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1. necessary that the module be powered off and powered on again COMPACTVAR FRONTAL PANEL ADJUSTS Pl Scale End of scale calibration if a 100 setting range Wide is selected at DIP S4 or to calibrate the nominal value for medium of scale if a 10 Nar row setting range is selected at DIP 54 P2 Droop Adjustable from 0 to 5 Droop The 5 compounding rate is got with 90 rotor polar angle Normally used from 0 to 2 5 for parallel operat ing generators maintaining the correct re active load sharing The compensation will be initiated at Droop command In single generator system without cogeneration this function is not used P3 Proportional Gain adjust able from 1 to 20 Active if selected at corresponding DIP How this is a pure proportional amplifier this adjust has in fluence in dynamic regulation and static regulation It must be adjusted to get the fastest compensation of the input changes but without instability P4 Integration Time This is a integrative gain amplifier with integration time adjustable from 0 01 to 1 S Active if selected at corresponding DIP It must be adjusted to get the best stability pos sible with minimum overshoot and under shoot This portion of error amplifier is mainly responsible for the static regula tion and it must be selected in almost all cases e P5 Diferentiation Time adjust able from 0 01 to 1 S Active if selected at cor
2. selected the only action will be a Fail Relay signalization S2 Droop Internal External Se lects the power factor transducer source for Droop signal S3 Sensing Type Selects the type of the sensing Sample amp Hold that pro vides fast response but is a lille sensitive to wave distortions and Average that pre sents second order retard but is more in sensitive to wave distortions 54 Setting Range Wide Narrow Selects setting range narrow or wide 0 to 100 10 of the scale 5 Proportional Gain Enables the pure proportional gain error amplifier The value must be adjusted in the front panel for the best response without oscillations and minimum overshoot and undershoot Normally used in almost all applications S6 Integrative Time Enables the I portion of the error amplifier The inte grative time must be adjusted in the front panel for the best stability and to get the minimum overshoot undershoot and the fastest reaction time possible Normally used in almost all applications S7 Derivative Time Enables de rivative gain error amplifier The value must be adjusted in the front panel for the fastest reaction time but without oscillations and to get the minimum overshoot and under shoot Used in a few applications S8 Automatic Manual or Regula tor Drive At OFF it selects the mode Automatic or Regulator with regula t
3. Bulletin VEC205E ACA P GENERA ANSI RAB BJ VEC205D Series Static Exciters BULLETIN 210D The VEC 200 series is a family product that include AVRs Automatic Voltage Regula tors for Generators Static Exciter and Drivers for Synchronous Motors and Al ternators High Current Controlled Recti fiers or Simple 1 quadrant CC Motor Drive The VEC2OSE is an AVR Automatic Volt age Regulator Generator Static Exciter to be used in all types of alternators The VEC2OSE utilizes IGBT Insulated Gate Bipolar Transistor that dispenses sin cronism in the exciting power inputs A B and C and enables the use of continuous current supply like CC PMG Permanent Magnet Generator The PWM control is made at more than 1000 Hz frequency get ting very low dead time The VEC2OSE is an economical mono board architecture plug in reliable and good performance product The VEC2OSE has some incorporated func tions and protections The control signal type could be chosen when ordering The voltage sensing is made synchronous ly by sample and hold integrated circuit and than averaged which provides low second order retard and fast response time The VEC2OSE has separated P I D adjusts that together with the sensing char acteristics enable it to operate virtually in any machine Five adjusts are available at the front panel Seven LEDs signalizes its functions and fails conditions Eight DIP Switches at front pan
