PEGASUS TECHNOLOGY GRTD-TH3 Manuale utente

www.pegasustech.com.br

Street: Marechal Castelo Branco, 784

Centro Sul –Schroeder SC - Brazil

+55 (47) 3374-6301

MPBR[07-00002] Rev 04

Digital Voltage Regulator

GRTD-TH3

Installation, Operation and Maintenance

Manual

www.pegasustech.com.br 1

Congratulations, you just purchased a high-quality product, read the instructions in this manual

carefully before installing the product. No part of this publication may be reproduced, stored in a

retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying,

recording or otherwise,withouttheprior writtenpermission of PEGASUSTECHNOLOGY. Offenders

will be subject to penalties provided by law.

This publication is subject to changes and / or updates that may result in further revisions of

the installation and operating manuals, in view of the continued improvement of PEGASUS

TECHNOLOGY products. PEGASUS TECHNOLOGY reserves the right not to automatically update

the information contained in these new revisions. However, at any time the customer may request

updated material that will be provided to you at no charge.

In order to spread and expand the market, PEGASUS TECHNOLOGY has acquired the

®GRAMEYER brand and with it all know-how, technology and quality of its production process

including simulations and equipment tests, our team is highly trained and qualified by engineers and

technicians capable of helping to solve any problem and doubt of our clients. This manual is always

supplied in printed form with the equipment.

This product has an interface to an IoT module, capable of transmitting information from the

generator.

* In the event of loss of the instruction manual, PEGASUS TECHNOLOGY may provide a separate copy, and if

necessary, additional information about the product. Requests can be answered, provided the serial number and model

of the equipment are informed.

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SAFETY INFORMATIONS

To ensure the safety of operators, correct installation of equipment and their preservation, the

following:

➢Only persons trained and authorized by the manufacturer are authorized to install this

equipment, as improper intervention by an unskilled person could cause damage to the

equipment and the generator;

➢Instruction manuals and the product identification label must always be observed before

installation,handling and parameterization;

➢Proper precautions should be taken against falls, physical shocks and / or safety risks to

operators and equipment;

➢Always disconnect the mains supply and wait for the machine to stop completely before

touching any electrical components associated with the equipment, this also includes the

control connectors. Do not touch the I/O connectors because high voltages may be

present even after power is disconnected and always keep them insulated from the rest

of the main generator control circuit. Check item screen printing symbology of this manual

to disconnect the equipment;

➢Observe the warning labels affixed to the equipment, "care tension" and "warm surface

care";

➢This equipament complies withIEC61010-1.

Do not touch the input and output connectors. And keep them always

isolated from the rest of the control circuit of the panel unless otherwise

advised.

Always disconnect the mains supply and wait for the machine to stop

completely before touching any electrical component associated with the

equipment, this also includes the connectors of commands.

Do not open the cover of the equipment without proper precautions, as

high be present even after disconnecting the power supply.

The electronic equipment cards may have components that are sensitive

to electrostatic discharge. Do not touch components or connectors

directly. If necessary, touch the grounded metal housing or proper

grounding.

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STORAGE INFORMATION

If the regulator needs to be stored for a short time before its installation and / or commissioning, the

following precautions must be taken:

➢The Regulator must be kept in its original packaging or packaging that meets the same safety

conditions against mechanical damage, excessive temperature and humidity to prevent

oxidation of contacts and metal parts, damage to integrated circuits;

➢The duly conditioned regulator must be stored in a dry, ventilated place where there is no

direct effect of the sun's rays, as well as rain, wind and other inclemencies, in order to

guarantee the maintenance of its functional characteristics;

➢After the regulator is properly packed and accommodated in such a way that it does not

absorb the vibrations and impacts suffered during transport, it will be able to be transported

by the different means.

➢Failure to comply with the above recommendations may void the supplier of the equipment

from any liability for the damage, as well as loss of warranty on the equipment or damaged

part.

Failure to comply with the above recommendations may exempt the

supplier any liability for consequential damages, and loss of warranty on

the equipment or damaged part.

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WHERE CAN THE EQUIPMENT BE INSTALLED?

