Helwig Carbon Products, Inc distributes carbon current collectors made by Pantrac; a joint-venture company of Helwig Carbon. Pantrac uses carbon profiles produced by SGL Carbon GmBh Werk Ringsdorff. Visit Pantrac's website at: www.pantrac.com
Pantrac Carbon Current Collectors have the following advantages:
· Reliability and low Life-Cycle-Cost
· Low wear rate carbon grades RH84 and RH83M6
· Lead free metalized carbon grades for high current load applications RH84M6,
RH83M6, RH85M6
· Bond between carrier and carbon profile is by an electrically conductive glue
Pantrac’s supplies Carbon Current Collectors to:
· Deutsche Bahn
· British Railways
· MTRC Hong Kong
· Bombardier Transportation
Typical properties of our most important carbon grades for carbon current collectors
|
Grade |
Density |
Resistivity |
Hardness |
Flexural strength |
Impregnationg |
|
g/ccm |
µΩmtand µ . m |
HRB 5/150150 |
N/mm2it N/mm2 |
|
RH 84 |
1,73 |
34 |
95 |
37 |
– |
|
RH 84 M6 |
2,4 |
12 |
115 |
65 |
Cu Sn* |
|
RH 83 M6 |
2,8 |
7 |
110 |
95 |
Cu Sn* |
|
RH 85 M6 |
3,4 |
4 |
105 |
105 |
Cu Sn* |
*Cu Sn impregnation up to profile length of 1.150 mm
Typical performance data
|
|
|
Shear strength of the bond: > 5 N/mm2 |
|
Temperature resistance up to 250°C (rated value), up to 300°C (≤ 1min.) |
|
Short- circuit current load up to 30 kA (tested with AC 16 2/3 Hz, half wave) |
|
Contact resistance between carbon profile/Al-carrier |
|
< 1,0 mΩ (plain carbon) |
|
|
|
< 0,5 mΩ (metallized carbon) |
|
Current carrying capacity |
|
Grade RH 84: |
|
5 – 6 A/mm contact line |
|
Grade RH 83 M6 (metallized): |
|
12 –14 A/mm contact line |
|
Grade RH 85 M6 (metallized): |
|
16 –18 A/mm contact line |
|
|
Top Values For Service Life
| |
| |
RH 84: |
Light Railways |
120 - 200 Tkm |
|
| |
|
Long distance trains |
140 - 150 Tkm |
|
| |
|
High speed trains (ICE) |
180 - 220 Tkm |
|
| |
RH 83 M6 |
(High current appl.): |
|
|
| |
|
Light Railways |
60 - 100 Tkm |
|
| |
|
Long distance trains |
120 - 140 Tkm |
|
| |
RH 85 M6 |
(Very high current appl.): |
|
|
| |
|
E.M.U. |
70 - 90 Tkm |
|
| |
