Ingersoll-Rand G 270, Руководство пользователя и инструкция по обслуживанию

Страница: 208 / 214

22
INSTALLATION AND MAINTENANCE
LSA 46.2 / 47.1
ALTERNATORS
SERVICING - MAINTENANCE
Ref. 2981 GB - 4.33/a - 04.00
LEROY-SOMER
4.8 - Table of characteristics
Table of average values
Alternator - 4 poles - 50 Hz - Standard winding No. 6.
(400V for the excitation values)
The voltage and current values are given for no-load
operation and operation at rated load with separate field
excitation. All values are given at ± 10% and may be changed
without prior notification (for exact values, consult the test
report).
4.8.1 - Average values for LSA 46.2
Resistances at 20°C (
Ω
)
Resistance of AREP auxiliary windings at 20°C (
Ω
)
Field excitation current i exc (A)
Symbols : “i exc”: excitation current of the exciter field.
For 60 Hz machines, the “i exc” values are approximately 5 to
10 % lower.
4.8.2 - Average values for LSA 47.1
Resistances at 20°C (
Ω
)
Resistance of AREP auxiliary windings at 20°C (
Ω
)
Field excitation current i exc (A)
Symbols : “i exc”: excitation current of the exciter field.
For 60 Hz machines, the “i exc” values are approximately 5
to 10 % lower.
4.8.3 - Voltage of auxiliary windings at no load
LSA 46.2 Stator L/N Rotor Field Armature
M3 0.022 0.23 8.8 0.035
M5 0.0182 0.24 8.8 0.035
L6 0.0148 0.264 8.8 0.035
L9 0.012 0.295 8.8 0.035
VL12 0.0085 0.343 10 0.037
LSA 46.2 Auxil wdg : X1, X2 Auxil wdg : Z1, Z2
M3 0.24 0.4
M5 0.215 0.36
L6 0.185 0.36
L9 0.19 0.32
VL12 0.17 0.32
LSA 46.2 No load At rated load
M3 1.1 4
M5 1.1 3.8
L6 1.1 4.1
L9 1.2 4
VL12 1.1 3.5
LSA 47.1 Stator L/N Rotor Field Armature
M4 0.0108 0.8 10.2 0.13
M6 0.0081 0.9 10.2 0.13
L9 0.006 1.04 10.2 0.13
L10 0.0053 1.1 10.2 0.13
L11 0.0053 1.1 10.2 0.13
VL 12 0.0028 1.13 10.2 0.13
LSA 47.1 Auxil wdg : X1, X2 Auxil wdg : Z1, Z2
M4 0.23 0.405
M6 0.21 0.335
L9 0.175 0.34
L10 0.173 0.29
L11 0.173 0.29
VL 12 0.18 0.325
LSA 47.1 No load At rated load
M4 0.9 3.8
M6 0.9 3.5
L9 0.9 3.2
L10 0.9 3.4
L11 0.9 3.7
VL 12 0.9 3.45
LSA 46.2 Auxil wdg : X1, X2 Auxil wdg : Z1, Z2
50 Hz 70 V 10 V
60 Hz 85 V 12 V
LSA 47.1 Auxil wdg : X1, X2 Auxil wdg : Z1, Z2
50 Hz 70 V 5 V
60 Hz 85 V 6 V