Schaltbau contactors ensure safety of vanadium redox flow batteries

DC is the fastest growing and most challenging technology. Schaltbau is one of the few direct-current experts worldwide with decades of expertise. That is why more and more customers are relying on DC components from Schaltbau.

Customer profile

• Application: Energy Storage
• Industry: Renewable Energy
• Country: Singapore

Customer case

• VFlowTech, 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