Linz electric SP - E1C Mode D'emploi Et D'entretien page 9

PRECAUTIONS
Before operating the generating set read the «Operating and Maintenance Manual» both of the generating set and of the
alternator, and follow the recommendations below:
⇒ A safe and efficient 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.
⇒ Do not remove the terminal box lid or the safety screens before the alternator has come to a complete stop and before
switching off the genset.
⇒ Only competent and qualified personnel should carry out the maintenance of the generating set.
⇒ Do not wear loose garments when working near the generating set.
All persons operating, handling or servicing the genset must always wear protective gloves and safety footwear. In the
event that the alternator, or the whole generating set needs to be lifted from ground, the operators must also wear a
safety helmet.
Safety warnings. Notice panels 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 injury.
WARNING! refers to dangerous or risky operations that may cause serious personal injury or even death.
DANGER!: refers to an immediate risk that may cause serious personal injury or death.
The final installer of the generating set must make sure that all necessary safety arrangements are put in place
in order to make the whole plant compliant with current local safety regulations (earthing, contact protection,
explosion and fire safety measures, emergency stop, etc....)
ALTERNATOR DESCRIPTION
The SP - E1C/2 - E1C/4 is a series of two-pole, four-pole, single-phase brushless alternators, equipped with an auxiliary winding
(loaded on a capacitor) which ensures voltage regulation.
They are produced in compliance with EN 60204-1, EN61000-6-2, EN61000-6-4, EN 55014-1, EN 55011 specifications, as
well as with the directives No. 2006/95/CE, 2004/108/CE.
Ventilation: Axial with air inlet from non-drive end side
Enclosure protection: Standard IP 21 (IP 23 on demand).
Direction of rotation: Both directions are allowed.
Electrical features: Insulation components are made of class H materials, both for the stator and for the 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 P.F. = 1.
Overloads: 10% overload, lasting 1 hour, and occurring every 6 hours, is acceptable.
Mechanical features:
Frame, front cover and rear shield are made of a special aluminium alloy to better withstand vibrations
The shaft is made of high-tensile steel.
The rotor is particularly sturdy to withstand the drive engine escape velocity.
It is equipped with a damping cage which allows satisfactory operation even with single-phase, distorted loads. Bearings are
sealed for life.
Operation in particular settings: Should the alternator operate at more than 1,000 m above sea-level, a 4% derating every
500 m increase will need to be applied. Should the ambient temperature exceed 40°C a 4% derating every 5°C increase will
need to be applied.
INSTALLATION AND START UP
The following start up and control operations should be carried out by qualified personnel only.
⇒ The alternator must be installed in a well ventilated room. Room temperature should not exceed standard recommended
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 are properly clamped
and that the rotation of the rotor in not blocked in any way.
If the alternator has not been used for a long time, before starting it up it is recommended to test the windings insulation
resistance to earth, keeping into account that every single part has to be isolated from the others.
This particular checkup must be carried out using a "Megger" instrument at 500 Vdc.
Normally, windings having resistance to earth ≥ 1 MΩ are considered sufficiently insulated. If windings resistance is
lower than 1 MΩ , insulation will have to be restored by drying the winding (using, for example, an oven at 60° - 80°C
temperature, or having a correct amount of current obtained from an auxiliary source circulate through the wiring
It is also necessary to verify that the alternator's metallic parts, and the genset mass are bonded to site earth and that
the earth circuit satisfies any applicable legal requirements.
Mistakes or oversights concerning earthing may have fatal effects.
ASSEMBLING INSTRUCTIONS
Assembling should be carried out by qualified personnel after reading the manual.
B9 MOUNTING ARRANGEMENT (ALTERNATORS SP-E1C SERIES)
This type of mounting arrangement allows direct coupling between the first engine and the alternator. We recommend that
you proceed with the assembly as follows:
1) Secure the cover "C" to the engine as shown in Figure 1A.
2) Secure the alternator to its cover with the 4 bolts provided as shown in Figure 1B.
3) Apply the tie rod "13" for the axial securing of the rotor, inserting the washer "50", screwing the self-locking nut "51" and
pulling out the tie rod about 2mm, as shown in Figure 1C.
4) Axially lock the rotor by tightening the tie rod with a torque wrench (tightening torque OF 21 Nm for M8 tie rods, 48 Nm
for M10 and 120 Nm for M14 tie rods) as shown in Figure 1D.
Check that the self-locking nut "51" has a threaded portion of the tie rod that enters the rotor thus
allowing a secure locking.
Before assembly, check that the coupling conical seats (on the alternator and engine) are regular and clean. If
there is a threaded reduction sleeve, it must be screwed onto the engine shaft and then proceed as shown in
sections 1-2-3-4.
B3/B14 MOUNTING ARRANGEMENT (ALTERNATOR TYPE E1C)
The B3/B14 mounting arrangement requires the use of a flexible coupling between the drive engine and the alternator.
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