Technical Specifications - MarelliMotori M40FA640A/A Mark I User Manual

4. TECHNICAL SPECIFICATIONS

The M40FA640A/A voltage regulator can be calibrated using potentiometers. The circuit board is resin-bonded in order to
maintain a high degree of operational reliability even in difficult environmental conditions (high levels of humidity, dust, a salty
atmosphere) and in the presence of vibrations.
4.1. Specifications
Power supply voltage (auxiliary windings, main terminals)
±10% of range tolerance, 50/60Hz
Voltage build-up
Voltage sensing (single-phase)
±10% of range tolerance, 50/60Hz
Current sensing
Maximum continuative field current
Maximum forcing field current (1 minute)
Maximum field voltage
Field resistance
Regulation accuracy from no load to full load
From 0 to 100% of the rated load - PF 0.8 - balanced and non deforming load, constant frequency
Steady state accuracy
@ frequenza e carico costanti
Accuracy with ±4% engine governing
@ steady state conditions for load and speed
Thermal Drift
% voltage change for 50°C change from T
Response time
Operating temperature
Storage temperature
4.2. Functions
Protection
Control
Parallel
4.3. Dimensions
L
B
K
J
H
D
Weight
963857132_I
, after 10 minutes
amb
Under-frequency limiter
Over-excitation limiter
Internal fuse, replaceable
With external potentiometer, 100 kΩ for ∆V = ±5 % of the rated voltage
With external DC voltage signal (-3/+3 V)
Suitable for connection to power factor regulator PFR M50FA400A
Reactive droop compensation, ±20 %
180mm
170mm
160mm
150mm
41mm
6.5mm
670g
L
J
K
170 ÷ 277 Vac
5 Vac
170 ÷ 480 Vac
0 ÷ 1 Aac
0 ÷ 8 Adc
0 ÷ 15 Adc
100 Vdc
3  ÷ 20 
±0.5 %
±0.1 %
±0.5 %
1 ciclo
-30°C ÷ +70°C
-40°C ÷ +80°C
H
B
±1 %
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