LEROY SOMER R250 AVR FOR LEROY SOMER ALTERNATORS

LEROY SOMER AEM110RE019

General Description / Specifications

The SHUNT excitation alternator is auto excited with a R 250 voltage regulator.The regulator controls the excitation current according to the alternator’s output voltage. With a very simple conception, theSHUNT excitation alternator does not have a short circuit capacity.Voltage regulation: around ± 0,5 %.

General Characteristics

> Voltage regulation +/- 0.5% at steady state and constant speed.
> Phase to neutral voltage sensing.
> The regulation quality is independant of load applied.
> Optimum management of impact loads using micro-processor technology.
> Suitable for high levels of vibration and harsh environments.

> 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).
> U/F Fonction and LAM
> Operating at 50 Hz: (U/F gradient)
> Operating at 60 Hz: (U/F gradient)
> Specific operating
> R250 A.V.R. option
> Gradual voltage return function

Applications

Alternators LSA 42.2, 43.2, 44.2, 46.2, 47.2.
Compatible with the SHUNT excitation system.

The R250 is in Compliance with: IEC, VDE, NEMA, BS, CSA, UL508 CE low voltage

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