The air-cooled alternator takes air in through filters;
leads the air through the alternator by means of a
built-in ventilator and out of the alternator again.
The water-cooled alternator circulates air internally
in the alternator by means of the ventilator. The air-
flow passes through a built-in water cooler, remov-
ing the heat from the alternator through the connec-
ted cooling water system.
The entrance to the electrical main cables can be
placed on the right or left side of the alternator with
a horizontal or vertical inlet.
Electrical alternator design
The alternator is a three-phase AC synchronous
alternator – brushless with built-in exciter and auto-
matic, electronic voltage regulator (AVR) with poten-
tiometer for remote control. (The potentiometer for
final adjustment of the voltage is included in the
standard delivery and normally part of the control
panel).
The alternator is intended for parallel running.
The insulation class for the windings can be H/H or
lower. H/H corresponds to 180° C on the windings
and 180° C operating temperature.
According to the GL classification rules the alterna-
tor must as maximum be used up to 155° C oper-
ating temperature – corresponding to insulation
class F. It may also be a customer requirement to
keep the efficiency below class H.
The windings have tropical resistance against high
humidity.
The alternator is equipped with anti-condensate
standstill heater.
For temperature surveillance in the windings, the
alternator is equipped with 2x3 PT100 sensors
(PT1000 sensors for engines with SaCoSone).
PT100/PT1000 sensors are also installed for sur-
veillance of the bearing temperature and for water
cooled alternators for surveillance of cooling air
temperature. Alternators may also be equipped with
visual thermometers on bearings.
The alternator can be delivered for the voltages 380
VAC to 13.8 KVAC. The frequencies are 50 Hz or
60 Hz.
The alternator fulfils the requirements for electro-
magnetic compatibility protection EMC, is designed
and tested according to IEC34 and fulfils the DIN
EN 60034 / VDE0530 requirements.
MAN Diesel & Turbo
B 50 00 0
Alternators for GenSets
1699895-2.1
Page 2 (2)
L27/38S, L21/31S, L16/24S, L16/24, L21/31, L27/38
2015.11.27
Summary of Contents for L23/30DF
Page 1: ...L27 38S Project Guide Power Plant Four stroke GenSet...
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Page 9: ...MAN Diesel Turbo I 00 Introduction Page 1 1 I 00 Introduction 2018 04 13 en...
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Page 31: ...MAN Diesel Turbo D 10 General information Page 1 1 D 10 General information 2018 04 13 en...
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Page 59: ...MAN Diesel Turbo B 10 Basic diesel engine Page 1 1 B 10 Basic diesel engine 2018 04 13 en...
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Page 85: ...MAN Diesel Turbo B 11 Fuel oil system Page 1 1 B 11 Fuel oil system 2018 04 13 en...
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Page 173: ...MAN Diesel Turbo B 13 Cooling water system Page 1 1 B 13 Cooling water system 2018 04 13 en...
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Page 207: ...MAN Diesel Turbo B 14 Compressed air system Page 1 1 B 14 Compressed air system 2018 04 13 en...
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Page 217: ...MAN Diesel Turbo B 15 Combustion air system Page 1 1 B 15 Combustion air system 2018 04 13 en...
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Page 227: ...MAN Diesel Turbo B 16 Exhaust gas system Page 1 1 B 16 Exhaust gas system 2018 04 13 en...
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Page 269: ...MAN Diesel Turbo B 17 Speed control system Page 1 1 B 17 Speed control system 2018 04 13 en...
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Page 293: ...ENGINE AUTOMATION MAN Diesel Turbo SE SaCoSone GENSET System description Revision 1 5...
Page 306: ...MAN Diesel Turbo SaCoSone GENSET SaCoSone GENSET Communication from GenSet Revision 1 7...
Page 309: ...MAN Diesel Turbo Table of Contents...
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Page 327: ...MAN Diesel Turbo B 20 Foundation Page 1 1 B 20 Foundation 2018 04 13 en...
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Page 335: ...MAN Diesel Turbo B 21 Test running Page 1 1 B 21 Test running 2018 04 13 en...
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Page 341: ...MAN Diesel Turbo E 23 Spare parts Page 1 1 E 23 Spare parts 2018 04 13 en...
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Page 351: ...MAN Diesel Turbo P 24 Tools Page 1 1 P 24 Tools 2018 04 13 en...
Page 379: ...MAN Diesel Turbo B 50 Alternator Page 1 1 B 50 Alternator 2018 04 13 en...
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