Reference: MEC 20
AVR AUTOMATIC VOLTAGE REGULATOR FOR GENERATOR MARELLI M31FA600A "MEC 20" GENERATOR FOR POWERS FROM 315 TO 800kVA AND RELATED GENERATING SETS IN PARALLEL
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Voltage Regulator for Three-Phase Synchronous Generators " M31FA600A - MEC 20"
Item description:
The M31FA600A MEC-20 voltage regulator is suitable for MARELLI MOTORI synchronous generators from the MJB series for sizes from 315 to 800kVA.
The M31FA600A voltage regulator is a microprocessor device with a pulse width modulation (PWM) output stage and can be adjusted via its potentiometers. The electronic card is resin-coated to maintain a high degree of operational reliability even in difficult environmental conditions (high humidity, dust, saline environment) and in the presence of strong vibrations.
Electrical characteristics
• Supply voltage: 170 ÷ 277V.a.c. @ 50÷400Hz
• Power source: Auxiliary windings, mains, PMG
• Voltage accumulation: 8V.a.c.
• Type of voltage detection: single-phase / three-phase
• Voltage detection range: 220 ÷ 480V.a.c.
• Type of current sensing: single phase
• Current detection range: 1A
• Maximum continuous field current: 0÷7A in d.c.
• Maximum current of the forcing field: 0÷15A in d.c.
• Maximum field voltage: 200V.d.c.
• Field resistance: 3 Ohm÷ 20 Ohm
• Adjustment accuracy from empty to full load: ±0.5%
• Accuracy with motor regulation ±4% : ±1%
• Thermal drift: ±0.5%
• Response time: 1 cycle
• Operating temperature: -30°C ÷ +70°C
• Storage temperature: -40°C ÷ +80°C
Characteristics:
• Interface: potentiometers, dip-switches
• Live remote control: Prepared
• Radio interference suppressor: internal
• Over-boost: Predisposition for Varicomp
• Operation in parallel with the network: Prepared
• Parallel operation with similar generators: standard
Functions:
• Drop compensation
• Soft start
• Protections
• Underfrequency limiter
• Overexcitation limiter
• Replaceable internal fuse
Check
• External potentiometer: 100 kOhm-1 W
• External DC voltage signal (±5 V)
Dimensions and weight: 180*170*41mm - weight: 760gr.
Package Included:
Voltage regulator 1.00 Pcs. and user and installation manual.
N.B. : We specify that this product is a high quality universal spare part, it does not mean that it can be ADDITIONAL on Generators that do not have AVR.
Data sheet
AVR AUTOMATIC VOLTAGE REGULATOR FOR GENERATOR MARELLI M31FA600A "MEC 20" GENERATOR FOR POWERS FROM 315 TO 800kVA AND RELATED GENERATING SETS IN PARALLEL
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