1. Stationary DC Machines |
Grade |
| Large machines |
|
| Rolling mill and winding motors, normal |
E92 |
| Rolling mill and winding motors |
E93 |
| |
for difficult commutation |
E55 |
| |
for especially difficult commutation |
E98/E98 |
| Variable-voltage generators for rotary convertors |
E92 |
| |
for difficult commutation |
E59/E98 |
| |
with duplex winding |
E93 |
| Turbo exciter machines, normal |
E55 |
| |
|
| Medium machines |
|
| Motors, normal |
E57 |
| |
for thicker patina formation |
E60/E100 |
| Rolling mill auxilliary drives |
E92 |
| |
for difficult commutation |
E59 |
| |
for frequent underload |
E51/E551/E556 |
| |
|
| Small machines |
|
| Small and medium DC machines |
E28 |
| Difficult commutating small and medium DC machines |
E60/E100 |
| Generators and motors |
|
| |
with interpoles |
E51 |
| |
without interpoles |
P79 |
| Tram motors DC regulating controls |
E62 |
| Small battery-fed motors |
|
| |
for 6 - 12 V |
M14 |
| |
for 12- 24 V |
M16 |
| |
for 24 - 110 V |
E 51 |
| Special machines |
|
| Swivel bearing machines |
E59 |
| Welding machines |
|
| Series wound machines |
E60 |
| |
for thinner patina formation |
E57 |
| |
for small commutation losses |
M16 |
| |
|
2. Mobile DC Machines |
|
| DC traction motors |
|
| Main line and suburban railways |
|
| |
Traction motors with rotary converter feed |
E97 |
| |
Traction motors with rectified feed |
E57 |
| |
Generators for diesel-electric locomotives |
E58 |
| |
Auxiliary drives |
E51 |
| Train lighting generators |
|
| |
over 110 V |
E51 |
| |
below 110 V |
M16 |
| Mine loco motors |
|
| |
for overhead wire operation |
E57 |
| |
|
|
3. Stationary AC and Three Phase Current Machines |
|
| Machines of medium and high power |
|
| Rotor-fed shunt motors |
P75 |
| Three phase commutator motors |
P78 |
| Three phase commutator motors and small DC machines |
RX91 |
| Stator-fed shunt motors |
|
| |
at high transformer voltages and low load |
|
| |
in operation at normal rating |
P75 |
| |
at low transformer voltages and high load |
|
| |
in operation at normal rating |
E57 |
| Series wound motors |
E57 |
| Lydall- (Scherbius) machines |
E55 |
| |
|
| Small machines (Universal or F.H.P. motors) |
|
| Mica undercut |
|
| |
Voltage > 48 V |
|
| |
for heavy mechanical stress |
P79 |
| Mica flush, normal |
C 41 |
| |
|
4. AC Locomotive Motors |
|
| Traction motors for 162/3 cps operation |
E57 |
| Traction motors for 50 cps operation |
E57 |
| |
|
5. Sliprings |
|
| Bronze and Copper rings |
|
| Loads up to 10 A/cm², normal |
E51 |
| |
for poor ventilation |
M16 |
| |
|
| Loads from 10 - 20 A/cm² , normal |
M13 |
| |
depending on the ventilation conditions, peripheral |
M16 |
| |
speed and brush load use one of the grades shown |
M14 |
| |
in the margin |
M12 |
| |
|
|
| Remanite-, Perlite- and spheroidal cast iron rings |
|
| |
up to 10 A/cm² |
E92 |
| |
up to 15 A/cm² |
M13 |
| |
|
|
| Steel rings |
|
| Brush loads up to 10 A/cm² |
|
| |
VR < 35 m/sec |
E92 |
| Brush load above 10 A/cm² |
|
| |
VR < 30 m/sec., normal |
M14 |
| |
use one of the grades shown in the margin |
M13 |
| |
|
|
| |
Earthing rings |
M11 |
| |
|
|
6. Contact carbons |
|
| |
at low loads |
C41 |
| |
at medium loads |
E51 |
| |
at high loads |
M11 |
