Product Card

Alternator Specifications
Brand Mecc Alte
Model ECO38-1LN/4
Voltage V 400
Frequency Hz 50
Power factor cos ϕ 0.8
Type Brushless
Poles 4
Voltage regulation system Electronic
Standard AVR DSR
Voltage tolerance % 1
Efficiency @ 75% load % 93.7
Class H
IP protection 23
Mechanical structure
Robust mechanical structure which permits easy access to the connections and
components during routine maintenance check-ups.
Voltage regulator
Voltage regulation with DSR. The digital DSR controls the range of voltage, avoiding
any possible trouble that can be made by unskilled personnel. The voltage accuracy is
±1% in static condition with any power factor and with speed variation between 5%
and +30% with reference to the rated speed.
Windings / Excitation system
Generator stator is wound to 2/3 pitch. This eliminates triplen (3rd, 9th, 15th …)
harmonics on the voltage waveform and is found to be the optimum design for trouble-
free supply of non-linear loads. The 2/3 pitch design avoids excessive neutral currents
sometimes seen with higher winding pitches. MAUX (Standard): The MAUX MeccAlte
Auxiliary Winding is a separate winding within the main stators that feeds the
regulator. This winding enables to take an overload of 300% forced current (short
circuit maintenance) for 20 seconds. This is ideal for motor starting requirements.
Insulation / Impregnation
Insulation is of class H standard. Impregnation is made with premium tropicalised
epoxy resins by dipping and dripping. High voltage parts are impregnated by vacuum,
so the insulation level is always very good. In the high-power models, the stator
windings undergo a second insulation process. Grey protection is applied on the main
and exciter stator to give enhanced protection.
Reference standards
Alternator manufactured according to , and complies with , the most common
specification such as CEI 2-3, IEC 34-1, EN 60034-1, VDE 0530, BS 4999-5000, CAN/
CSA-C22.2 No14-95-No100-95.