AVR MEC-20 M31FA600A Replace Marelli Automatic Voltage Regulator

Video

Model: MEC-20
Frame size: 315 ÷ 450 (On request 160 ÷ 250)
Technology: DIGITAL
Part number: 11000317
Compliance: CE

Details

Electrical characteristics of Marelli M31FA600A AVR
·         Power supply voltage: 170 ÷ 277 Vac @ 50 ÷ 400 Hz
·         Power supply source: Auxiliary windings, mains, PMG
·         Voltage build-up: 8 Vac
·         Voltage sensing type: 1-phase / 3-phase
·         Voltage sensing range: 220 ÷ 480 Vac
·         Current sensing type: 1-phase
·         Current sensing range: 1 Aac
·         Maximum continuative field current: 0 ÷ 7 Adc
·         Maximum forcing field current: 0 ÷ 15 Adc
·         Maximum field voltage: 200 Vdc
·         Field resistance: 3 Ω ÷ 20 Ω
·         Regulation accuracy from no load to full load: ±0.5 %
·         Accuracy with ±4% engine governing: ±1 %
·         Thermal Drift: ±0.5 %
·         Response time: 1 cycle
·         Operating temperature: -30°C ÷ +70°C
·         Storage temperature: -40°C ÷ +80°C

Features
·         Interface: Potentiometers, dip-switches
·         Voltage remote control: Arrangement
·         Radio interference suppressor: Internal
·         Over-boosting: Arrangement for Varicomp
·         Parallel operation with the mains: Arrangement  for device
·         Parallel operation with similar generators: Arrangement

Functions for Marelli MEC-20 AVR
·         Droop compensation
·         Soft start
Protections
·         Under-frequency limiter
·         Over-excitation limiter
·         Internal fuse, replaceable
Control
·         External potentiometer: 100 kΩ – 1 W
·         External DC voltage signal (±5 V)
Dimensions and weight of Marelli AVR MEC-20 M31FA600A
·         L: 180 mm
·         B: 170 mm
·         K: 160 mm
·         J: 150 mm
·         H: 41 mm
·         D: 6.5 mm
·         Weight: 760 g