Nanni Q1100 Series, User Manual

Page: 82 / 98

82
S08 ALTERNATOR
Once the connection has been made, check the tightening
torques of the terminals, which must comply with the
instructions given in the chapter “General tightening
torques”.
Once the connection is complete, refit the terminal box
cover.
NOTE!
The user’s power cables must be properly wired and
supported so as not to cause mechanical stress on the
alternator terminal block.
Rotation and sequence of phases
All ECP alternator fans are designed to rotate in both
directions.
Clockwise rotation, seen from the coupling side: the order
of the outgoing phases is L1, L2, L3.
Counter-clockwise rotation, seen from the coupling side:
the order of the outgoing phases is L3, L2, L1 (the order
is reversed).
Winding connection methods
The alternators are manufactured with 12 standard output
cables to allow different output voltages, for example, at
50 Hz, 115 V (ΔΔ) / 200 V (YY) / 230 V (Δ) / 400 V (Y).
ELECTRICAL CONNECTION
The operation must be performed by an electrical
service technician.
The electrical connection is provided by the end user and
is done at their sole discretion.
For entry into the terminal box, it is advisable to use cable
glands and clamps that comply with the specifications of
the user country.
Alternators must always be grounded with a properly
sized grounding conductor. Use one of the two dedicated
terminals (internal/external).
For the electrical connection, use suitable cables, sized
according to the alternator power. Make the connections
to the terminals as shown in the figure.
• A) Hexagonal nut
• B) Plain washer
• C) User cable