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Valid Magnetics Limited
[Hong Kong]
Overview
Hysteresis 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 air
BHD 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.
Customized System for motor testing is available!
| Model | Minimum torque at rated current Kg·cm |
Kinetic power(5 minutes) | Kinetic power(Continuous) | (rpm)Max speed | Coolingmode | ||||
| Without air supply | With air supply | With blower | Without air supply | With air supply | With blower | ||||
| 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 |
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