Product Introduction

• The DGK is mainly applied in low-current systems, with a rated current of ＜630A and a rated breaking current of ≤200kA.
  

• The DGK can complete current limiting and interrupt short-circuit current within 10ms, ensuring that the actual current present in the fault circuit is only 15~50% of the expected short-circuit current.
  

• TXB3 = DGK + switchgear cabinets with different configurations. The TXB3 is assembled by connecting the DGK in series with general-purpose switchgear such as vacuum circuit breakers, load switches, or disconnectors. For normal switching operations and operations involving load current or overload current, these are performed via the switchgear (load switches or circuit breakers) integrated in the TXB3 device.
  

• This product not only achieves low-cost interruption of short-circuit current but also eliminates the need to upgrade the dynamic and thermal stability parameters of relevant electrical equipment in branch circuits. Thus, it realizes rational circuit design and reduces the investment cost of project equipment.

Product Features and Benefits

• Fast breaking speed (high speed), the whole breaking time is less than 10ms

• The opening process has obvious current limiting characteristics (current limiting)

• It is mainly used in small rated current systems

• According to the needs of the project, the non-standard cabinet type is assembled, and there are a variety of configuration schemes

• Reduce the cost of a large number of substation replacements of switches and other main equipment

Main technical parameters

Product Usage

• Fast short-circuit protection of power branch bus in hydropower plants, limiting and quickly interrupting high-amplitude short-circuit current, avoiding the use of expensive generator circuit breakers, and improving technical economy

• Large synchronous motor outlet

• For fast breaking and rapid isolation of fault points in feeders prone to short circuit faults