Automatic voltage regulator for Leroy Somer generator: 

1. R448 
*Input voltage: 70-140VAC (PMG)
*Reaction is measured: 90-480V AC
*Max output: 10A 125V DC
*Regulation: +/-0.5%

2. R449 
*Input voltage: 70-140VAC (PMG)
*Reaction is measured: 90-480V AC
*Max output: 12A 125V DC
*Regulation: +/-0.5%

*****438 
*Voltage regulation:  0.5%
*Voltage sensing: 95 to 140 volts (50/60 Hz) or
170 to 260 volts (50/60 Hz) or 340 to 520 volts (50/60 Hz)
*Response time: Normal (1 sec) for  20% voltage variation
or Rapid (0.3 sec) for  20% voltage variation

*****230 
*Voltage regulation: 0.5%
*Short circuit capability: 3 x Irated for 10 seconds 
*Voltage sensing: 95 to 140 volts (50/60 Hz) or 170 to 260 volts (50/60 Hz) or 340 to 520 volts (50/60 Hz)
*Response time: Normal (1 sec) for  20% voltage variation or Rapid (0.3 sec) for ? 20% voltage variation
*Remote voltage adjustment range of:  5%

*****250: 
*Voltage regulation around  0, 5 %.
*Supply range/voltage detection 85 to 139 V (50/60Hz).
*Rapid response time (500 ms) for a transient voltage variation amplitude of? 20 %.
*Voltage setting P1.
*Stability setting P2.
*Supply protected with an 8 A fuse, slow action (supports 10 A for 10 s).