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DYNAS3 HD

Heavy Duty Series - AC Dynamometer

The DYNAS3 HD series of heavy-duty dynamometers is intended for diesel engines. These machines feature extremely large torques, making them ideal for the output range that characterizes the medium and heavy diesel engines used in the commercial vehicle industry.

The HD product family is available with various cooling concepts. Pure air cooling allows easy installation on low-power machines of the HD product range. The high power AC machines are equipped with water cooling as well as a radial fan.

The HD LC (Heavy Duty Liquid Cooled) series of loading units feature especially powerful torques. They benefit from low noise levels as a result of liquid cooling. In addition, they generate less heat in test rooms due to heat dissipation via the coolant.

Key features

Wide power range from 255 kW up to 1,000 kW for all kinds of heavy-duty test applications
Highest rated torques up to 5,150 Nm
Lower power dynamometers are air cooled for easy installation and upgrading of existing test cells
High power motors are equipped with a radial fan combined with water cooling
Liquid Cooled (LC) version with heat exchanger for better heat dissipation and for noise sensitive applications (NVH)
Measuring flange for highest torque measurement accuracy of real shaft torque

Figures, Data, Facts DYNAS₃ HD

Machine DYNAS₃ HD		HD 255	HD 380	HD 460 (LC)	HD 600 (LC)	HD 670 (LC)	HD 700 (LC)	HD 890	HD 1000
Rated power (absorbing)	[kW]	255	380	462	600	670	700	895	1026
Rated speed (absorbing)	[rpm]	2,032	1,913	1,645	1,449	1,807	1,419	1,660	1,958
Rated torque (absorbing)	[Nm]	1,200	1,898	2,680	3,957	3,542	4,710	5,150	5,001
Rated power (driving)	[kW]	215	330	445	576	665	671	781	988
Rated speed (driving)	[rpm]	1,988	1,869	1,625	1,431	1,793	1,401	1,490	1,942
Rated torque (driving)	[Nm]	1,033	1,686	2,600	3,840	3,542	4,573	5,000	4,856
Overload factor, absorbing, in the basic speed range		1.2	1.2	1.2	1.3	1.19	1.2	1.2	1.16
Maximum speed n_max	[rpm]	5,015	5,070	5,010	4,500	4,500	4,500	4,500	4,480
Power at n_max (absorbing)	[kW]	143	192	296	419	584	440	560	777
Moment of inertia, machine without attachments	[kgm²]	1.3	1.78	6.31	8.84	9.58	10.21	17.55	16.75
Max. speed gradient up to rated speed incl. overload	[rpm/s]	10,450	12,080	4,880	5,520	4,130	5,220	3,320	3,260