M AGTROL HD / ED Data Sheet HD Hysteresis Dynamometers ED Engine Dynamometers HD FEATURES ED FEATURES • • • • • • • • • • 16 Standard Models with Maximum Torque from 2.5 oz·in to 500 lb·in (18 mN·m to 56.5 N·m) Hysteresis Braking System: provides precise torque loading independent of shaft speed Motor Testing: from no load to locked rotor Standard Torque Units: English, Metric and SI Accuracy: ±0.25% to ± 0.5% (full scale) Air Flow Sensor: For protection against overheating and operator error Base Plates: available in long or short versions Custom Dynamometers: for special torque and speed requirements Easy Calibration • • • • • • • • • • Maximum Torque: from 55 lb·in to 250 lb·in (6.5 N·m to 28 N·m) Hysteresis Braking System Motor Testing: from no load to locked rotor Standard Torque Units: English, Metric & SI available Accuracy: ±0.25% (full scale) Blower Cooled: to maximize heat dissipation Air Flow Sensor: for protection against overheating and operator error Specially Reinforced Load Cell: stainless steel pin at contact point prevents premature wear from excess vibration Larger Shaft: for additional strength Gusseted Pillow Blocks: for additional front and rear support Easy Calibration HD DESCRIPTION ED DESCRIPTION Hysteresis Brake Dynamometers (HD Series) are versatile and ideal for testing in the low to medium power range (maximum 14 kW intermittent duty). With a Hysteresis Braking system, the Dynamometers 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), by compressed air or by dedicated blower, depending on the model. All Magtrol Hysteresis Dynamometers have accuracy ratings of ± 0.25% to ± 0.5% full scale — depending on size and system configuration. With Magtrol’s Engine Dynamometers, high performance motor testing is available to manufacturers and users of small engines. Magtrol’s Engine Dynamometers have been designed to address the severe, high vibration conditions inherent in internal combustion engine testing. Magtrol’s Engine Dynamometers are highly accurate (± 0.25% of full scale) and can be controlled either manually or via a PC based Controller. For a small engine test stand, Magtrol offers a full line of controllers, readouts and software. To better integrate dynamometers into systems, Magtrol offers both long and short base plates. The shorter base plate facilitates easier motor Model HD-710 mounting when used with T-slot tables Hysteresis Dynamometer and Magtrol Adjustable Motor As with all Magtrol Hysteresis Dynamometers, with long base plate Fixtures, where as the long base engine loading is provided by Magtrol’s Hysteresis plates are better suited for table Brake, which provides: torque independent of speed, top testing. including full load at 0 rpm; excellent repeatability; frictionless torque with no wearing parts (other than bearings); and long operating life with low maintenance. Magtrol HD APPLICATIONS provides a NIST traceable certificate of calibration, and calibration beam with each Engine Dynamometer. Magtrol motor test systems can be found in test labs, at inspection stations, and on the manufacturing floors of most of the world’s leading manufacturers, users and certifiers of small ED APPLICATIONS to medium sized electric, pneumatic and hydraulic motors, The Engine Dynamometers are ideally suited for emissions as well as internal combustion engines. Magtrol supplies testing as set forth in CARB and EPA Clean Air Regulations. motor test systems for a wide array of industries including: The Dynamometers will offer superior performance on the Appliance, Automotive, Aviation, Computer, HVAC, Lawn production line, at incoming inspection or in the R&D lab. and Garden, Medical and Dental, Electric Motor, Office Equipment and Power Tools. www.magtrol.com 1

Principles and Selection OPERATING PRINCIPLES HD / ED DYNAMOMETER SELECTION POLE STRUCTURE SHAFT Magtrol’s Hysteresis Dynamometers cover a wide range of Torque, Speed and Mechanical Power ratings. To select the appropriate size Dynamometer for your motor testing needs, you will need to determine the Maximum Torque, Speed and Power applied to the Dynamometer. BALL BEARINGS Maximum Torque ROTOR (Drag Cup) FIELD COIL HUB AIR GAP Magtrol Hysteresis Dynamometers absorb power with a unique Hysteresis Braking System which provides frictionless torque loading independent of shaft speed. The Hysteresis...

Ratings HD-810 HD-805 HD-815 HD-825 5N** 6N 7N 8N 5N** 6N 7N 8N 5N** 6N 7N 8N 5N** 6N 7N 8N HD / ED 14.00 N·m 125.0 lb·in 140.0 kg·cm 14.00 N·m 28.0 N·m 250 lb·in 280 kg·cm 28.0 N·m 28.0 N·m 250 lb·in 280 kg·cm 28.0 N·m 56.5 N·m 500 lb·in 565 kg·cm 56.5 N·m 0.10 N·m 0.8 lb·in 1.0 kg·cm 0.10 N·m 0.14 N·m 1.2 lb·in 1.5 kg·cm 0.14 N·m 0.14 N·m 1.2 lb·in 1.5 kg·cm 0.14 N·m 0.22 N·m 3.5 lb·in 4.0 kg·cm 0.22 N·m 4.43 × 10-3 6.01 × 10-3 8.81 × 10-3 1.19 × 10-2 8.81 × 10-3 1.85 × 10-2 3,500 Blower  3,000 12,000 5,300 3,000 Compressed Air * 12,000 1.19 × 10-2 7,000 6,000 12,000 2.51 × 10-2 14,000 12,000...

Ratings HD / ED ELECTRICAL POWER AND FUSES Model HD-1XX-XN HD-1XX-XNA HD-4XX-XN HD-4XX-XNA HD-5XX-XN HD-5XX-XNA HD-800-XN HD-800-XNA HD-810-XN HD-810-XNA HD-805-XN HD-805-XNA HD/ED-815-XN HD/ED-815-XNA HD-825-XN HD-825-XNA Voltage 120 V 240 V 120 V 240 V 120 V 240 V 120 V 240 V 120 V 240 V 120 V 240 V 120 V 240 V 120 V 240 V VA 30 30 30 30 30 30 65 65 65 65 130 130 130 130 N/A N/A Style UL/CSA IEC UL/CSA IEC UL/CSA IEC UL/CSA IEC UL/CSA IEC UL/CSA IEC UL/CSA IEC N/A N/A 300 mA 125 mA 300 mA 125 mA 300 mA 125 mA 800 mA 315 mA 800 mA 315 mA 1.25 A 630 mA 1.25 A 630 mA N/A N/A Rating 250 V 250 V...