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Table 12 — 50RTP20 Blower Performance Data (cont)
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)
0.00.10.20.30.40.50.60.70.80.91.01.11.21.31.41.51.61.71.81.92.0
8,600
bhp 3.80 3.97 4.11 4.28 4.46 4.62 4.78 5.00 5.14 5.32 5.52 5.72 5.92 6.12 6.30 6.46 6.58 6.74 6.87 — —
Sheave/MotorAAAAAAADDEEEEEEEEEE——
rpm 816 840 860 884 908 928 948 972 992 1012 1032 1052 1072 1092 1112 1132 1148 1168 1184 — —
Turns Open 5.0 4.5 4.0 3.0 2.5 2.0 1.5 1.0 0.0 5.5 5.0 4.5 4.5 4.0 3.5 3.0 2.5 2.0 2.0 — —
8,800
bhp 4.06 4.25 4.41 4.60 4.76 5.00 5.11 5.27 5.44 5.64 5.84 6.04 6.24 6.43 6.56 6.72 6.88 7.01 7.17 — —
Sheave/MotorAAAAADDDDEEEEEEEEEE——
rpm 832 856 876 900 920 944 964 984 1004 1024 1044 1064 1084 1104 1120 1140 1160 1176 1196 — —
Turns Open 4.5 4.0 3.5 3.0 2.0 1.5 1.0 0.5 0.0 5.5 5.0 4.5 4.0 3.5 3.0 3.0 2.5 2.0 1.5 — —
9,000
bhp 4.30 4.50 4.66 4.86 5.04 5.21 5.39 5.56 5.76 5.96 6.16 6.36 6.56 6.71 6.89 7.07 7.21 7.39 — — —
Sheave/MotorAAAADDDDEEEEEEEEEE———
rpm 848 872 892 916 936 956 976 996 1016 1036 1056 1076 1096 1112 1132 1152 1168 1188 — — —
Turns Open 4.03.53.02.52.01.00.50.05.55.04.54.04.03.53.02.52.02.0 — — —
9,200
bhp 4.62 4.78 5.00 5.15 5.32 5.48 5.65 5.84 6.04 6.24 6.44 6.64 6.81 7.02 7.20 7.41 — — — — —
Sheave/MotorAADDDDDEEEEEEEEE—————
rpm 868 888 912 932 952 972 992 1012 1032 1052 1072 1092 1108 1128 1144 1164 — — — — —
Turns Open 3.5 3.0 2.5 2.0 1.5 1.0 0.0 5.5 5.0 4.5 4.5 4.0 3.5 3.0 2.5 2.5 — — — — —
9,400
bhp 4.87 5.07 5.25 5.42 5.60 5.77 5.96 6.16 6.36 6.56 6.72 6.92 7.15 7.33 — — — — — — —
Sheave/MotorADDDDDDEEEEEEE———————
rpm 884 908 928 948 968 988 1008 1028 1048 1068 1084 1104 1124 1140 — — — — — — —
Turns Open 3.0 2.5 2.0 1.5 1.0 0.5 0.0 5.0 5.0 4.5 4.0 3.5 3.0 3.0 — — — — — — —
9,600
bhp 5.23 5.39 5.55 5.71 5.87 6.04 6.24 6.44 6.64 6.80 7.00 7.24 7.43 — — — — — — — —
Sheave/MotorDDDDDDEEEEEEE————————
rpm 904 924 944 964 984 1004 1024 1044 1064 1080 1100 1120 1136 — — — — — — — —
Turns Open 2.5 2.0 1.5 1.0 0.5 0.0 5.5 5.0 4.5 4.0 3.5 3.0 3.0 — — — — — — — —
9,800
bhp 5.505.675.856.026.206.406.606.806.967.167.39——————————
Sheave/MotorDDDDDEEEEEE——————————
rpm 920 940 960 980 1000 1020 1040 1060 1076 1096 1116 ——————————
Turns Open2.01.51.00.50.05.55.04.54.04.03.5——————————
10,000
bhp 5.856.006.186.366.566.766.967.167.32————————————
Sheave/MotorDDDDEEEEE————————————
rpm 940 956 976 996 1016 1036 1056 1076 1092 — — ——————————
Turns Open1.51.00.50.05.55.04.54.04.0————————————
bhp — Brake Horsepower
ESP — External Static Pressure