Safety Information; Storage Information; Introduction - WEG GRTA-2D Manual De Instalación, Operación Y Mantenimiento

1 SAFETY INFORMATION

To guarantee the safety of the operators, the correct installation and proper operation of the equipment, the following precautions
must be taken:
▪
Installation and maintenance services should be performed only by qualified personnel, using appropriate equipment;
▪
The product instruction manual and specific product documentation must always be consulted before proceeding with its
installation, handling and parameter setting;
▪
Adequate precautions should be taken to avoid drops, knocks and/or risks to the operators and the equipment.
Always disconnect the main power supply and wait for the alternator to come to a complete stop, before touching any electrical
component associated with the equipment including the control connectors. Do not touch the input and output connectors since
high voltages may be present even after the power has been switched off and keep them isolated from the rest of the main command
circuit of the alternator.

2 STORAGE INFORMATION

If the alternator needs to be stored for a brief period before its installation and/or start-up, the following measures should be taken:
▪
The regulator must remain in its original package or in a similar package which provides the same safety conditions against
mechanical damages, excessive temperature, and humidity to avoid rusting of contacts and metallic parts, damages to integrated
circuits or any other damage arising from improper storage;
▪
Properly packaged, the regulator must be kept in a dry and well-ventilated area away from direct sunlight, rain, wind, and other
adverse weather conditions to ensure the preservation of its operational functions.
Failure to comply with the above-mentioned recommendations could exempt the supplier of the equipment from any responsibilities
and liabilities from any resulting damages as well as voiding the warranty on the equipment or damaged part.

3 INTRODUCTION

The GRTA-2D automatic analog voltage regulators are compact while featuring high reliability and low cost. They were designed
with state-of-the-art technology for voltage regulation of brushless synchronous alternators.
Their control and regulation circuits use semiconductors and integrated circuits duly evaluated following the most demanding quality
requirements. Mechanical components for field flashing are not required, and its system is completely solid state and encapsulated
in epoxy resin suitable for maritime environments and able to withstand vibrations of up to 30 mm/s. It is fitted with internal voltage
adjustment by trimpot and external by potentiometer allowing an alternator voltage adjustment.
The PID control system is adjusted with two trimpots that adjust the proportional gain and the integral gain allowing a wide
adjustment range while allowing operation of the regulator with several types of alternators, and with a high number of dynamic
characteristics. The under-frequency protection set point is automatic, and the nominal operating frequency can be set to 50 Hz or
60 Hz by jumper.
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Automatic Voltage Regulator – GRTA-2D l 11