| Brand | RW Energy |
| Model NO. | DC Short-Circuit Current Limiter |
| Rated voltage | 15kV |
| Rated normal current | 1250A |
| Rated frequency | 50/60Hz |
| Series | DDX1-DC |
The DC Short-Circuit Current Limiter shares the same fast-acting mode and interruption principle as the DDX1 AC product: it limits and interrupts the short-circuit current before the instantaneous value of the short-circuit current rises to the expected peak. The maximum instantaneous value of the actual short-circuit current is much lower than the peak value of the first major half-cycle of the short-circuit current, providing an economical and reasonable short-circuit current solution for DC users in power systems.
Its differences from the AC product lie in three aspects: (1) Sensor; (2) Electronic controller; (3) Fuse.
Main technical parameters
serial number |
Parameter Name |
unit |
Technical parameters |
|
1 |
Rated voltage |
kV |
12-40.5 |
|
2 |
Rated current |
A |
630-6300 |
|
3 |
Rated expected short-circuit breaking current |
kA |
50-200 |
|
4 |
Current limit coefficient = cut-off current / expected short-circuit current peak |
% |
15~50 |
|
5 |
Insulation level |
Power frequency withstand pressure |
kV/1min |
42-95 |
Lightning impact withstand pressure |
kV |
75-185 |
||
Product Usage
Protection of DC transmission and distribution systems
Fast protection of DC system cables, power electronics
