Related Manuals for PEGASUS TECHNOLOGY GRTD-TH3
Summary of Contents for PEGASUS TECHNOLOGY GRTD-TH3
- Page 1 Digital Voltage Regulator GRTD-TH3 Installation, Operation and Maintenance Manual www.pegasustech.com.br Street: Marechal Castelo Branco, 784 Centro Sul – Schroeder SC - Brazil +55 (47) 3374-6301 MPBR[07-00002] Rev 04...
- Page 2 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.
- Page 3 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;...
- Page 4 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;...
- Page 5 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);...
- Page 6 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.
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Page 7: Table Of Contents
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 .............................. - Page 8 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) ................
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Page 9: Introduction
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). -
Page 10: Technical Features
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 E1 – 160 Vca à 300 Vca Vad trimpot adjustable sensing voltage range E2 –... -
Page 11: Block Diagram
BLOCK DIAGRAM Figure 1 – Block diagram www.pegasustech.com.br... -
Page 12: Reference
REFERENCE The voltage adjustment of the GRTD-TH3 controllers can be done via trimpot (Vad) or via analog input or digital input as shown in the diagram in figure bellow. The regulator will control the measured voltage using as a reference the sum of the 3 settings. -
Page 13: Pi Controller
The digital control block is show in figure bellow: Figure 4 - PI Controller The controller used by the GRTD-TH3 voltage regulator is a PI control. The adjustment of the two parameters that are the proportional gains KP, integral KI, are performed through the stability potentiometer. -
Page 14: Power Circuit
Figure 5 – Machine output varying the stability parameters POWER CIRCUIT The power circuit is show in figure bellow: Figure 6 – Power Circuit www.pegasustech.com.br... -
Page 15: Protections
The power circuit is a half wave rectifier controlled by a digital controller. The output of the power circuit is applied to the exciter terminals of the generator. For safety, the regulator should provide 20% to 30% more voltage than is required by the generator. The supply voltage of the regulator has a range of 50 to 280 Vac and supports transients up to 300 Vac. -
Page 16: Generator Overvoltage Protection
Figure 8 – Operation of protections GENERATOR OVERVOLTAGE PROTECTION ➢ Protection Reference: 25% of the reference voltage set by the trimpot Vad. ➢ Time for protection action: 1 second. ➢ Signaling: Alarm Led constantly lit in Strong Blue. EXCITATION OVERCURRENT PROTECTION ➢... -
Page 17: Limiters
LIMITERS Limiters act by limiting or changing the output of variables, keeping them at levels that do not harm the system. U/f LIMITER The U/f limiter is used to reduce the excitation voltage during motor shutdown. When reducing the rotation, the generator requires more excitation to maintain the voltage and to avoid this actuates the limit U/f. -
Page 18: Field Current Limiter
FIELD CURRENT LIMITER The GRTD-TH3 is programmed to limit the generator drive current after a certain time. This time allows the generator to respond to transients that require a high excitation current without affecting the dynamics of the regulator. The limiter uses a PI controller. When the limit condition is reached, the alarm will be reset. -
Page 19: Alarms
ALARMS Alarms are event signals which the regulator does not operate. MAXIMUM FIRING ANGLE ➢ Alarm reference: 100% firing angle of the thyristors. ➢ Time for alarm action: 1 second. ➢ Signaling: Alarm Led constantly lit in Yellow-Green. MICROCONTROLLER FAILURE ➢... -
Page 20: Phisical Protections
The figure 16 shows the position of the fuse. The GRTD-TH3 has a half-wave rectifier, the input current is the same as the field current. The fuse used is 10A with a fast acting feature to protect the equipment. -
Page 21: Function Trimpots
FUNCTION TRIMPOTS ➢ Vad: Voltage adjustment. Rotating clockwise increases the voltage; ➢ Stb: Stability adjustment. Rotating clockwise makes the faster response; ➢ Drp: Droop adjustment. Rotating clockwise increases the reagent compensation range; Figure 17 – Adjustment Trimpot's Note: The trimpot Stb is responsible for the dynamic adjustment of the PI controller. Turning clockwise leaves the response to the system faster, but takes control to a region of instability. -
Page 22: How To Connect To The Generator
HOW TO CONNECT TO THE GENERATOR DESCRIPTION OF GENERATOR CONNECTION TERMINALS The connection of the regulator to the generator is made through faston type connector. The identification of the connectors is shown below in figure 19. Figure 19 – Identification of connection terminals The table 3 shown the terminal list and its function. -
Page 23: Connection To The Generator Without Auxiliary Winding
