Linz electric E1X Serie Instrucciones Para El Uso Y Mantenimiento página 24

WINDING - RESISTANCE Ω Ω Ω Ω Ω (20 ° ° ° ° ° C)
POWER Alternator
KVA KVA
Main Auxiliary
TYPE
winding winding Rotor
50 Hz 60 Hz
8 10 1,06 0,65
E1X13S K/2 10 12,5 0,74 0,54
12,5 15 0,54 0,47
16 19,5 0,32 0,42
E1X13M K/2
22 26 0,23 0,38
6,5 8 2,36 1,00
E1X13S K/4 8 10 1,15 0,62
9 11 0,86 0,58
11 13,5 0,67 0,53
E1X13M K/4 14 17 0,49 0,51
16 19 0,45 0,48
Voltage calibration
The calibration of voltage should be carried out by qualified personnel only because of
electrocution hazard
Output voltage regulation should be carried out at nominal revolving speed (3000 rpm for 2 poles
alternators and 1500 rpm for those at 4 poles) within the nominal value +/-5%.
Exciter Compound
Stator Rotor Serie Deriv.
2 POLES - 3000 and 3600 rpm
8,56 14,10 1,28 0,063 1,92
9,42 14,10 1,28 0,037 1,92
9,79 14,10 1,28 0,021 1,92
12,00 14,10 1,28 0,015 1,92
13,70 14,10 1,28 0,007 1,92
4 POLES - 1500 and 1800 rpm
5,73 14,10 2,05 0,056 1,92
6,58 14,10 2,05 0,039 1,92
7,22 14,10 2,05 0,032 1,92
7,85 14,10 2,05 0,230 1,92
9,46 14,10 2,05 0,013 1,92
9,86 14,10 2,05 0,007 1,92
The alternators are calibrated to distribute the nominal
voltage. Light deviations of the output voltage can
Excitation data
be caused by a revolving speed which is different
no load load
from the nominal one. The output voltage changes
cosfi = 0,8
proportionally to the revolving speed. To correct the
V c.c. A c.c. V c.c. A c.c.
no-load voltage of the alternator at a specific revolving
speed, it is necessary to act on the air gap of the
compound transformer as under described (see figure
5).
1) Loose the tightening of two screw nuts N.
2,70 0,19 14,50 1,03
2) Modify the height of air gap considering that:
2,70 0,19 14,50 1,03
2,70 0,19 14,50 1,03
2,00 0,14 14,95 1,06
2,00 0,14 14,95 1,06
3) Once regulation is effected, tighten the two screw
nuts N.
6,80 0,48 21,20 1,50
Fig. 5
7,20 0,51 21,25 1,51
7,60 0,54 21,30 1,51
7,80 0,55 22,00 1,56
8,10 0,57 23,00 1,63
8,20 0,58 23,00 1,63
Frequency variation
An alternator supplied for operating at Volt 400/50
Hz can also operate at 480/60 Hz.
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a) increasing it the voltage grows;
b) decreasing it the voltage lows down; slight
voltage variations can be obtained with a small
hammer and a screwdriver. In case the
variation of demanded voltage can not exceeds
5% is necessary to proceed to the replacement
of the insulating thickness (T) that forms the
air gap.