Eddy-Current Dynamometers | WB Series

DESCRIPTION
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, providing high continuous power ratings (max. 140 kW). WB Series Dynamometers integrate a torque measuring system with an accuracy ratings of ± 0.3 % to ± 0.5 % full scale, depending on size and system  configuration.

OPERATING PRINCIPLES
The WB Eddy-Current Dynamometers develop their full power at high rotation speeds. The WB Series is particularly intended for motors which rotate at high speeds, up to 80 000 rpm (up to 100 000 rpm with WB 23 / 27; see specific datasheet). The braking torque depends on the rotation speed.
 
APPLICATIONS
Mounted on test benches, the WB Series Eddy-Current Dynamometers allow performance and reliability testing on driving elements such as servomotors, micromotors for cameras, fans, drills, combustion engine, pumps, pneumatic equipment, hydraulic transmission systems, gas turbines, spindles, compressors and motors for domestic appliances.

OPTICAL SPEED SENSOR
Each WB Series Dynamometer is equipped with an optical speed sensor delivered as standard. WB 32 is equipped with a 4 PPR (Pulses Per Revolution) encoder, WB 43 and WB 65 HS are equipped with a 30 PPR encoder; WB 65, WB 115 & WB 15 are equipped with a 60 PPR encoder.

DYNAMOMETER CONFIGURATIONS
The Dynamometers can be complemented by various electronic modules such as the DES Series (Power Supply),
TSC Series (Torque & Speed Conditioner) and DSP 7010 (High Speed Programmable Dynamometer Controller).
 
Magtrol also offers In-Line Torque Transducers (TS 100 Series or TM 300 Series) or Torque Flange (TF 300 Series) for
extremely accurate torque and speed measurement with high noise immunity. For a dynamic, high-precision system,
the torque transducer can be mounted in line between the unit under test and the dynamometer, providing a torque
accuracy of 0.1 %.