Valid Magnetics Air Cooled / Blower Hysteresis Dynamometer for Motor Test, Torque, Speed and Power

Valid Magnetics Limited

Battery Storage & UPS Valid Magnetics Limited 24 Dec 2025 ( )

Get Your Quote Now : Place of origin : Hong Kong

OverviewHysteresis Brake Dynamometer is designed for testing with low to middle power appliances, especially high-speed motor testing. It is able to provide a complete measurement of a motor from free-running to rotor-locked because the source of torque generated is not coming from speed. There are three brake-cooling methods for our own designed hysteresis brake dynamometers: HD type: cooling by air fan or convection (no external source) AHD type: cooling by compressed airBHD type: cooling by dedicated blower Our hysteresis dynamometers have achieved accuracy ratings of ±1% full scale, depending on size and system configuration. Fine adjustment for optimization can be done with the support of our own invented dynamotmeter controller. It has high cost/performance ratio with small size and simple operation procedure. Customized or special designed of fixing units, based on the customer requirement is possible.

Model	Minimum torque at rated current Kg·cm	Kinetic power(5 minutes)			Kinetic power(Continuous)			(rpm)Max speed	Coolingmode
Model	Minimum torque at rated current Kg·cm	Without air supply	With air supply	With blower	Without air supply	With air supply	With blower	(rpm)Max speed	Coolingmode
HD Type Air Cooling Hysteresis Dynamometer
HD-200	0.02	10	—	—	5	—	—	100000	By Fan
HD-500	0.05	20	—	—	6	—	—	100000	By Fan
HD-101	0.1	35	—	—	8	—	—	300000	By Fan
HD-201	0.2	35	—	—	8	—	—	300000	By Fan
HD-301	0.3	50	—	—	12	—	—	300000	By Fan
HD-501	0.5	50	—	—	12	—	—	300000	By Fan
HD-102	1	90	—	—	25	—	—	25000	By Fan
HD-202	2	90	—	—	25	—	—	25000	By Fan
HD-302	3	250	—	—	65	—	—	25000	By Fan
HD-502	5	250	—	—	65	—	—	25000	By Fan
HD-103	10	400	—	—	80	—	—	25000	By Fan
HD-203	20	580	—	—	120	—	—	25000	By Fan
HD-303	30	700	—	—	150	—	—	25000	By Fan
HD-503	50	1000	—	—	200	—	—	25000	Convection
HD-603	60	140	—	—	300	—	—	25000	Convection
HD-144	140	2000	—	—	700	—	—	12000	Convection
HD-284	280	3800	—	—	1300	—	—	12000	Convection
AHD Type Compressed Air Cooling Hysteresis Dynamometer
AHD-102	1	—	200	—	—	80	—	25000	Comp. Air
AHD-202	2	—	200	—	—	80	—	25000	Comp. Air
AHD-302	3	—	400	—	—	120	—	25000	Comp. Air
AHD-502	5	—	400	—	—	120	—	25000	Comp. Air
AHD-103	10	—	800	—	—	350	—	25000	Comp. Air
AHD-203	20	—	1000	—	—	500	—	25000	Comp. Air
AHD-303	30	—	1300	—	—	800	—	25000	Comp. Air
AHD-503	50	—	1500	—	—	1200	—	25000	Comp. Air
AHD-603	60	—	2500	—	—	1500	—	25000	Comp. Air
AHD-144	140	—	2800	—	—	1800	—	25000	Comp. Air
AHD-284	280	—	5000	—	—	2800	—	25000	Comp. Air
BHD Type Air Blower Cooling Hysteresis Dynamometer
BHD-303	30	—	—	1500	—	—	900	25000	Air Blower
BHD-503	50	—	—	2000	—	—	1800	25000	Air Blower
BHD-603	60	—	—	3200	—	—	2800	25000	Air Blower
BHD-144	140	—	—	3500	—	—	3000	12000	Air Blower
BHD-284	280	—	—	7000	—	—	5500	12000	Air Blower

Technical Specifications

Item	Specifications	Remarks
Update Date	Valid Magnetics Limited	2025
Lead time	within 30 days	Can be expedited
Material	See product manual	Request Inspection Report
Application	Applicable to multiple industries	Complies with standards
Keywords	hysteresis brake,Hysteresis Dynamometer,hysteresis clutch,tensioner,tension meter