AVR M40FA640A Voltage Regulator for Generator


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Substitute Marelli Generator AVR M40FA640A
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SKU: AVR_M40FA640A/A Category: Tags: ,


The AVR M40FA640A MARK I Voltage Regulator is suitable for Synchronous Generators of MARELLI MOTORI MJB series alternators, size range 160-500 frames. This regulator is proper to operate on machines rated from 10 up to 2000 kVA. The regulator is fully insulated in order to maintain high reliability also with severe ambient conditions (high level of humidity, dust, salt atmosphere),and in case of high vibrations level. The regulator is proper both for single and 3-phase operation.


REGULATION ACCURACY: ±0.5%  steady state conditions, for rated Voltage and PF

VOLTAGE DRIFT: ±0.5% of voltage change for 50°C T amp change

RESPONSE TIME:  1 cycle  (20ms-16.6ms)


EXCITER FIELD RESISTANCE:  3.5Ω (min) ÷ 20Ω (max)

INPUT/OUTPUT DATA of M40FA640A Marelli Generator AVR:

-PROVIDE VOLTAGE:  170 – 277V (50/60Hz)

-POWER PROVIDE:  1000 VA (max)


-VOLTAGE SENSING:  170 – 270 / 380 – 415 / 440 – 480 V (Three or Single Phase Sensing)

-OUTPUT VOLTAGE (DC):  80V  (max, continuous)

-OUTPUT CURRENT (DC):  8A  (max, continuous)

-OUTPUT CURRENT (DC):  15 A  (max 1 minute forcing)

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