Leroy Somer R250 AVR

Product Code: R250

R250 is an analog AVR with power controlled by transistors. It is designed for small alternators with a SHUNT excitation. R250 controls the excitation current in order to maintain the output voltage of the alternator. R250 is performant in terms of voltage regulation, simple to set, to use and is reliable.






  • Voltage regulation : ± 0.5 %.
  • U/F function.
  • LAM function.
  • Quick response : 500 ms.
  • Nominal excitation current : 5A.
  • Maximum excitation current : 7A during 10 s.
  • Supply range / voltage detection : 85 to 139 V (50/60Hz).
  • Protection : fuse 8A.

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