Electronic Regulator R220 Leroy Somer

Leroy Somer R220 is an analog AVR with power controled by transistors. It is designed for small alternators with a SHUNT excitation.

R220 controls the excitation current in order to maintain the output voltage of the alternator. R220 is performant in terms of voltage regulation, simple to set, to use and is reliable.

Characteristics

- Storage : -55°C ; +85°C

- Operation : -40°C ; +65°C

- Voltage regulation: ± 0.5%.

- Voltage supply/sensing range 85 to 139 V (50/60 Hz)

- Rapid response time (500 ms) for a transient voltage variation amplitude of ± 20%

- Voltage setting P1

- Stability setting P2.

- Power supply protected by 8 A fuse, slow-blow action (tolerates 10 A for 10 s)

The fuse is impregnated in the resin, therefore it can not be replaced.

- Frequency: 50 Hz with ST3 jumper - 60 Hz without ST3 jumper.

- The size of the screwdriver tip used to adjust the potentiometer is 2.5 mm.

2.2 - R220 AVR option

Potentiometer for remote voltage adjustment, 1000 Ω / 0.5 W min: adjustment range ± 5%.

- Remove the ST4 jumper