|
Description |
Specs of commutator |
Technical parameters |
|
Hot-state overspeed revolution test
(220±5)℃ |
Outside diameter
Φ28mm以下
Less than Φ28mm |
Rotate speed is 45000 RPM. Last ten minutes. |
Radial transformation is less than 0.01mm |
|
Outside diameter
Φ28mm~Φ32mm |
Rotate speed is 40000 RPM. Last ten minutes. |
|
Outside diameter
Φ32mm~Φ40mm |
Rotate speed is 35000 RPM. Last ten minutes. |
|
Outside diameter
>Φ40mm |
Rotate speed is 30000 RPM. Last ten minutes. |
|
Limit deviation of the commutator internal hole |
All specs |
With bushes: H7
Without bushes: H8 |
|
Deviation of the reversing piece to commutator axes |
All specs |
Nominal insulation thickness between pieces is less than 1/3 |
|
Dielectrical strength |
All specs |
Between pieces 400V/1S
Piece to hole 4000V/60S |
Without breakdown and short |
| Insulation resistance |
All specs |
Insulation resistance between the room temperature commutator piece and internal hole≥MΩ |