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Idiomas disponibles
Idiomas disponibles
Special attention must be paid not to cause any stretching that may affect the natural alignment of the two machines.
6) Make sure that the alternator/welder's non-driving end bearing has the recommended expansion allowance (min. 2 mm.)
and that it is preloaded by a preload spring.
B3/B9 CONSTRUCTION FORM
This type of mounting arrangement allows direct coupling of alternator and drive engine. Please follow the instructions below
when assembling:
1) Secure the cover "C" to the first mover as shown in Figure 2A.
2) Secure the alternator to its cover with the 4 bolts provided as shown in Figure 2B.
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 2C.
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 2D.
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.
In the case where there is a threaded reduction sleeve, it must be screwed onto the engine shaft first and then proceed as
shown in sections 1-2-3-4.
B2 CONSTRUCTION FORM
Also this construction form allows direct coupling of alternator/welder and drive motor. Please follow the instructions below
when assembling:
1) Check that the rotor is correctly positioned as illustrated in Figure 3A.
2) Remove rotor's locking components on the non-drive end side.
3) Place the alternator-welder next to the drive motor, as illustrated in Figure 3B.
4) Centre and secure the stator to the drive motor's flange using suitable screws, as shown in Figure 3C.
5) Centre and secure, using appropriate screws, the coupling to the drive motor's flywheel working through the air outlet, as
indicated in Figure 3D.
Turn the rotor as shown in Figures 4A and 4B.
FINAL CHECKS
After the above mentioned coupling procedures check that the rotor's axial position is correct and verify that
expansion allowance between the non-drive end bearing and the axial locking wall is 3 mm.
4. WIRING DIAGRAMS (FIG. 11/A - 11/B - 11/C)
TYPE
RESISTANCE Ω (20°C)
Generator Welder
Main
Stator
Stator
Rotor
E1W13S/2 300DC
1.0
0.025
10.4
E1W13S/4 200DC
1.7
0.050
8.4
E1W13M/4 250DC
0.95
0.025
9.5
E1W13M/4 300DC
1.2
0.028
11.2
Winding protection against alternator-welder overloads:
Excitatory data generator
Exciter
Unloading
Load
Stator
Rotor
V Vcc
L Acc
V Vcc
16.5
1.35
11.5
0.70
20
16.5
2.40
12.4
0.75
26.4
16.5
2.40
14.8
0.90
28
16.5
2.40
14.8
0.90
28
The electronic regulator acts also as a protection against overloads on windings in case of: functioning at a frequency lower
than the nominal one, overload or loads with low power factor. A first protection checks the frequency of the output voltage
and de-energise the alternator when it is lower than 10% of nominal value. A second protection checks the real machine's
excitation intervening when the limit parameters of alternator-welder are exceeded.
Description of electronic regulator trimmer (SG-132) Fig. 10:
Every trimmer of the electronic regulator is properly set and it should not be modified. If it is necessary to modify a setting, this
operation must be effected by qualified personnel after having contacted the Assistance Dept. of our company. We list here
below the functions of each trimmer:
VG: To modify the output voltage when used as alternator. Voltage increases with a clockwise rotation.
OL: Calibration of overload limit. A counter-clockwise rotation to disconnect this function.
HZ: Calibration of low speed limit. A clockwise rotation to disconnect this function.
ST: Output voltage stability. It increases with a counter-clockwise rotation.
VS: To modify the output voltage of welding arc striking voltage. It increases with a clockwise rotation.
MX: To modify the maximum welding current. It increases with a counter-clockwise rotation.
MN: To modify the minimum welding current. It increases with a clockwise rotation.
5. VOLTAGE AND FREQUENCY OUTPUT OF THREE PHASE ALTERNATORS
These welders/alternators are designed to supply tension and frequency as indicated on the label. To correct the voltage it
is necessary to use the VG potentiometer of the electronic regulator. Standard voltages at 50 Hz are: 400 Volt on three phase
socket and 230 Volt on single phase one. All standard voltages at 60 Hz and other special voltages are available on request.
6. ROTATING SPEED CALIBRATION AND GENERAL MAINTENANCE
Calibration operations must be carried out by qualified personnel only.
Light deviations during the arc striking when used as welder can depend on the fact that the revolving speed is different from
the rated one. Considering that the output voltage can vary almost proportionally to the speed variation.
Operation in particular settings
If the alternator/welder is going to be used within a soundproof generating set, make sure that only fresh air enters in it. This
can be ensured by placing the alternator's air inlet near the external air intake. Moreover, consider that the quantity of air
required is: 10 m
/min.
3
Bearings
The bearings of the alternators/welders E1W13 DC are self lubricated and therefore they do not require maintenances for a
period over 30000 hours. When it is necessary to proceed to the general overhaul of the generating set it is advisable to wash
the bearings with a proper solvent, to remove and replace the grease reserve.
It is possible to use: AGIP GR MW3 - SHELL ALVANIA 3 - MOBIL OIL MOBILUX GREASE 3 or other equivalent grease.
Type of bearings:
L Acc
DRIVE END SIDE: 6208-2Z-C3
NON-DRIVE END SIDE: 6305-DDU-C3
1.2
Checkout of three-phase diode bridge (Fig. 9).
1.6
The check out of each diode valves of the rectifier bridge can be executed either with an ohmmeter or with a
1.7
battery and relative lamp as described here below. A diode valve works regularly when:
1.7
- the resistance, calculate with an ohmmeter, is very low in one sense and very high in the other
- with battery and lamp, it is verified that the ignition of the lamp is possible only with one of the two possible connections,
as illustrated in figure 5: (A = lamp off - B = lamp on).w:
- 13 -
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