DC contactors for energy storage systems

Schaltbau contactors ensure safety of vanadium redox flow batteries

Customer profile

  • Company: VFlowTech, Singapore
  • Application: Energy Storage
  • Industry: Renewable Energy

Customer case

  • A leading manufacturer of modular vanadium redox flow batteries for energy storage was looking for an alternative to gas encapsulated contactors.
  • The solution used so far led to recurring field failures resulting in system downtime.
  • A more robust contactor was required to improve system availability.
  • Contactors with reliable signal controlling were important for the system functionality.

Schaltbau solution

Schaltbau DC contactors ensure safe operation by:
  • Being fully bi-directional: Safe disconnection of high powers irrespective of the current direction
  • Having high making capacity Icm up to 4,000 amps leading to increased system availability
  • Excellent breaking capacity: The contactors retain its full function when disconnecting high currents
  • Having low energy consumption and low heating thanks to sophisticated coil saving circuit
  • Providing higher safety due to auxiliary contacts: Mirror contact functionality IEC 60947-4-1, Annex