Each type of Dynamometer has its advantages and choosing the correct one will depend largely on the type of testing to be performed. Magtrol sales professionals are readily available to assist in selecting the proper dynamometer to meet your testing needs.
| Hysteresis
Brake Dynamometer |
HD Features & Specifications |
| Hysteresis Brake Dynamometers
(HD series) are versatile and ideal for testing in the
low to middle power range (max. 14 kW intermittent duty).
Hysteresis Brakes do not require speed to create torque,
and therefore can provide a full motor ramp from free-run
to locked rotor. Brake cooling is provided by convection
(no external source) or by air (compressed air or dedicated
blower) depending on the model. Hysteresis Dynamometers
have both continuous and intermittent power ratings where
the dynamometer is capable of dissipating more power for
shorter periods of time. All Hysteresis Dynamometers have
accuracy ratings of ±0.25% to ±0.5% full scale, depending
on size and system configuration. Also available are special
designs for high-speed motor testing. |
Other Types of Hysteresis
Dynamometers:
NEW
Micro Dyne
Magtrol's new Micro Dyne is the FIRST and ONLY system designed specifically for testing miniature/micro, low-torque motors.
Engine Dynamometer
Used for testing internal combustion engines up to 10 horsepower
(7.5 kW).
Dial
Weight Dynamometer
Simple to use, reliable, and lower cost dynamometers for
manual motor testing.
| Eddy-Current
Brake Dynamometer |
WB
Features & Specifications |
| Eddy-Current Brake Dynamometers
(WB series) are ideal for applications requiring high
speeds and also when operating in the middle to high power
range. Eddy-Current Brakes provide increasing torque as
the speed increases, reaching peak torque at rated speed.
The Dynamometers have low inertia as a result of small
rotor diameter. Brake cooling is provided by a water circulation
system, which passes inside the stator to dissipate heat
generated by the braking power. The water cooling in the
WB provides high continuous power ratings (max. 140 kW).
The WB Dynamometers have typical accuracy ratings of ±0.3%
to ±0.5% full scale, depending on size and system configuration. |
| Powder Brake Dynamometer |
PB
Features & Specifications |
| Powder Brake Dynamometers
(PB series) are ideal for applications operating in the
low to middle speed range or when operating in the middle
to high torque range. Like Hysteresis Brakes, Powder Brakes
provide full torque at zero speed. Like the Eddy-Current
Brake Dynamometers, the PB series is water-cooled, allowing
for power ratings up to 48 kW. The PB Dynamometers have
typical accuracy ratings of ±0.3% to ±0.5% (±2% for PB
2.7) full scale, depending on size and system configuration. |
Tandem Dynamometer
Magtrol offers Eddy-Current and Powder Dynamometers mounted
in tandem. In tandem, the unique features of each type of dynamometer
brake are utilized, allowing nominal braking torque to be applied
to the unit under test from zero speed to maximum rotation.
The Tandem Dynamometers are available on a number of PB/WB combinations.
|
