HT INDUSTRIAL AUTOMATION LIMITED

 Replace Marelli AVR Automatic Voltage Regulator MEC-20 M31FA600A

We have Replacement model for Marelli M31FA600A AVR in our regular stock!

The Brands mentioned here are for reference purpose only, our parts can exactly replace the original ones.

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

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