12638144 Installation, operation and maintenance manual – Synchronous Alternator – AG10 line - Horizontal l 31
4.8.2.3
Three-phase alternators with single-phase connection
W
IR
IN
G
D
IA
G
R
A
M
Single-phase zigzag parallel
Single-phase zigzag Series
Delta Single-phase
VOLTAGE ( V )
60Hz
L – L
200 - 240
440 - 480
220 - 240
L – N
100 -120
220 – 240
110 - 120
E1 - E3/4
(Sensing)
200 - 240
290 - 316
220 - 240
50Hz
L – L
190 - 200
380 - 400
190 - 200
L – N
95 - 110
190 - 200
95 - 100
E1 - E3/4
(Sensing)
190 - 200
250-263
190 - 200
T
E
R
M
IN
A
L
B
L
O
C
K
8 pins
8 pins
8 pins
12 pins
12 pins
12 pins
ATTENTION
The cables E1 and E3/4 refers to sensing voltage for AVR (see the AVR manual).
For delta single-phase connection, the sensing terminals of the AVR (E1 and E3/4) originally connected at the
main cables 7 and 9 and the auxiliary coil cable 4 originally connected on the terminal 9, must be removed
from the original position. Reconnect these cables as follows:
- Cables 4 and E3/4 on main cable 8.
- Cable E1 on main cable 1, as diagrams above.
Observe the single-phase power informed on the brochure.
4.8.2.4
Electrical connections of the voltage regulator
To perform correctly the electrical connections of the alternator with the AVR, refer to the AVR manual.
The voltage regulator model used depends on the characteristics of the alternator and the desired application, thus, the
electrical connections with the alternator and the identification of the terminals may differ from one model to another.
The manual of the voltage regulator is provided with the alternator.
The standard alternator AG10 has auxiliary coil.
It is not recommended that the alternator AG10 work without auxiliary coil, because with this configuration the power
supply of the voltage regulator is impaired in cases of short circuit or overload. This condition is allowed only in emergency
cases when there is failure of the auxiliary coil. As soon as possible, the alternator must be repaired to maintain the
original characteristics.
The alternators with auxiliary exciter are special and should be manufactured on request to WEG.
When using a transformer to adjust the reference voltage of the voltage regulator, the transformer cannot be installed
inside the terminal box of the main alternator.
