Structure of standard DC motors
Type |
||||
|---|---|---|---|---|
1G.5/1H.5 |
1G.6/1H.6 |
1G.7/1H.7 |
1G.5/1H.5 | |
Motor detail |
Frame size 100 to 160 |
Frame size 160 to 280 |
Frame size 355 to 450 |
Frame size 500 and 630 |
Stator | ||||
Iron active part |
Rectangular design |
Rectangular design |
Rectangular design |
Hexagonal design |
Main poles, interpoles and interpole yoke (in solid sheet-metal enclosure for working flux), laminated; compole field is thus designed for quick-response flux change |
Fully laminated, non-enclosed stator core; main and compole field circuit are thus designed for quick-response flux change |
Fully laminated, non-enclosed stator core; main and compole field circuit are thus designed for quick-response flux change |
Fully laminated, non-enclosed stator core; main and compole field circuit are thus designed for quick-response flux change | |
Up to frame size 112: From frame size 132: |
Frame size 160: From frame size 180: |
Main and interpoles screwed on |
Main and interpoles screwed on | |
Windings |
With main pole and interpole winding |
With main pole and interpole winding |
With main pole, interpole and compensation winding |
With main pole, interpole and compensation winding |
Stator and field coils impregnated by dipping |
Stator and field coils impregnated by dipping |
Stator and field coils impregnated by dipping |
Stator and field coils impregnated by dipping | |
No. of poles |
Frame size 100 and 112: From frame size 132 |
No. of poles 4 |
No. of poles 4 |
No. of poles 6 |
Rotor | ||||
Iron active part with commutator |
Laminated rotor core with skewed slots for low noise and torque ripple |
Laminated rotor core with skewed slots for low noise and torque ripple |
Laminated rotor core with skewed slots for low noise and torque ripple |
Laminated rotor core with skewed slots for low noise and torque ripple |
Axial cooling-air ducts for high utilization (from frame size 132) |
Axial cooling-air ducts for high utilization, 1 radial cooling duct also for frame size 160 |
Axial cooling-air ducts for high utilization |
Axial cooling-air ducts for high utilization | |
Commutators for high maximum speeds |
Commutators for high maximum speeds |
Commutators for high maximum speeds |
Commutators for high maximum speeds | |
Friction-locked connection laminated core - shaft for high torque impulses |
Friction-locked connection for frame size 160 and keyed (shaft key) connection laminated core - shaft for high torque impulses from frame size 180 upwards |
Keyed (shaft key) connection laminated core - shaft for high torque impulses |
Keyed (shaft key) connection laminated core - shaft for high torque impulses | |
Dynamically balanced rotor |
Dynamically balanced rotor |
Dynamically balanced rotor |
Dynamically balanced rotor | |
Windings |
Trickle-impregnated rotor winding (protection against brush dust and moisture) |
Frame size 160: From frame size 180: |
Fully sealed, dipped rotor winding (increased protection against severe environmental conditions) |
Fully sealed, dipped rotor winding (increased protection against severe environmental conditions) |
End shields | ||||
Frame size 100: Die-cast aluminium end shields. From frame size 112: Grey cast-iron end shields for modular mounting of separate fan unit, duct connection, servicing covers and for different types of construction |
Grey cast-iron end shields for modular mounting of separate fan unit, duct connection, servicing covers and for different types of construction |
Grey cast-iron end shields for modular mounting of separate fan unit, duct connection, servicing covers and for different types of construction |
Disk-type end shields made of steel, | |
Condensate drain holes |
Condensate drain holes |
Condensate drain holes |
Condensate drain holes (in unit) | |
Brushgear, commutation | ||||
Brush holders |
Coiled-strip spring holder |
Pressure finger holder |
Pressure finger holder |
Coiled-strip spring holder or pressure finger holder |
Brush monitoring |
Limit value monitoring with microswitch and pressure finger holder |
Limit value monitoring with microswitch |
Limit value monitoring with microswitch |
Signalling brushes |
Carbon brushes |
Top-cushioned brushes for low-vibration operation. Adjusted brush quality |
Top-cushioned brushes for low-vibration operation. Adjusted brush quality |
