46
Magtrol Hysteresis Dynamometers
Chapter 4 – Testing
OPERA
TION
TORQUE
SPEED (rpm)
(lb·in)
(N·m)
0
5000
10000
15000
20000
25000
30000
0
0
11
1.24
22
2.48
33
3.72
44
4.96
55
6.20
Figure 4–18 ED 715 Power Absorption Curve
ED-815
Shaft Diameter
1.4995 in / 1.5000 in
(38.087 mm / 38.100 mm)
Shaft Height
11.00 in (279.4 mm)
Torque Range
250 lb·in
280 kg·cm
28.0 N·m
Input Inertia
9.61 × 10
-3
lb·ft·s²
Maximum Speed
12,000 rpm
Maximum Input Power
continuous duty: 6000 W
< 5 minutes:
7000 W
TORQUE
SPEED (rpm)
0
3000
6000
9000
12000
15000
0
0
50
5.6
100
11.3
150
16.8
200
22.4
250
28
(lb·in)
(N·m)
Figure 4–19 ED 815 Power Absorption Curve
4.1.3.2
Cooling Methods
Note:
For additional details on compressed air and blower setup along
with extensive information on the Air Flow Sensor feature, refer
to
Section 3.3.3 – Air Cooling
.
4.1.3.2.1
Compressed Air
Magtrol’s HD-510, 515, 800 and 805 dynamometers are internally ported for compressed air cooling.
Always use the filter and line regulator supplied with the unit. These elements should be installed
