User Manual for BPS-200
www.levitronix.com
PL-4012-00, Rev07, DCO# 20-144
14
Figure 16: Temperature curves of motor BSM-1.x with air cooling module ACM-1.1
(Pump head LPP-200.1, representative for LPP-200.11, liquid. temp = 90
0
C, Air Cooling Module ACM-1.1 with 0.5 bar air at 20
0
C)
Figure 17: Influence of liquid temperature on motor temperature
(Measurement at 7000 rpm 11 lpm but gradients are representative for other operational points)
The above curves are measurements of the motor temperature at certain liquid and ambient temperatures.
Equation
shows how to calculate the motor temperature for other liquid and ambient temperatures
based on these curves.
77
97
117
137
157
177
197
0.0
1.0
2.0
3.0
4.0
5.0
6.0
25
35
45
55
65
75
85
95
0.0
2.5
5.0
7.5
10.0
12.5
15.0
17.5
20.0
22.5
25.0
[F]
[gallons/min]
[
0
C]
[liters/min]
Ambient Temp = 25 C
Liquid Temp. = 90 C
Specific gravity = 1 g/cm3
Viscosity = 0.7 cP
Air cooling with ACM-1.1
0.5 bar, ~20 C air
9000 rpm
Absolute Temp. Limit
Recommended Operational Limit
8000 rpm
7000 rpm
6000 rpm
10000 rpm
— Supply = 24 VDC
- - - Supply = 48 VDC
y = 0.49x + 51.821
y = 0.28x + 28.853
77
97
117
137
157
177
197
77
87
97
107
117
127
137
147
157
167
177
187
25
35
45
55
65
75
85
95
25
30
35
40
45
50
55
60
65
70
75
80
85
90
[F]
[F]
[
0
C]
Liquid Temperature in [
0
C]
Ambient Temp = 25 C
Specific gravity = 1 g/cm3
Viscosity = 0.7 cP
No active cooling:
Temperature Gradient = 0.49
(Liquid vs motor temperature)
Absolute Temp Limit
Active cooling with ACM-1.1 0.5 bar:
Temperature Gradient = 0.28
(Liquid vs motor temperature)