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Table 8 — 50RTP08 Blower Performance Data (cont)
LEGEND
NOTES:
1. A = Standard RPM/Standard Motor, B = Low RPM/Standard
Motor, C = High RPM/Standard 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 1.6 1.7 1.8 1.9 2.0
3800
bhp 1.29 1.37 1.44 1.52 1.59 1.67 1.74 1.82 1.89 2.00 2.04 2.12 2.20 2.28 2.36 2.44 2.52 2.60 2.67 2.77 2.84
Sheave/MotorAAAAAACCCEEEEEEEEEEEE
rpm 712 740 764 792 816 840 864 888 908 932 952 976 1000 1020 1040 1060 1080 1100 1116 1136 1152
Turns Open 4.0 3.5 3.0 2.5 2.0 1.5 6.0 5.5 5.0 4.5 4.5 4.0 3.5 3.0 3.0 2.5 2.5 2.0 2.0 1.5 1.0
3900
bhp 1.41 1.48 1.54 1.61 1.70 1.78 1.84 1.93 2.01 2.08 2.17 2.26 2.33 2.41 2.49 2.57 2.65 2.74 2.81 2.89 —
Sheave/MotorAAAAAACCEEEEEEEEEEEE—
rpm 728 752 776 804 828 852 872 896 920 940 964 988 1008 1028 1048 1068 1088 1108 1124 1144 —
Turns Open 4.0 3.0 2.5 2.0 1.5 1.0 5.5 5.5 5.0 4.5 4.0 4.0 3.5 3.0 3.0 2.5 2.0 2.0 1.5 1.0 —
4000
bhp 1.48 1.56 1.64 1.71 1.80 1.88 2.00 2.03 2.12 2.19 2.27 2.35 2.43 2.52 2.61 2.69 2.78 2.86 2.93 — —
Sheave/MotorAAAAACEEEEEEEEEDEEE——
rpm 740 768 792 816 840 864 888 908 932 952 976 996 1016 1036 1056 1076 1096 1116 1132 — —
Turns Open 3.5 3.0 2.5 2.0 1.5 6.0 5.5 5.0 4.5 4.5 4.0 3.5 3.5 3.0 2.5 2.5 2.0 2.0 1.5 — —
bhp — Brake Horsepower
ESP — External Static Pressure