The installation and/or commissioning of the equipment may be carried out in:

➢Generator connection box;

➢External panel near of the generator;

➢Any place protected from the environment near the generator;

➢This equipment is for internal use (IP00);

➢This equipment can’t be installed outdoors. Due to climatic conditions such as rain can

oxidize its terminals causing malfunction of the equipment and consequently malfunction

of the generator;

➢The installation of peripherals such as the extern potentiometer, switches and circuit

breakers must be installed near the equipment and in an easily accessible location;

➢The installation should be done in a closed metal enclosure (grounded or not) so that the

terminals are inaccessible where there is no opening that allows access to the equipment

and access must be done by means of a tool (Philips wrench, etc) remembering that the

terminals of the equipment should not be exposed and the peripherals installed in order

to comply with the IEC61010-1 standard;

➢This equipment can be installed in places that may be subject to vibration, heat, and

electromagnetic interface because it is designed to withstand such adverse conditions;

➢Generator connection diagrams vary according to generator type taking into account

generator voltage, excitation current, whether the generator is with or without auxiliary

coil, etc. All of these diagrams are clearly described in this manual.

Failure to comply with the above recommendations may exempt the

supplier any liability for consequential damages, and loss of warranty on

the equipment or damaged part.

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CONVENTIONS USED IN THE MANUAL

Some conventions regarding font types or formatting have been used in this manual to enable clear

and uncomplicated reading. The following are the main conventions used:

NOTE (upper case):Type (uppercase / lowercase) Notes and alerts represent important information

that should be observed by the operator or supervisor of the operation.

SUBJECT OF THE PAGE –At the edges of each page the reader can have a quick reference

of the main subject that is being dealt with in it, without it being necessary to use the indexes to

locate the desired information by simply browsing the manual.

Reference to headings and subheadings –References to headings and subheadings used

throughout the text to refer the reader to a more detailed topic on the subject or where the reader

can obtain the desired information contained in the manual are written in type Italic. Words or

expressions in a language other than current will also be written in Italic type.

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Summary 
INTRODUCTION......................................................................................................................................................8 
TECHNICAL FEATURES .......................................................................................................................................9 
BLOCK DIAGRAM................................................................................................................................................10 
REFERENCE......................................................................................................................................................11 
VOLTAGE ADJUSTMENT VIA VAD POTENTIOMETER..............................................................................11 
VOLTAGE ADJUSTMENT VIA ANALOG INPUT............................................................................................11 
VOLTAGE ADJUSTMENT VIA DIGITAL INPUT.............................................................................................11 
PI CONTROLLER ..............................................................................................................................................12 
POWER CIRCUIT..............................................................................................................................................13 
PROTECTIONS..................................................................................................................................................14 
GENERATOR OVERVOLTAGE PROTECTION.........................................................................................15 
EXCITATION OVERCURRENT PROTECTION..........................................................................................15 
ARMATURE OVERCURRENT PROTECTION...........................................................................................15 
ROTATING DIODE FAULT...........................................................................................................................15 
LIMITERS............................................................................................................................................................16 
U/f LIMITER....................................................................................................................................................16 
FIELD CURRENT LIMITER...........................................................................................................................17 
LOSS OF SENSING VOLTAGE ...................................................................................................................17 
ALARMS..............................................................................................................................................................18 
MAXIMUM FIRING ANGLE...........................................................................................................................18 
MICROCONTROLLER FAILURE.................................................................................................................18 
VIRTUAL SWITCH.............................................................................................................................................18 
PARALLEL OPERATION WITH REACTIVE COMPENSATION...................................................................18 
PHISICAL PROTECTIONS...................................................................................................................................19 
PROTECTION FUSE FOR EXCITATION FIELD............................................................................................19 
FUNCTION TRIMPOTS.........................................................................................................................................20 
IDENTIFICATION AND PURCHASE ORDER....................................................................................................20 
IDENTIFICATION AND PURCHASE ORDER.................................................................................................20 
HOW TO CONNECT TO THE GENERATOR.....................................................................................................21 
DESCRIPTION OF GENERATOR CONNECTION TERMINALS..................................................................21 
CONNECTION TO THE GENERATOR WITHOUT AUXILIARY WINDING.................................................22 
CONNECTION TO THE GENERATOR OPERATING IN (160 to 300Vca)...............................................22 
CONNECTION TO THE GENERATOR OPERATING IN (330 to 600Vca)...............................................23 
CONNECTION TO THE GENERATOR WITH AUXILIARY WINDING .........................................................24 
CONNECTION DIAGRAM FOR PARALLELISM OF GENERATORS..........................................................25 
EQUIPMENTS SUPPLIED WITH THE REGULATOR (STANDARD KIT)....................................................25 
FIRST REGULATOR INSTALLATION................................................................................................................26 

