kVA
Type
50 Hz
60 Hz
E1S10M
G
5,5
7
E1S10M
H
7
8,5
E1S10M
I
9
11
E1S10L
L
10
12
E1S11M
A
10
12,5
E1S11M
AS
11,5
14
E1S11M
B
13,5
16,5
E1S13S
C/2
16
20
E1S13M
D/2
22
27
E1S13M
E/2
27
32
E1S13S
A/4
8
9,6
E1S13S
B/4
10
12
E1S13M
D/4
13
16
E1S13M
E/4
16
19
E1S13M
F/4
20
24
kVA
Type
50 Hz
60 Hz
E1S10M
G
5,5
7
E1S10M
H
7
8,5
E1S10M
I
9
11
E1S10L
L
10
12
E1S11M
A
10
12,5
E1S11M
AS
11,5
14
E1S11M
B
13,5
16,5
E1S13S
C/2
16
20
E1S13M
D/2
22
27
E1S13M
E/2
27
32
E1S13S
A/4
8
9,6
E1S13S
B/4
10
12
E1S13M
D/4
13
16
E1S13M
E/4
16
19
E1S13M
F/4
20
24
Winding-resistance Ω (20°C)
Aux
Alternator
Compound
winding
Rotor
I
1,80
19,50
2,24
0,270
1,24
21,00
1,83
0,141
0,92
22,70
1,75
0,101
0,65
23,50
1,70
0,085
0,75
22,30
1,60
0,075
0,63
22,30
1,54
0,070
0,46
24,60
1,47
0,043
0,48
10,26
1,20
0,052
0,28
12,30
1,10
0,030
0,23
14,00
0,90
0,019
1,58
5,73
1,49
0,128
0,97
6,82
1,31
0,083
0,61
7,95
1,20
0,046
0,46
9,72
1,07
0,030
0,38
9,86
1,15
0,024
Excitation of rotor
No load
Full load
V
(V)
I
(A)
V
(V)
EXC
EXC
EXC
26
1,30
95
29
1,30
111
28
1,20
115
30
1,30
115
30
1,35
114
30
1,35
128
34
1,35
133
24
2,30
86
24
1,90
92
32
2,20
110
20
3,35
56
22
3,20
62
26
3,15
76
33
3,30
89
35
3,35
95
6. VOLTAGE AND OUTPUT FREQUENCY ON THE THREE PHASE ALTERNATORS
These alternators are designed to supply the following voltage:
⇒ 400 V at 50Hz or 480 V at 60Hz with star/neutral connection
II
⇒ 230 V at 50Hz or 276 V at 60Hz with delta connection
1,550
1,550
1,550
7. SINGLE PHASE DUTY OF THREE-PHASE ALTERNATORS
1,550
The output power in single-phase, continuous duty is approximately 65% of three-phase output power if
1,350
line-to-line voltage is used and 60% (E1S10/E1S11), 40% (E1S13) if phase voltage is used (star connection).
1,350
1,350
0,648
8. VOLTAGE AND REVOLVING SPEED CALIBRATION
0,648
The voltage calibration should be carried out by qualified personnel only because of electrocution hazard.
0,648
The alternator's output voltage measurement should be carried out at the nominal revolving speed (3000 RPM for 2
0,540
poles alternators and 1500 RPM 4 poles).
0,540
Our alternators are usually factory set to supply nominal voltage.
0,540
Small deviations of the output voltage can be caused by a revolving speed which is different from the nominal one.
0,540
Actually, the output voltage changes almost proportionally to the revolving speed, around nominal speed.
0,540
To change the no-load voltage of the alternator at a specific revolving speed, it is necessary to operate on the air gap of the
compound transformer as described below (see figure 7).
1) Loosen the tightening of two screw nuts N.
2) Modify the air gap height, considering that:
I
(A)
a) by increasing it, the voltage increases;
EXC
4,00
b) by decreasing it, the voltage decreases;
4,10
however, small voltage variations can be obtained with a small hammer or a screwdriver on the compound moving part
4,20
so as to change the air gap thickness. When the required voltage change exceeds 5%, it is necessary to replace the air
4,50
gap insulating material (T) with a suitable one.
4,30
3) Once the calibration is carried out, tighten the two screw nuts N.
4,80
ATTENTION:
4,45
for a correct operation of the alternator, the voltage cannot exceed +/- 5% of the rated value.
7,75
7,50
7,50
9. GENERAL NOTES
7,80
Operation in particular conditions
7,50
If the alternator is going to be used in a canopy, make sure that only fresh air blows into it.
7,70
This can be ensured by placing the alternator's air inlet near the external air intake. Moreover, remember that the required air
7,50
flow is (at 50 Hz):
7,70
4 m3/min. for E1S10 type alternators
5 m3/min. for E1S11 type alternators
10 m3/min. for E1S13 type alternators
BEARINGS
The bearings of E1S type alternators are greased for life and therefore they do not require maintenances for at least 30000
working hours. When a genset general servicing is necessary it is recommended to wash the bearings with a proper solvent.
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