User`s manual

19
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 65 Series is particularly intended
* Voltage at 20 °C is 30 volts.
for motors which rotate at high speeds, up to 30,000 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 65 Series Eddy-Current Dynamometers.
10
100
1
0.1
10
100
1
0.1
100 1000 10,000
30,000 rpm5730 rpm
100,000
Speed Limit for WB
Rotation Speed (rpm)
Torque (N·m)
Power (kW)
2
WB 65 (T
ORQUE)
1
WB 65 (T
ORQUE)
2
WB 65 (PO
WER)
1
WB 65 (PO
WER)
Optical Speed Sensor
Each 65 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 65
10 7.3 0.1 0.88 0.82 × 10
-3
6.04 × 10
-4
6 5730 30,000 50,000 2.5
2 WB 65
20 14.7 0.2 1.77 1.55 × 10
-3
1.14 × 10
-3
12 5730 30,000 50,000 5
WB 65