WB23 & WB27 | High-speed Eddy-current Dynamometer

Test stands

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“ MAGTROL offers 3 types of dynamometer brakes to absorb load: Hysteresis (HD Series), Eddy-Current (WB Series) and Magnetic Powder (PBSeries). Each type of Dynamometer has advantages and limitations and choosing the correct one will depend largely on the type of testing to be performed. With over 50 standard models to choose from, Magtrol Sales professionals are readily available to assist in selecting the proper Dynamometer to meet your testing needs. ”

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Presentation

Magtrol’s WB23 and WB27 Eddy-Current Dynamometers are designed for very-high-speed motors and dental or surgical tool testing applications. By providing a braking torque that is proportional to the rotational speed, rated torque is reached at the rated speed.

The Dynamometers feature a low level of inertia, due to small rotor dimensions, and brake cooling is provided by air flow inside the dynamometer housing.

A PT temperature sensor continuously monitors the brake temperature and alarms the DSP7000 Controller to stop the brake excitation current in order to protect the dynamometer from overheating.

Torque is measured by a reaction torque transducer placed on the stator. The dynamometer has a torque measuring accuracy rating of ±0.2% full scale. The speed is measured by an optical sensor and a 2PPR (Pulses Per Revolution) encoder. This sensor measures speeds between 10000rpm and 100000rpm with a full scale accuracy of ±0.06% (using a DSP7000).

Technical features

Torque: 80mN·m and 150mN·m Speed: up to 100000rpm Power: 250W continuous; up to 500W (WB23) or 1kW (WB27) intermittent Low inertia Very low residual torque Stable and smooth braking torque Measuring system with air-bearing Data acquisition via DSP7000 Controller and M-TEST Software Built-in electronics with Torque & Speed measurement

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