Pramac-GSW415V-Product-Card

Alternator Specifications
Alternator Mecc Alte
Model ECO40-1S
Voltage V 400
Frequency Hz 50
Power factor cos ϕ 0.8
Poles 4
Type Brushless
Standard AVR DER1-A
Voltage tolerance % 1
Efficiency @ 75% load % 93.8
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 DER 1. The digital DER 1 is a Digital controlled regulator,
based on DSP (Digital Signal Processor) that combines function as Voltage Regulation
and Alternator Protections and Diagnostic into a very small single board.
Voltage supply: 40Vac÷270Vac
Maximum continuous output current: 4Adc
Frequency range: 12Hz÷72Hz
Single phase sensing automatic recognition
Average value of voltage regulation
Voltage regulation range (sensing) from 75Vac to 300Vac
Precision of voltage regulation: ± 1% from no-load to nominal load in static condition,
with any power factor and for frequency variations ranging from -5% to +20% of the
nominal value.
Precision of voltage regulation: ± 0,5% in stabilized conditions (load, temperature).
Transient voltage drop and overvoltage within ± 15%
Voltage recovery time within ± 3% of the value set, in less than 300 msec.
Underspeed protection with adjustable threshold and slope
Overvoltage and undervoltage alarms
Excitation overcurrent protection with delayed intervention
Alarm conditions storage (type of alarm, number of events, duration of the last event,
total time)
Memorization of the regulator operation time
Windings / Excitation system
Generator stator is wound to 2/3 pitch. This eliminates triple (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.
PMAUX (optional): Alternator can be equipped with the optional PMAUX (Permanent
Magnet Generator) which matches the performance and is capable of supporting both
linear and distorted loads.
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