PROCESS EXPO. Oct. 15 ~ 17, 2007 Booth # 6860, Las Vegas, NV
WEFTEC Oct. 15 ~ 17, 2007 Booth # 4857 Hall C San Diego, CA
National Ground Water Expo. Dec. 4 ~ 7, 2007 Booth # 451 Orlando, FL
Introduction to P Base Vertical Electrical Motor
By: Dennis Rimmel, January 20, 2007
(An unfinished draft. For reference only, not for specification)
Thrust:
APPENDIX A: VSS TYPICAL THRUST RATINGS
HP
FRAME
4 POLE (1800RPM) RATED THRUST ( lbf ) TEFC ENCLOSURE
NORMAL
IN-LINE
100% HI
3
182
390
635
1800
5
184
490
750
1800
7-1/2
213
560
850
2500
10
215
640
900
2500
15
254
640
950
3200
20
256
640
1050
3200
25
284
640
1200
3200
30
286
640
1250
3200
40
324
640
1325
4700
50
326
640
1400
4700
60
364
640
1450
5600
75
365
640
1500
5600
100
405
720
1550
6000
125
444
720
1650
9000
150
445
720
1700
9300
200
447
900
9300
250
449
920
8800
300
449
920
8800
350
449
920
8800
400
5807
1200
9600
500
5807
1200
9600
Note: The majority of In-Line motors are TEFC while the majority of Hi Thrust motors are WP-I enclosure. Since many manufacturers do not offer a “standard” WP-I In-Line motor, the comparison is for TEFC.
Note: VHS is available as HT only and generally has the same thrust rating as VSS HT.
Standard P-Base MOUNTING:
The following mounting criteria for VHS P-base motors are:
Flange BD
Hollow Shaft BX
Pump Head Shaft CD
The BD defines the bolt circle AJ; the register AK; and the bolt hole BF.
The P-Base Flange is a female register fit defined by the AK dimension not the BD dimension. The 16-1/2” and 20” BD flanges actually have the same mounting AK and AJ dimensions.
