IAV Time Delay Voltage Relay

The Type IAV relays are single phase induction disk relays designed to respond, with time delay, to either an increasing or a decreasing voltage, or both. Some models are frequency compensated, and some include an instantaneous unit (hinged armature type). Most models listed in the Selection Guide include a target seal-in unit on all contacts.

Applications 
  • AC generators (including Hydro)
  • Distribution feeder
Protection and Control 
  • Generator overvoltage
  • Feeder under and overvoltage
Available IAV models:
  • IAV51, IAV52, IAV53, IAV54 & IAV55
  • IAV69
  • IAV70 & IAV71
Manufacturing for the following models have been discontinued:
  • IAV57 - Manufacturing has been discontinued. As an alternative, please refer to Multilin Agile 94V, IAV51-55 or IAV69-71.
  • IAV63 - Manufacturing has been discontinued. As an alternative, please refer to Multilin Agile 94V, IAV51-55 or IAV69-71.
  • IAV72 - Manufacturing has been discontinued. As an alternative, please refer to Multilin Agile 94V, IAV51-55 or IAV69-71.
  • IAV73 - Manufacturing has been discontinued. As an alternative, please refer to Multilin Agile 94V, IAV51-55 or IAV69-71.
  • IAV74 - Manufacturing has been discontinued.
  • IAV99 - Manufacturing has been discontinued. As an alternative, please refer to Multilin Agile 94V, IAV51-55 or IAV69-71.

IAV Time Delay Voltage Relay

The Type IAV relays are single phase induction disk relays designed to respond, with time delay, to either an increasing or a decreasing voltage, or both. Some models are frequency compensated, and some include an instantaneous unit (hinged armature type). Most models listed in the Selection Guide include a target seal-in unit on all contacts.

Applications 
  • AC generators (including Hydro)
  • Distribution feeder
Protection and Control 
  • Generator overvoltage
  • Feeder under and overvoltage
Available IAV models:
  • IAV51, IAV52, IAV53, IAV54 & IAV55
  • IAV69
  • IAV70 & IAV71
Manufacturing for the following models have been discontinued:
  • IAV57 - Manufacturing has been discontinued. As an alternative, please refer to Multilin Agile 94V, IAV51-55 or IAV69-71.
  • IAV63 - Manufacturing has been discontinued. As an alternative, please refer to Multilin Agile 94V, IAV51-55 or IAV69-71.
  • IAV72 - Manufacturing has been discontinued. As an alternative, please refer to Multilin Agile 94V, IAV51-55 or IAV69-71.
  • IAV73 - Manufacturing has been discontinued. As an alternative, please refer to Multilin Agile 94V, IAV51-55 or IAV69-71.
  • IAV74 - Manufacturing has been discontinued.
  • IAV99 - Manufacturing has been discontinued. As an alternative, please refer to Multilin Agile 94V, IAV51-55 or IAV69-71.