5 2.0 1.5 1.0 0.0 3.5 3.0 2.5 2.0 2.0 1.5 1.0 0.5
1600
bhp 0.62 0.65 0.67 0.70 0.72 0.75 0.78 0.82 0.86 0.89 0.94 1.00 1.04 1.08 1.13 1.18
Sheave/MotorAAAAAAACCCCEEEEE
rpm 960 985 1015 1050 1080 1115 1145 1175 1210 1240 1275 1305 1335 1365 1395 1425
Turns Open 3.0 2.5 2.5 2.0 2.0 1.5 0.5 3.5 3.0 2.5 2.5 2.0 1.5 1.0 0.5 0.5
1700
bhp 0.74 0.77 0.80 0.83 0.85 0.88 0.90 0.93 0.95 1.00 1.06 1.11 1.17 1.22 1.27 1.31
Sheave/MotorAAAAAACCCEEEEEEE
rpm 1000 1030 1060 1090 1115 1150 1180 1210 1240 1270 1300 1330 1360 1390 1420 1445
Turns Open 2.5 2.0 1.5 1.5 1.0 1.0 3.5 3.0 3.0 2.5 2.0 1.5 1.0 1.0 0.5 0.0
1800
bhp 0.83 0.87 0.90 0.94 0.98 1.02 1.06 1.09 1.14 1.18 1.23 1.28 1.32 1.36 — —
Sheave/MotorAAAAAEEEEEEEEE——
rpm 1050 1075 1100 1125 1155 1185 1215 1245 1275 1300 1330 1360 1385 1415 — —
Turns Open 2.0 1.5 1.0 0.5 0.5 3.5 3.0 2.5 2.5 2.0 1.5 1.0 1.0 0.5 — —
1900
bhp 0.971.001.031.081.121.161.201.251.291.341.381.42————
Sheave/MotorADDEEEEEEEEE————
rpm 1100 1120 1145 1175 1200 1225 1250 1280 1305 1335 1360 1385 ————
Turns Open1.01.00.53.53.03.02.52.02.01.51.01.0————
2000
bhp 1.131.171.201.241.281.321.361.401.44———————
Sheave/MotorDDEEEEEEE———————
rpm 1145 1170 1190 1215 1235 1260 1290 1315 1340 — — — ————
Turns Open0.50.53.03.02.52.52.01.51.5———————
bhp — Brake Horsepower
ESP — External Static Pressure