Automatic Source Transfer (AST)


Cooper Power Systems Automatic Source Transfer (AST) application automatically transfers to an alternate source for critical loads when a loss of voltage event occurs. Form 6 controls communicate via PeerComm, Cooper’s high-speed, peer-to-peer protocol. Multiple communications options are available, allowing reclosers to be several miles apart. Automatic Source Transfer allows Form 6 controls to retain their overcurrent protection capabilities.

AST Application Requirements

  • NOVA, VSA or VWE 3-phase reclosers
  • Form 6 controls
  • Source- and load-side Potential Transformer (PT) for control power

Communication Options

  • Single or multi-mode fiber optics (Serial or Ethernet)
  • RS-232/RS-485

Radio Options

  • Preferred MDS and Ethernet radios