MEC-20

ModelMEC-20
Frame size315 ÷ 450
TechnologyDIGITAL
RegulatorMEC-20
Part numberM31FA600A
ComplianceCE
  • Main Data
  • Electrical characteristics
  • Features
  • Dimensions and weight

Main Data

Generator frame sizeStandard
315÷450
On request
160÷250
AVR supplyAuxiliary winding*,
mains,
PMG
Voltage sensingThree phase
Voltage remote controlArrangement
Radio interference supressorInternal
MEC 20M31FA600A
Over-exitation deviceArrangement for varicomp
Parallel operation with the mainsArrangement for device
Parallel operation with similar generatorsArrangement
Standard protectionsOver-excitation
LimitersUnder-frequency
FunctionAuxiliary inputs

Electrical characteristics

Power supply voltage170 ÷ 277 Vac @ 50 ÷ 400 Hz
Power supply sourceAuxiliary windings, mains, PMG
Voltage build-up5 Vac
Voltage sensing type1-phase / 3-phase
Voltage sensing range220 ÷ 480 Vac
Current sensing type1-phase
Current sensing range1 A
Maximum continuative field current0 ÷ 7 Adc
Maximum forcing field current0 ÷ 15 Adc
Maximum field voltage200 Vdc
Field resistance3 Ω ÷ 20 Ω
Regulation accuracy from no load to full load±0.5 %
Steady state accuracy±0.1 %
Accuracy with ±4% engine governing±1 %
Thermal Drift±0.5 %
Response time1 cycle
Operating temperature-30°C ÷ +70°C
Storage temperature-40°C ÷ +80°C

Features

InterfacePotentiometers, dip-switches
FunctionDroop compensation
Soft start
ProtectionUnder-frequency limiter
Over-excitation limiter
Internal fuse, replaceable
ControlExternal potentiometer, 10 kΩ - 1 W
External DC voltage signal (-5/+5 V)

Dimensions and weight

L180mm
B170mm
K160mm
J150mm
H41mm
D6.5mm
Weight760g
Drawing

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