19
Table 10 — 50RTP12 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
1.6
1.7
1.8
1.9
2.0
3600
bhp
0.86
0.93
1.01
1.10
1.18
1.26
1.36
1.46
1.57
1.68
1.77
1.86
1.94
2.03
2.14
2.27
2.38
2.52
2.70
2.86
3.04
Sheave/Motor
B
B
B
B
B
A
A
A
A
A
A
A
C
C
C
C
C
C
C
C
E
rpm
640
672
704
732
760
788
816
840
868
896
924
952
980
1008 1036 1068 1096 1124 1160 1192 1228
Turns Open
5.5
5.0
4.0
3.0
2.0
6.0
5.0
4.5
3.5
3.0
2.0
1.5
6.0
5.5
5.0
4.5
4.0
3.5
3.0
2.5
2.0
3800
bhp
1.06
1.15
1.24
1.33
1.41
1.51
1.59
1.69
1.77
1.87
1.95
2.03
2.13
2.23
2.36
2.49
2.60
2.74
2.88
3.04
3.18
Sheave/Motor
B
B
B
B
A
A
A
A
A
A
A
A
C
C
C
C
C
C
C
E
E
rpm
672
704
732
760
788
816
840
868
892
920
944
968
996
1020 1048 1076 1100 1128 1156 1188 1216
Turns Open
5.0
4.0
3.0
2.0
6.0
5.0
4.5
3.5
3.0
2.0
1.5
1.0
6.0
5.5
5.0
4.0
3.5
3.0
2.5
2.0
2.0
4000
bhp
1.23
1.31
1.41
1.51
1.61
1.69
1.77
1.87
1.96
2.04
2.13
2.22
2.32
2.44
2.56
2.70
2.81
2.92
3.04
3.16
3.30
Sheave/Motor
B
B
B
A
A
A
A
A
A
A
A
C
C
C
C
C
C
C
E
E
E
rpm
708
732
760
788
816
840
864
892
916
940
964
988
1012 1036 1060 1088 1112 1136 1164 1192 1216
Turns Open
4.0
3.0
2.0
6.0
5.0
4.5
4.0
3.0
2.5
1.5
1.0
6.0
5.5
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
4200
bhp
1.25
1.4
1.59
1.71
1.79
1.87
1.97
2.06
2.14
2.24
2.34
2.44
2.55
2.66
2.75
2.86
3.00
3.12
3.25
3.38
3.52
Sheave/Motor
B
B
A
A
A
A
A
A
A
A
C
C
C
C
C
C
E
E
E
E
E
rpm
696
736
784
816
840
864
892
916
936
960
984
1008 1032 1056 1076 1100 1124 1148 1172 1196 1220
Turns Open
3.5
3.0
6.0
5.0
4.5
4.0
3.0
2.5
2.0
1.0
6.0
5.5
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.5
4400
bhp
1.56
1.69
1.79
1.88
1.96
2.04
2.14
2.24
2.35
2.45
2.54
2.65
2.74
2.85
2.96
3.07
3.20
3.34
3.45
3.59
3.74
Sheave/Motor
B
A
A
A
A
A
A
A
A
C
C
C
C
C
C
E
E
E
E
E
E
rpm
752
784
812
836
860
884
908
932
956
980
1000 1024 1044 1068 1092 1112 1136 1160 1180 1204 1228
Turns Open
2.5
6.0
5.0
4.5
4.0
3.0
2.5
2.0
1.0
6.0
6.0
5.5
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
4600
bhp
1.77
1.88
1.96
2.05
2.13
2.22
2.33
2.42
2.53
2.62
2.75
2.85
3.00
3.11
3.22
3.32
3.44
3.54
3.64
3.78
3.92
Sheave/Motor
B
A
A
A
A
A
A
A
A
C
C
C
E
E
E
E
E
E
E
E
E
rpm
780
808
832
856
880
904
928
948
972
992
1016 1036 1060 1084 1104 1124 1148 1168 1188 1212 1232
Turns Open
1.5
5.5
4.5
4.0
3.5
2.5
2.0
1.5
1.0
6.0
5.5
5.0
4.5
4.0
3.5
3.0
2.5
2.0
2.0
1.5
1.0
4800
bhp
1.98
2.08
2.17
2.27
2.37
2.48
2.57
2.67
2.76
2.89
3.00
3.11
3.22
