Product Introduction

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.

Product Features & Advantages

• Fast interruption speed (high-speed): The entire interruption time is less than 10ms.

• Distinct current-limiting characteristic during interruption (current-limiting): Effectively restricts fault current peaks.

• Versatile application scenarios: Suitable for both indoor and outdoor use; can be used independently or integrated into switchgear cabinets as a complete set.

Main technical parameters

Product Usage

• Protection of DC transmission and distribution systems

• Fast protection of DC system cables, power electronics