Mô tả

Chổi than lớp E49X Schunk

Than đôi – (10+10)x32x50 mm

Đặc tính của lớp vật liệu:

Grade Material type Voltage drop Coefficient of friction Test conditions Resis- tivity µΩm Rockwell Bending strength N/mm² Bulk density g/cm3 Metal content
%
HR10/40 HR5/40
E49X Electrographite h l 1 55 108 30 1.70

 

Classification Symbol Voltage drop between two carbon brushes connected in series
Uü (V)
Coefficient of friction
µ
Very low vl < 1.5 < 0.08
Low l 1.5 – 2.2 0.08 – 0.15
Medium m 2.2 – 3.0 0.15 – 0.22
High h > 3.0 > 0.22
The grades are classified into the selected ranges on the basis of measurements under test conditions 1–7, which are explained in the following table. On request we are able to supply detailed technical data sheets of our grades, which also
contain information regarding other operating conditions.
No. Current density
A/cm²
Peripheral speed m/s Brush pressure cN/cm² Collector temperature
°C
Related to the following fields of application
of the carbon brushes
1 12 30 250 90 Stationary D.C. machines
with and without commutation aids
2 12 50 250 90 Traction motors
3 10 30 200 90 Three-phase commutator motors
4 6 60 160 90 Turbogenerators and turbomotors
5 20 30 200 90 Slip-ring machines and low-voltage machines
6 16 30 200 90 Slip-ring machines and low-voltage machines
7 12 30 200 90 Slip-ring machines and low-voltage machines

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