Voltage Regulator; Electrical Features; Electrical Connections; Main Connection - WEG G Serie Manual De Instalación, Operación Y Mantenimiento

4.7 VOLTAGE REGULATOR

The electronic voltage regulator is designed to keep the
voltage of the alternator constant independently of load.
It may be mounted in the connection from the alternator
or on the control panel.
ATTENTION
Check in the Manual of the voltage
regulator the terminals, wiring diagram and
trimpots for adjustment.
A wrong connection can mean the burning of
the regulator and / or the alternator windings.
Defects caused by this reason are not
covered under warranty.

4.8 ELECTRICAL FEATURES

4.8.1

Electrical connections

The electrical connections of the alternator are
responsibility of the end user and should be done by
trained people. The connection diagrams can be found in
item 4.8.2.

4.8.1.1 Main connection

The main cable connections must be made in
accordance with the diagrams in this manual, using
tightening torque according to Table 4.9 for fixing cables.
Table 4.9: Tightening torque of terminal screws for fixing the
main cables
Screw diameter
M5
M6
M8
M10
M12
M16
NOTE
The tightening torques of electrical terminal
connections are informed in the alternators
terminal board.

Make sure the section and insulation of the connecting
cables are suitable for the current and voltage of the
alternator;

Before making electrical connections between the
alternator and the load or power grid, it is required to
do a careful check of the insulation resistance of the
winding, as shown in item 4.5.
10680382 Installation, operation and maintenance manual – Synchronous Alternator – G line - Horizontal
Tightening torque (Nm)
4 - 5
8 - 9
19 -21
38 - 42
67 - 73
143 - 157

4.8.1.1.1 Cables connection

Para obtenção de um contato elétrico eficaz, a conexão
dos cabos de ligação nos pinos da placa de bornes deve
atender a seguinte configuração:
To obtain an effective electrical contact, the connection
of the cables to the terminal block pin must comply with
the following configuration:
Figure 4.6: Cables connection
Figure 4.6 legend:
1. Steel nut
2. Steel pressure washer
3. Flat steel washer
4. Flat brass washer
5. Brass nut
6. Flat brass washer
7. Flat steel washer
8. Grid cable connection terminal
9. Alternator cable connection terminal
ATTENTION
This setting is valid to connecting the cables
directly to the terminal block pins
The brass washers and nuts should not be
replaced with other with different material as
they may impair the connection of the cables.

4.8.1.2 Grounding

The alternator must always be grounded with a cable
with suitable section, using the threaded hole located in
one of the feet thereof.
Figure 4.7: Grounding
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