Top-cushioned brushes for low-vibration operation. Adjusted brush quality |
Top-cushioned brushes for low-vibration operation. Adjusted brush quality |
Commutation |
Almost sparkless commutation with converter connection even in the overload range due to optimized compole field, magnetic decoupling of the main and compole field circuit and rotor windings with very good commutation characteristics. Brush life is thus considerably Ionger. | |||
Connection system | ||||
Terminal box |
Die-cast aluminium terminal box with terminal stud for cable connection |
Die-cast aluminium terminal box for frame size 160, Grey cast-iron box for frame size 180 upwards with removable cable entry plate to facilitate connection with large cable cross-sectional areas |
Die-cast aluminium terminal box with removable cable entry plate to facilitate connection with large cable cross-sectional areas |
Grey cast-iron box with removable cable entry plate to facilitate connection with large cable cross-sectional areas |
Modular design enables terminal box to be mounted in different ways |
Modular design enables terminal box to be mounted in different ways |
Modular design enables terminal box to be mounted in different ways |
Terminal box can be mounted on the right or left | |
Ventilation | ||||
Standard air flow direction from non-drive end to drive end for intensive commutator ventilation, air flow direction from drive end to non-drive end also possible |
Standard air flow direction from non-drive end to drive end for intensive commutator ventilation, air flow direction from drive end to non-drive end also possible |
Standard air flow direction from non-drive end to drive end for intensive commutator ventilation, air flow direction from drive end to non-drive end also possible |
Standard air flow direction from non-drive end to drive end for intensive commutator ventilation, air flow direction from drive end to non-drive end also possible | |
DURIGNIT 2000 insulation system
The insulation consists mainly of plastic materials with a high thermal overload capacity and resistance to tracking. It also meets the requirements placed on motors that are operating in tropical conditions (humid and hot climate).
Temperature class F (overtemperature limit 105 K at a cooling medium temperature of 40 °C) is used for 1G.5/1H.5 motors (1HA5 motors, temperature class H in the stator). The output must be reduced by 13 % to 87 % when the motors are used in accordance with temperature class B (speed 106 % only with frame sizes 100 to 160).
Temperature cIass H (overtemperature limit 125 K at a cooling medium temperature of 40 °C) is used for 1G.6/1H.6 motors. The output must be reduced by 8 % to 92 % when the motors are used in accordance with temperature class F (speed 103 %).
Windings, magnetic circuit, current rate of rise and commutation
Field winding
In the standard version, all motors are provided with a field winding for separate field excitation.
The standard field voltage is 310 V (refer to section "Field").
Interpole winding
All motors have an interpole winding.
Compensation winding
Motors, frame sizes 355 to 630 have a compensating winding as standard.
Magnetic circuit, current rate of rise
The stator yoke, armature, main and interpoles are laminated.
All motors have a fully laminated magnetic circuit and are, therefore, especially suitable for converter operation. Current rates of rise up to 250IN/s are permissable for dynamic processes.
Commutation, brush material
In addition to pure design criteria, the commutation function depends especially on the operating and ambient conditions of the DC motor. Even critical applications can be handled by selecting suitable brush materials.
The standard brush material has the following application restrictions:
- Changing load operation, 50 % to 150 %
- Relative air humidity 10 % to 50 %1)
- Cooling air temperature ? 10 °C (refer to section "Other operating and ambient conditions")
- Cooling air without any solid particles (filter or higher degree of protection) and aggressive substances
- The maximum permissible external vibration levels, as specified on section "Mechanical performance, vibrations", should be observed.
1) The following relationships exist at 40 °C:
Relative air humidity % |
Absolute air humidity g water/m3 air |
|---|---|
10 |
5 |
50 |
25 |
85 |
40 |
Приводная техника