3.33
3.44
3.55
3.68
3.79
3.9
4.04
4.18
Sheave/Motor
A
A
A
A
A
A
A
A
C
C
E
E
E
E
E
E
E
E
E
E
E
rpm
808
832
856
880
904
928
948
972
992
1016 1036 1056 1076 1096 1116 1136 1160 1180 1200 1220 1240
Turns Open
5.5
4.5
4.0
3.5
2.5
2.0
1.5
1.0
6.0
5.5
5.0
4.5
4.0
3.5
3.5
3.0
2.5
2.0
1.5
1.0
1.0
5000
bhp
2.18
2.30
2.41
2.52
2.61
2.71
2.80
2.89
3.01
3.12
3.23
3.34
3.46
3.57
3.69
3.81
3.93
4.05
4.18
4.32
—
Sheave/Motor
A
A
A
A
A
A
A
C
E
E
E
E
E
E
E
E
E
E
E
E
—
rpm
828
856
880
904
924
948
968
988
1012 1032 1052 1072 1092 1112 1132 1152 1172 1192 1212 1232
—
Turns Open
4.5
4.0
3.5
2.5
2.0
1.5
1.0
6.0
5.5
5.0
4.5
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.5
1.0
—
5200
bhp
2.41
2.50
2.60
2.72
2.82
2.94
3.04
3.17
3.29
3.44
3.58
3.70
3.82
3.92
4.01
4.13
4.23
4.33
4.47
—
—
Sheave/Motor
A
A
A
A
A
A
E
E
E
E
E
E
E
E
E
E
E
E
E
—
—
rpm
852
876
900
924
944
968
988
1012 1032 1056 1080 1100 1120 1136 1152 1172 1188 1204 1224
—
—
Turns Open
4.0
3.5
2.5
2.0
1.0
1.0
6.0
5.5
5.0
4.5
4.0
4.0
3.0
3.0
2.5
2.0
2.0
1.5
1.0
—
—
5400
bhp
2.64
2.75
2.87
3.00
3.10
3.20
3.30
3.41
3.52
3.63
3.74
3.86
4.00
4.11
4.25
4.39
4.53
4.64
4.78
—
—
Sheave/Motor
A
A
A
D
D
E
E
E
E
E
E
E
E
E
E
E
E
E
E
—
—
rpm
876
900
924
944
968
988
1008 1028 1048 1068 1088 1108 1128 1144 1164 1184 1204 1220 1240
—
—
Turns Open
3.5
3.0
2.0
1.5
1.0
6.0
5.5
5.0
5.0
4.5
4.0
3.5
3.0
2.5
2.5
2.0
1.5
1.0
1.0
—
—
5600
bhp
2.88
2.98
3.10
3.20
3.32
3.42
3.54
3.66
3.78
3.90
4.03
4.14
4.28
4.42
4.53
4.67
4.78
4.92
—
—
—
Sheave/Motor
A
D
D
D
E
E
E
E
E
E
E
E
E
E
E
E
E
E
—
—
—
rpm
896
916
940
960
984
1004 1024 1044 1064 1084 1104 1120 1140 1160 1176 1196 1212 1232
—
—
—
Turns Open
3.0
2.5
1.5
1.0
6.0
5.5
5.5
5.0
4.5
4.0
3.5
3.0
3.0
2.5
2.0
1.5
1.5
1.0
—
—
—
5800
bhp
3.12
3.25
3.36
3.47
3.60
3.72
3.84
3.96
4.08
4.18
4.31
4.45
4.56
4.70
4.84
4.96
—
—
—
—
—
Sheave/Motor
D
D
D
E
E
E
E
E
E
E
E
E
E
E
E
E
—
—
—
—
—
rpm
912
936
956
976
1000 1020 1040 1060 1080 1096 1116 1136 1152 1172 1192 1208
—
—
—
—
—
Turns Open
2.5
2.0
1.0
6.0
6.0
5.5
5.0
4.5
4.0
4.0
3.5
3.0
2.5
2.0
1.5
1.5
—
—
—
—
—
6000
bhp
3.36
3.49
3.63
3.74
3.86
3.99
4.12
4.25
4.37
4.48
4.62
4.76
4.88
—
—
—
—
—
—
—
—
Sheave/Motor
D
D
D
E
E
E
E
E
E
E
E
E
E
—
—
—
—
—
—
—
—
rpm
928
952
976
996
1016 1036 1056 1076 1096 1112 1132 1152 1168
—
—
—
—
—
—
—
—
Turns Open
2.0
1.5
1.0
6.0
5.5
5.0
4.5
4.0
3.5
3.5
3.0
2.5
2.0
—
—
—
—
—
—
—
—
bhp —
Brake Horsepower
ESP —
External Static Pressure
