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1. SAFETY PRECAUTIONS
Beforeusingthegeneratingset itisnecessarytoreadthe«Useand MaintenanceManual»forthegenerating
set and the alternator and to follow the recommendations below:
⇒A safe and ecient working can be achieved only if the machines are used correctly, in compliance
with the instructions provided by the relevant operational and maintenance handbooks and safety
regulations.
⇒An electric shock can cause serious personal injuries and even death.
⇒Donotremove theterminalboardcover andthealternator’s protection grid before thealternatorhas
come to a complete stop, and before deactivating the starting system of the generating set.
⇒Only competent and qualied personnel should carry out the maintenance of the generating set.
⇒Do not wear loose garments when working near the generating set.
⇒Allpersonsoperating,handlingor servicing thegensetmustalwayswearprotectiveglovesandsafety
footwear.In theeventthatthealternator,orthe wholegeneratingsetneedstobeliftedfromground,
the operators must also wear a safety helmet.
Safety notices used in this manual have the following meaning:
IMPORTANT! refers to dangerous or risky operations that may cause damage to the product.
CAUTION! refers to dangerous or risky operations that may damage the product or cause personal in-
jury.
WARNING!referstodangerousorriskyoperationsthatmaycauseseriouspersonalinjuryorevendeath.
DANGER! refers to an immediate risk that may cause serious personal injury or death.
Thepersonresponsiblefor theinstallationof thegenerating setmustmakesurethatallthenecessary
safety arrangements areinplacein order tomakethewholeplantcompliant withcurrentlocalsafety
regulations(earthen,contactprotection,explosion andresafetymeasures,emergencystop,etc.…)
2. ALTERNATOR DESCRIPTION
The E1X series includes three-phase 2 and 4 poles brushless alternators with exciter. They can be equipped with automatic
voltage regulator (E1X), or compound and electronic mixed regulation (E1X KE).
They are manufactured in compliance with EN 60034-1, EN 60204-1, EN61000-6-2, EN61000-6-4, EN 55014-1, EN
55011 specications, as well as with the directives no. 2006/42/CE, 2014/35/UE, 2014/30/UE.
Ventilation: Axial with air inlet from non-drive end side.
Protection: Standard IP 21. IP 23 on request.
Direction of rotation: Both directions are allowed.
Electrical features: Insulation components are made with class H material, for both stator and rotor. Windings are
tropicalized.
Power values: They refer to the following conditions: ambient temperature up to 40°C, altitude up to 1000 m. above
sea-level, continuous duty at cosφ= 0.8.
OVERLOADS: A 10% overload for one every six hours is normally accepted.
Mechanical features: Casing and covers are made of aluminium alloy which holds out against vibrations. The shaft is made
of high-tensile steel.
ENGLISH The rotor is particularly sturdy to hold out against the runaway speed of the drive motors.
It is equipped with a damping cage which allows satisfactory operation even with single-phase, distorted loads. Bearings
have lifelong lubrication.
Operation in particular settings:
If the alternator is going to be used at more than 1000 m above sea-level, a 4% derating per each 500 m increase will need to be
operated. If ambient temperature exceeds 40°C a 4% derating per each 5°C increase will need to be operated.
INSTALLATION AND START UP
The following start up and control operations should be carried ou only by qualied personnel.
⇒The alternator must be installed in a well ventilated room. Ambient temperature should not exceed standard recom-
mended values.
⇒Particular attention must be paid to ensure that air inlets and outlets are never obstructed.
⇒While installing the alternator it is important to avoid direct suction of warm air coming from the alternator’s outlet
and/or from the prime motor.
⇒Before starting up the alternator it is advisable to check (visually and manually) that all terminals in every terminal
board are properly clamped and that the rotation of the rotor in not blocked in any way. If the alternator has not been
usedfora longtime,beforestartingitupit isrecommendedtotestthewindingsinsulationresistanceto earth,keeping
into account that every single part has to be insolated from the others.
Incaseofelectronicor mixedregulation,disconnecttheelectronic voltageregulatorof thealternatorbefore
totestthe insulationresistanceto earth of thewindingswitha megger orotherhighvoltage instruments;
high tensions of the test instruments can damage the internal components of the electronic regulator.
⇒Normally, windings having resistance to earth ≥1 MΩ - 500V are considered suciently insulated. If windings resist-
ance is lower, insulation will have to be restored by drying the winding (using, for example, an oven at 60°-80°C
temperature, or by making circulate through the wiring, a proper value of current obtained from an auxiliary source).
It is also necessary to verify that the alternator/welder’s metallic parts, and the mass of the entire set are connected
to the earth circuit and that the latter satises any applicable legal requirements.
Mistakes or oversights concerning earthing may have fatal eects.
3. ASSEMBLING INSTRUCTIONS
Assembling should be carried out by qualied personnel after reading the manual.
B3/B14 CONSTRUCTION FORM
The B3/B14 construction form requires the use of a exible coupling between the drive motor and the alternator.
The exible coupling should not originate any axial or radial forces during operation, and will have to be mounted rigidly on the
alternator shaft end. Please follow the instructions below while assembling:
1) Apply the flexible coupling and the adaptor on the alternator as shown in Figure 1. Whenpositioningtheexible
coupling, remember that once coupling is over the rotor has to expand itself axially towards the coupling located on the
non-driving end. To make this possible it is necessary that after assembling the shaft end is positioned according to the
cover pattern, as illustrated in Figure 2.
2) Place the relevant exible coupling on the revolving part of the diesel engine, as shown in Figure 3.
3) Mount the coupling’s rubber blocks.
4) Couple the alternator to the drive motor by screwing, with suitable screws, the adaptor to the motor (see Fig. 4).
5) Fix, using appropriate rubber anti-vibration dampers, the motor-alternator unit to the common bed-plate.
Special attention must be paid not to cause any stretching that may aect the natural alignment of the two machines.
English
