12
INSTALLATION AND MAINTENANCE
LSA 46.2 / 47.1
ALTERNATORS
INSTALLATION
Ref. 2981 GB - 4.33/a - 04.00
LEROY-SOMER
3.4 - Commissioning
The machine can only be started up and used if the
installation has been set up in accordance with the
regulations and instructions defined in this
manual.
The machine is tested and set at the factory. When first used
with no load, make sure that the drive speed is correct and
stable (see the nameplate). With the greaseable ball bearings
option, we recommend greasing the bearings at the time of
commissioning (see 4.2.3).
On application of the load, the machine should achieve its
rated speed and voltage; however, in the event of abnormal
operation, the machine setting can be altered (follow the
adjustment procedure in section 3.5). If the machine still
operates incorrectly, the cause of the malfunction must be
located (see section 4.4).
3.5 - Settings
The various adjustments during tests must be
made by a qualified engineer.
Take care that the drive speed specified on the
nameplate is reached before commencing
adjustment
1500 min
-1
/ 50Hz or 1800 min
-1
/ 60 Hz.
Do not try to set the voltage if the frequency or
speed is not correct (risk of irreparable rotor
damage).
After operational testing, replace all access panels
or covers.
The AVR should be used to make any adjustments to the
machine.
3.5.1 - R 448 settings
a) Initial potentiometer settings (see table below)
- Remote voltage adjustment potentiometer : centre (strap
ST4 removed).
WARNING
Action
Factory setting
Pot.
P2
P3
P4
P1
P5
10 A
maximum
400V - 50 Hz
(Input
0 - 380 V)
Not set
(centre position)
If ST3 = 50 Hz
(factory) = 48 Hz
If ST3 = 60 Hz
(factory) = 58 Hz
Not set
(fully anti-
clockwise)
Excitation ceiling
Limit of excitation and
short-circuit current,
minimum fully anti-clockwise
Voltage quadrature droop
(// operation with C.T.)
- 0 quadrature droop fully
anti-clockwise.
Voltage
minimum fully anti-clockwise
Stability
Threshold/LAM or U/F
Underspeed protection
and "LAM" trip threshold
Maximum frequency fully
anti-clockwise
Содержание G 270
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Страница 214: ...MOTEURS LEROY SOMER 16015 ANGOUL ME CEDEX FRANCE Imprimerie MOTEURS LEROY SOMER RC ANGOULEME B 671 820 223...