AVR R448 for Generators

Automatic Voltage Regulator R448  replaces Leroy Somer R448.

PART NUMBERS THE R448 R CAN REPLACE

- LEROY SOMER R448 AVR

- R448 LS/A

- R448 LS/B

- R448 LS/C

- LEROY SOMER AEM110RE016

Features

< ±0.5% Regulation
Load Acceptance Module (LAM)
50 / 60 Hz Selectable
Under Frequency & Exc. Max Protection
Single Phase Or Three Phase Voltage Sensing Optional
Soft Start Voltage Ramping
Normal Rapid Response Time (Option)

Specifications

Sensing Input  Terminal 0-110V = 95 ~ 140V
Terminal 0-240V = 185 ~ 250V
Terminal 0-400V = 310 ~ 540V
Frequency 50/60Hz Single Phase
Power Input Voltage 100 ~ 300 VAC, 1 phase 2 wire
Output Voltage 90VDC @ 220VAC
Current Continuous 8A
Intermittent 12A for 10 sec.
Resistance 10 ~ 100 Ω
Unload Harmonic+Auxiliary Winding  > 40VAC
Full Load Harmonic+Auxiliary Winding  < 180VAC 　 Single Phase 150/180Hz
Voltage Build-up  Harmonic Residual Volt. >5 VAC
Under Frequency Protection  U/F Range 42 ~ 62Hz
External Voltage Adjustment  ±10% @ 1K Ω
EMI Suppression  Internal Electromagnetic Interference Filtering
Voltage Regulation  < ±1% (with 4% engine governing)

Environment

Vibration 1.5G @ 5 ~ 30 Hz 　 5.0G @ 30 ~ 500 Hz
Relative Humidity < 95%
Operating Temperature -40 ~ 60 °C
Storage Temperature -40 ~ 85 °C

AVR Controls

VOLT Voltage Adjustment
STAB Stability Adjustment
V/HZ UFRO Knee Point Set
EXC.MAX Excitation Current Limit
STAT Droop Adjustment