Speed Adjustment; Wiring Diagrams For Different Circuits; Initial Start-Up - Sincro FT Steel Serie Manual De Uso Y Mantenimiento

ENGLISH
2) Slacken the screws (A).
3) Adjust the air gap height by adding or removing insulator
spacers, noting that:
- increasing the air gap will increase the voltage
- reducing the air gap will reduce the voltage.
4) Tighten the screws (A).
5) Replace the cover and fasten it with the screws.
Start up the unit to check the no load voltage.
If the voltage is set any higher than its
maximum limit the generator may be
damaged.
CAUTION!
A

6.4.5 Speed adjustment

Frequency and voltage depend directly on the speed of
revolution, which must therefore remain as constant as pos-
sible when the load varies.
The speed adjustment system of the drive engines usually
gives a slight drop in revolutions between no load and load,
so when the no load speed is being adjusted, it is best to set
it at approx. 3-4% above the rated speed.
With this regulation the voltage provided by the alternator
when idling is approximately equal to the rated value.
24

6.4.6 Wiring diagrams for different circuits

In the appendix of this manual there are diagrams for any
connections other than the factory star-series (standard
unless otherwise specified on order).

6.4.7 Initial start-up

Before starting up the generating set, check that all external
connections are in order and that the protections are in
place.
During the initial start-up pay particular attention for any
unusual noises that might signal an incorrect alignment
between engine and generator.
Do not touch the generator while in
!
operation and straight after the generating
set has stopped, since certain parts may
WARNING!
still be very hot.
A
Generators are rotating electrical machines that involve
potentially hazardous live or moving parts, therefore the
following is strictly prohibited:
• an improper use
• removal of covers and disconnection of safeties.
The lack of routine check-ups and poor
!
maintenance can cause severe damage to
persons and/or objects.
WARNING!
Due to these inherent hazards, all work of an electrical or me-
chanical nature must be carried out by qualified specialists.