Single-Phase Duty Of Three-Phase Alternators; General Note - Linz electric SL Serie Mode D'emploi Et D'entretien

Final controls
After completing all coupling operations, it is necessary
to check that the axial positioning is correct; there must
be a 3mm axial play in its housing.
Fig. 9
Do not lift the genset (prime mover engine + alterna-
tor) from the alternator hoist ring; this one should be
used only and exclusively to lift the alternator.
The load cables connection should be carried out by
qualified personnel when the machine is at a complete
standstill and disconnected from the load.
Output Voltage and frequency
These alternators are designed to exclusively supply the voltage and
frequency specified on the rating plate.
Torques
Fig. 10
Tightening torque terminal board
Ø f P
M8
M8
M10
M12
M12
M12
M12
Tightening torque coupling disc on shaft
Ø f M
M10
M10
M12
M16
M16
M20
Tightening torque coupling disc/adapter
Ø f D - Ø f F
Tightening torque N.D.E. braket
Ø f S
Tie rod M10
Tie rod M10
Tie rod M12
Screw M12
Screw M12
5. SINGLE-PHASE DUTY OF THREE-PHASE ALTERNATORS (SLT-PRO)
The continuous duty, single-phase output power is
approximately 65% of the three-phase rated output
power when using phase-to-phase voltage (DELTA
CONNECTION) and 40% when using phase voltage (STAR
CONNECTION).
- 23 -
6. GENERAL NOTES
Operation in particular settings
If the alternator is going to be used as part of a soundproof generating set, make
sure that only fresh air circulate in the alternator.
Tightening This can be ensured by placing the alternator's air inlet near the external
Type torque
air intake.
Nm
Furthermore, it is important to remember that the quantity of air required is:
SLS18-SLT18 11±10%
PRO18 11±10%
SL-PRO 18
PRO40 20±10%
PRO22 36±10%
PRO 22
PRO28 «S-M» 36±10%
PRO 28
PRO28 «L» 40±10%
PRO35-PRO40 40±10%
PRO 35
Tightening
PRO 40
Type torque
Bearings
Nm
The bearings are sealed for life therefore they do not require maintenance
SLS18-SLT18 50±10%
PRO18 50±10%
for more than 30,000 hours.
PRO22 80±10%
When you carry out a general overhaul of the genset, it is recommended
PRO28 200±10%
PRO35 200±10% to wash the bearings with a suitable solvent, remove and replace the
PRO40 400±10%
grease inside.
You can use: Agip Gr MW3 - Shell Alvania 3 - MOBIL OIL MOBILUX GREASE
Tightening torque
Nm
3 or other equivalent grease.
M8 25±10%
Type of bearings
M10 50±10%
M12 80±10%
ALTERNATOR
M16 200±10%
SL
Tightening
PRO 18 'S-M'
Type torque
Nm
PRO 18 'L'
SLS18-SLT18 50±10%
PRO 22
PRO18 50±10%
PRO22 80±10%
PRO 28
PRO28 80±10%
PRO35-PRO40 80±10%
PRO 35
PRO 40
Diode bridge
The following diodes are normally used:
SL - PRO 18 25A - 1200V
PRO 22 35A - 1200V
PRO 28 50A - 1200V
PRO 35 50A - 1200V
PRO 40 50A - 1200V
Diode bridge inspection
The inspection of each diode in a rectifier bridge can be carried out using
either an ohmmeter or a battery with a light bulb, as described below.
12÷14 m /min.
3
22÷26 m /min.
3
45÷50 m /min.
3
55÷64 m 3 /min.
105÷120 m /min.
3
D.E N.D.E.
- 6306-2RS-C3
6309-2RS-C3 6307-2RS-C3
6310-2RS-C3 6307-2RS-C3
6314-2RS-C3 6309-2RS-C3
6316-2RS-C3 6314-2RS-C3
6319-2RS-C3 6316-2RS-C3
6324-C3 6318-2RS-C3