CONNECTION TO THE GENERATOR WITHOUT AUXILIARY WINDING CONNECTION TO THE GENERATOR OPERATING IN (160 to 300Vca) Load Generator Figure 20 – Connection without auxiliary winding with generator operating in the range of 160 to 300Vca Attention ➢ Before connecting the regulator to the generator, refer to the installation manual for the nominal reference voltage;... -
Page 24: Connection To The Generator Operating In (330 To 600Vca)
CONNECTION TO THE GENERATOR OPERATING IN (330 to 600Vca) Load Generator Figure 21 – Connection without auxiliary winding with the generator operating in the range 330 to 600Vca Attention ➢ Before connecting the regulator to the generator, refer to the installation manual for the nominal reference voltage;... -
Page 25: Connection To The Generator With Auxiliary Winding
CONNECTION TO THE GENERATOR WITH AUXILIARY WINDING Load Generator Figure 22 – Connection with auxiliary winding with generator operating in the range of 160 à 300Vca [E1] or 330 à 600Vca [E2] Notes: For work only isolated (single) short circuit S1 e S2; If possible use a 10A/300Vca circuit breaker in series with terminal 3 connection to turn the regulator on and off. -
Page 26: Connection Diagram For Parallelism Of Generators
CONNECTION DIAGRAM FOR PARALLELISM OF GENERATORS For parallel connection, the CT must be connected in the same phase as the generator sensing voltage signal is connected. When you open the key that short circuits the CT of parallelism the regulator will begin the compensation of reactive ones. The current input S1 and S2 must be inverted if the compensation is occurring in reverse. -
Page 27: First Regulator Installation
FIRST REGULATOR INSTALLATION The voltage regulator GRTD-TH3 must be handled by a properly trained technician. Before starting the connection make sure that the regulator is suitable for use with the generator by checking the characteristic label. Also check the existing protections. -
Page 28: Bench Test Diagram
BENCH TEST DIAGRAM For the bench test connect a lamp at the output of the F + and F- fields, connect at terminals E3 / 4 and 3 to an AC source (between 180 and 220Vac) and make a jumper from connector 3 to connector E1, as Figure 24. -
Page 29: Dimensional
DIMENSIONAL DIMENSIONAL OF THE VOLTAGE REGULATOR (mm) Figure 26 - Dimensional top view Figure 25 - Dimensional front view MÓDULO DE CONECTIVIDADE IoT This product is prepared to connect via Bluetooth to transmit generator information, such as generator voltage, generator current, power factor, active, reactive and apparent power, excitation voltage, excitation current, also transmitting any fault excitation system indicating possible anomalies, for example in brushless generators burning rotating diodes, this product can detect problems related to the rotating diodes or other problems issuing a notification to the person in... -
Page 30: Creen Printing Symbology
Note: Temperatures for some internal equipment components can reach 150 ° C! FIRST USE? The GRTD-TH3 voltage regulator must be operated by a properly trained technician. Before starting the connection make sure that the regulator is suitable for use with the generator by checking the characteristic label. -
Page 31: Description Of Terminals And Connection Cables
DESCRIPTION OF TERMINALS AND CONNECTION CABLES All connections made to the voltage regulator must be made with the 2.5mm insulated female faston connector that is ideal for connecting your terminals. Regarding the cables to be used, the temperature at which the equipment will be subjected must be respected. -
Page 32: Preventive Maintenance
PREVENTIVE MAINTENANCE Periodic inspection of the equipment is necessary to ensure that it is clean and free of dust and other debris. The top of the equipment should be checked for cleanliness or dirt. It is vital that all terminals and wiring connections are kept free from corrosion. Only persons trained and authorized by the manufacturer are authorized to service this equipment, as improper intervention by an unskilled person may cause damage to the equipment and the generator. -
Page 33: Notes To The Person Responsible For The Maintenance And Installation Service
4.4. The following components are also excluded: FUSES, LAMPS, THYRISTORS, TRANSISTORS OF POWER, DIODES OF POWER AND VARISTORES; 5. The repair and / or replacement of parts or products at PEGASUS TECHNOLOGY's discretion during the warranty period will not extend the original warranty period;... -
Page 34: Problems, Causes And Solutions
PROBLEMS, CAUSES AND SOLUTIONS Defect Cause Solution potentiometer Dynamic mismatch. counterclockwise. Voltage generated oscillates Place a resistor in parallel with without load. Generator excitation voltage field, perform too low. necessary power resistance calculations to size the resistor. Decrease in engine speed Make adjustments to the Motor causing U / F protection speed Regulator. - Page 35 www.pegasustech.com.br...
- Page 36 www.pegasustech.com.br Street Marechal Castelo Branco, 784 Centro Sul – Schroeder SC - Brazil +55 (47) 3374-6300 www.pegasustech.com.br...