OTHER SUPERIOR PRODUCTS

SIMILAR PRODUCTS

Why choose a D.C. motor ?
Many applications call for a high start-up torque. The D.C. motor, by its very nature, has a high torque vs. falling speed characteristic and this enables it to deal with high starting torques and to absorb sudden rises in load easily. The speed of the motor adjusts to the load. Furthermore, the D.C. motor is an ideal way of achieving the miniaturisation designers are constantly seeking because the efficiency it gives is high compared with other designs.

Design of Crouzet D.C. motors
 Safety
Crouzet D.C. motors are designed and manufactured for integration into equipment or machines which meet, for example, the requirements of the machinery standard : EN 60335-1 (IEC 335-1, “Safety of domestic electrical appliances”). Integration of Crouzet D.C. motors into equipment or machines should, as a rule, take the following motor characteristics into account :
 no ground connection
 so-called «principal insulation» motors (single insulation)

EC LOW VOLTAGE DIRECTIVE 73/23/EEC OF 19/02/73 :
Crouzet D.C. motors and geared motors are not covered by this directive (LVD 73/23/EEC applies to voltages greater than 75 VDC).
 Electromagnetic compatibility (EMC)
Crouzet Ltd can provide the EMC characteristics of the various types of product on request.
EC DIRECTIVE 89/336/EEC OF 03/05/89,
“ELECTROMAGNETIC COMPATIBILITY” : D.C. motors and geared motors are considered as components meant for integration into other equipment and therefore fall outside its field of application. However, these products are designed in compliance with
EMC characteristics and consequently can be incorporated in equipment having to comply with the EMC directive.

How to select from the Crouzet range
The motor unit is selected according to the required output power. Depending on the required speed, a direct motor or a geared motor is
selected.
Speeds 1,000 to 5,000 rpm Direct motor
Speeds below 500 rpm Geared motor
The gearbox is selected depending on the maximum required torque and the duty cycle.
Definition of the D.C. motor
This motor follows linear laws of operation and because of this it is easier to fully exploit its characteristics compared to synchronous or asynchronous motors.