AVR MEC-20 M31FA600A

Main Data

Generator frame size

Standard
315÷450
On request
160÷250

AVR supply

Auxiliary winding*,
mains,
PMG

Voltage sensing

Three phase

Voltage remote control

Arrangement

Radio interference supressor

Internal

MEC 20

11000317

Over-exitation device

Arrangement for varicomp

Parallel operation with the mains

Arrangement for device

Parallel operation with similar generators

Arrangement

Standard protections

Over-excitation

Limiters

Under-frequency

Function

Auxiliary inputs

Electrical characteristics

Power supply voltage

170 ÷ 277 Vac @ 50 ÷ 400 Hz

Power supply source

Auxiliary windings, mains, PMG

Voltage build-up

5 Vac

Voltage sensing type

1-phase / 3-phase

Voltage sensing range

220 ÷ 480 Vac

Current sensing type

1-phase

Current sensing range

1 A

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 %

Steady state accuracy

±0.1 %

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

Function

Droop compensation
Soft start

Protection

Under-frequency limiter
Over-excitation limiter
Internal fuse, replaceable

Control

External potentiometer, 10 kΩ - 1 W
External DC voltage signal (-5/+5 V)

Dimensions and weight

L

180mm

B

170mm

K

160mm

J

150mm

H

41mm

D

6.5mm

Weight

760g