Intended Use; Introduction; Control Of Id Plate; Operating Principle And Characteristics Of Voltage Regulation System - Sincro SK225 Serie Manuel D'utilisation Et De Maintenance

2. INTENDED USE

All generators are supplied with a declaration of
incorporation in accordance with European rules and
regulations as provided in final pages of this manual.
Furthermore generators are supplied on the following
basis:
• they shall be used as power generators or for related
functions;
• they shall be used in one of the following applications:
- mobile (with or without canopy - for temporary power
supplies);
- onboard (marine use); after certification
- on commercial vehicles (freight transport / cold storage,
etc.);
- on rolling track (auxiliary power);
- on industrial vehicles (earth handling, hoisting, etc.);
- stationary installation (industrial, factory / plant);
- stationary installation (residential, commercial and light
industry, house / office / hospital);
- energy management (cogeneration, peaks shaving);
- alternative energy schemes;
• the standard generators are designed to satisfy
"industrial" electromagnetic emission limits and immunity
standards. In the event that generators have to comply
with electromagnetic emission limitations for residential,
commercial and light industrial zones, some additional
accessories may be necessary;
• the installation wiring diagram requires that the generator
housing is connected to the earth conductor, using an
adequately sized cable with a minimum length possible;
• the use of any spare parts that are not genuine or
not expressly authorised shall free Sincro from any
warranty liability and any responsibility concerning
conformity to regulations and relevant consequences;
• installation, aftersales assistance and maintenance must
be carried out by properly trained staff with a knowledge
of the provisions of EC directives.

3. INTRODUCTION

On delivery inspect the generator to check it has not been
damaged during transport or that no parts are missing.

3.1 Control of ID plate

The generators can be identified by their ID plate. The
ID plate must be checked and compared with order
specifications.
GENERATOR LABEL POSITION
The Sincro Technical Office is always available for any
clarification.
4. OPERATING PRINCIPLE AND
CHARACTERISTICS OF VOLTAGE
REGULATION SYSTEM
The BL4-U AVR (Automatic Voltage Regulator) of SK225-
SK250 series, is supplied by the auxiliary winding. AVR
acts on the exciter stator, directly controlling the field
generated by the main rotor by means of the sequence
exciter rotor - diode bridge - main rotor.
The voltage regulator controls and keeps constant the
voltage of one phase.
Alternatively, the generator can be equipped with a digital
regulator type (AVR RD2). The RD2 AVR regulator controls
and maintains constant the average voltage of all three
phases.
A frequency control progressively deactivates the machine
when the drive engine speed drops below a pre-set,
adjustable threshold, preventing over-excitation at low
operating speeds and reducing the load engage effects on
the engine.
19