Tags:AVR Leroy somer R181 Automatic Voltage Regulator

The R 181 is an AVR designed for ARES or ARCM type compound excitation alternators.

The R 181 is a transistor-controlled AVR. The measured voltage is filtered and rectified. It is not affected by voltage variations caused by non-linear loads. It is totally sealed with an elastomer which protects it from environmental stresses.

R 181 AVR function: - AVR accuracy +/- 1% - Underspeed protection - LAM load shedding system - Parallel operation between alternators by voltage quadrature droop - External potentiometer connection wires, for voltage adjustment (470 ohms: voltage range +/- 5% - 3 W, or 1000 ohms: voltage range +/- 10% - 3 W)

• Wires for CT parallel operation output 1 A - 2.5 VA - 220 V or 400 V power supply - 5 VA voltage sensing isolated via transformer