Safety Information; Storage Information; Introduction - WEG GRT7-TH4 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 generator 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 generator.

2 STORAGE INFORMATION

If the generator needs to be stored for a short period of time 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 so as 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 in order 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 GRT7 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 generators.
Their control and regulation circuits use semiconductors and integrated circuits duly tested 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 50 mm/s. It is fitted
with internal voltage adjustment by trimpot and external by potentiometer allowing a generator 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 generators, and with a high number of dynamic
characteristics. The under frequency protection set point is adjustable by trimpot, and the nominal operating frequency can be
set to 50Hz or 60Hz.
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