User`s manual

27
Magtrol WB/PB Dynamometers
Chapter 1 – Introduction
3
MAGTROL
Spec ifications
WB DynaMoMeter ratings
The WB Eddy-Current Dynamometers develop their full power
at high rotation speeds. The 115 Series is particularly intended
* Voltage at 20 °C is 30 volts.
for motors which rotate at high speeds, up to 22,000 rpm. The
braking torque depends on the rotation speed.
eDDy-current DynaMoMeter operating principLes
WB torque–speeD–poWer curves
The diagram below shows the characteristic curves for the 115 Series Eddy-Current Dynamometers.
100 1000 10,000 100,000
0.1
1
100
0.1
1
100
2865 rpm
10
10
18,000 rpm
Speed limit for WB
2 WB 115 (TORQUE)
1 WB 115 (TORQUE)
Rotation Speed (rpm)
Torque (N·m)
Power (kW)
2 WB 115 (POWER)
1 WB 115 (POWER)
Optical Speed Sensor
Each 115 Series WB Dynamometer has an optical speed sensor
with a 60-bit pulse wheel delivered as standard.
Cooling Water Consumption
For all WB models:
 z 30 l/kWh at $t = 30 °C (Metric)
 z 8 gal/kWh at $t = 86 °F (US)
Model
Rated Torque
Drag Torque
De-energized
Nominal Input Inertia
Rated
Power
Rated
Speed
Max. Speed
Excitation
Current*
standard
version
high-speed
version (HS)
N·m lb·ft N·m lb·in kg·m² lb·ft·s² kW rpm rpm rpm A
1 WB 115
50 36.8 0.5 4.43 1.27 × 10
-2
9.36 × 10
-3
15 2865 18,000 22,000 2.5
2 WB 115
100 73.7 1.0 8.85 2.57 × 10
-2
1.89 × 10
-2
30 2865 18,000 22,000 5
WB 115