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CONNECTION STEPS......................................................................................................................................26 
NOTE: When the regulator is powered without any sensing voltage measurement, the regulator will not 
excite the regulator, accusing the Lack Phase limiter.....................................................................................26 
SHUTDOWN.......................................................................................................................................................26 
BENCH TEST DIAGRAM..................................................................................................................................27 
DIMENSIONAL......................................................................................................................................................28 
DIMENSIONAL OF THE VOLTAGE REGULATOR (mm)..............................................................................28 
MÓDULO DE CONECTIVIDADE IoT..................................................................................................................28 
CREEN PRINTING SYMBOLOGY ......................................................................................................................29 
FIRST USE?...........................................................................................................................................................29 
DESCRIPTION OF TERMINALS AND CONNECTION CABLES ....................................................................30 
SHUTDOWN...........................................................................................................................................................30 
PREVENTIVE MAINTENANCE............................................................................................................................31 
RISK REDUCTION................................................................................................................................................31 
NOTES TO THE PERSON RESPONSIBLE FOR THE MAINTENANCE AND INSTALLATION SERVICE32 
WARRANTY TERM...............................................................................................................................................32 
PROBLEMS, CAUSES AND SOLUTIONS.........................................................................................................33

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INTRODUCTION

The GRTD-TH3 digital voltage regulator is a compact device with features similar to analog voltage

regulators, increasing the reliability and protections of the synchronous machine. It is applied to

brushless generators (without brushes) with auxiliary coil or without auxiliary coil (shunt).

The project is intended for operationinside the generator's junctionbox. The aluminum base is made

of material with excellent creep resistance and has excellent dimensional stability under low load.

The variations of the properties of the aluminum under the variation of temperature are low as well

as the coefficient of thermal expansion. Most importantly, its characteristics are not affected by

electrical variations.

The equipment is configurable via the adjustment potentiometer for reference of armature voltage,

stability and "droop" and has voltage adjustments via analog input or via digital input. There are

"jumpers" for selection of operating frequency and type of CT used, PAR5 or PAR1.

The equipment has a state-of-the-art processor capable of executing 70 million instructions per

second and with a very high accuracy analog-to-digital converter capable of acquiring electrical

quantities with excellent resolutions allowing the equipment to perform fast and accurate

calculations providing excellent operability.

Connection to the generator is via FASTON connectors.

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TECHNICAL FEATURES

The following table indicates the main technical characteristics of the equipment.

Nominal output current

10 A

Forced output current for 1 minute

12,5 A

Fuse for protection of the power supply

10 A / 300 V

Vad trimpot adjustable sensing voltage range

E1 –160 Vca à 300 Vca

E2 –330 Vca à 600 Vca

Frequency of operation in the sensing voltage range

50 Hz ou 60 Hz

Generator voltage measuring range

0 à 840Vca

Generator minimum voltage for pre-excitation

5 Vca

Minimum generator frequency for control

22 Hz

Rated operating voltage (power)

220Vca

Power supply range (3 e E3/4)

50 à 280Vca (up to 300Vca in transient)

Frequency of operation of the power supply (Power)

50Hz ou 60Hz

Power fluctuation voltage (Power)

±30%

Maximum input power

1350VA

Power consumption (by equipment)

~13VA

Power connection

Single phase

Sensing voltage connection

Single phase

Rectifier gain ratio controlled (no load)

0,45

Maximum field voltage

135Vcc

Static regulation

< 0,5%

Limiter U/F

Adjusted to 54Hz or 45Hz

Dinamic response adjustable by trimpot Stb

8 à 500ms

Working temperature range

-40°C à 60°C

Storage temperature range

-20°C à 40°C

Maximum relative humidity

(operation and storage)

0 –80%

Pollution degree

Protection degree

IP00

Operation altitude

Less than 2000m or greater equal to 2000m

EMI suppression

Differential EMI filter class X2

Alarm signaling

Indication of the alarms on the RGB LED

Regulator LED OK

LED RGB Green flashing and 5V lit indicates OK status

Approximate weight

350g +/-10g

Analog input

± 10Vcc

Analog input variation

Variation: +/-15% of the reference voltage

Digital input variation

CW com UP e DW / ±10% of the reference voltage

Parallel operation - Droop

TC PAR/5A ou PAR/1A

Droop

Ranging de 0 à 10 % of the reference voltage

Protections

Generator overvoltage.

Generator over current excitation

Generator over current

Rotating diode failure

Lack of sensing voltage at the startup

Limiters

Thermal excitation limit (Excitation current)

U/F

Lack of sensing voltage in operation

Alarms

Maximum shot angle

µController failure

Resin

Polyurethane anti-flame (V0)

Base

Non-flammable cast aluminum (V0)

Relay (protection alarm)

NF –Ok | NA –On protection

(10A –250VCA/125VCA/24VCC)

Table 1 - Technical characteristics of the Regulator

Indice

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