4. Factor function the correct polarity of the signal should be ver ified by this way You must load the gener ator in single mode none paralleled with inductive loads to get at least 0 80 induc tive PF with the Droop command closed and Short circuit the TC momentarily The output generator tension must increase a little Open the short in the TC The Volt age must decrease a lille If not change the polarity of the C T In normal operation the Droop command must be closed at all times if parallel operation are used and opened if parallel operatios are not used This way you avoid voltage umbalance at Droop circuit in parallel operations and get better static regulation in single mode The build up enable switch is used to en able the auto build up circuit It must be a momentary type switch It is not used if PMG is supplying the power Try operate at the two modes of Sensing 5 The TC and TP at connectors 10 3 and 9 3 substitutes the Power Factor Transducer at connector 7 3 for Droop purpose 6 All Wires to connector 3 Commom must be connected straight to it selected at DIP S3 and choose the one that best adapts in your system Prefer Aver age if is not apreciable diference because it s best insensity to wave distortion Operation Instructions After the gener ator got the nominal speed close the pow er enable switch Then momentarily close the Build Up Enable switch if the power is supplyed from the generat
5. I Integrative action Derivative time D derivative action Voltage scale and Droop percentage Automatic Build Up with manual enabling is available The mode of operation can be choused Automatic or Manual The manual opera tion can be used for a full range generator voltage adjust especially with auxiliary power supply for tests and characteris tics measurement purpose or used in emergency operation as a second channel manual or manual follow up The Manual mode or Drive mode can be used as a drive for an external regula tor actuating at the setting range input VEC205D BULLETIN 210D MINIMUM CONNECTION Simplified diagram EXCITATION TRANSFORM Or PMG SENSING TRANSFORM 115 VCA 30 VA MIN P T s R sss See iip B4 SENSING PHASE RT OPTION PowER 115 220 VCA VCC SEE TAG VEC205EC GENERATOR COLECTOR RING OR BRUSHLESS Notes 1 The Circuit Breaker CB2 and its conections is not used in case off PMG Permanet Magnet Generator 2 The Build Up Enable button is not used in case off use with PMG 3 IF used with PMG with 2 Phases connect input T togheter input R 4 Connect Power Input 1 and 2 to PMG if it s voltage range is adequate 5 All Wires to connector 3 Commom must be connected straight to it BULLETIN 210D DIP SWITCHES SELECTIONS S1 Inhibition On Fail Selects the Inhibition function of the output in case of fail If not
6. TERS AND TRANSDUCERS SYNCHRONISM CONTROL Box FOR SYNCHRONOUS MOTORS CROWBAR FOR SYNCHRONOUS MOTORS CROWBAR FOR TRANSIENT PROTECTION SPECIAL EQUIPMENTS
7. cations AVR and Static Ex citer for Synchro nous Alternators Available con trol signal 0 to 5 V 0 to 10 V Potentiometer 0 to 20 mA 4to20 mA Modes Voltage regulation with Droop by KVAR portion of the load Compound al lowing Reactive Droop Compensa tion for parallel op erated generators or electric network paralleling Cogen eration Trips Overvolt age Underfrequen cy Overtempera ture and Loss of signal Signalizers Power On Enable Droop Signal Loss Overvoltage Un derfrequency and Overtemperature Function Selec tions Inhibit On Fail P F Internal External P F Polar ity Setting Range Wide Narrow Pro portional Enable Proportional Inte grative Enable De rivative Enable and Mode Automatic Manual Power 3 phases or 2 phases diode bridge rectifier and PWM controler by IGBT Chopper Power can be sup plyed by AC od CC Source The VEC205E series VEC 20X is a good choice for generators exciters It can be used as AVR exciter for gener ators with auxil iary mechanical exciter or Brush less generator or it can be a Pow er Static Exciter for collector ring generators It was developed mainly to get high reliability and simplicity It can be applied in machines to 30 000 KVA and up The plug in monoboard en capsulated archi tecture allows clean and reli able assemblage The LEDs sig nalization and DIP switches makes th
8. connector 3 J9 COMPACTVAR ACCESSORIES Ultra Fast fuses Power Transformers Synchronism and sensing transformers Shunt amplifier VSA650A 60 mv 5V insulated Digital Potentiometer Servo control ler VSP510A Mult turn potentiometer panel with digi tal scale VP1020E Field Application Relay VR9045 Field Ground Fault Relay VR9030A Field Over Voltage Relay VR9031A e Step Out Relay VR9035A Field Loss Relay VR9034A Other protection relays Control Box M1 or M2 Crowbar SPARE PARTS Control Module VEC205EC X X X X X See Order Code Table Firing Modules VDE115A VV1 and VV2 Fans see custom data sheet at manual VRN1 and VRN2 Thermostats see custom data sheet at manual VC12 12 ways female connector VS204 3E Synchronism module ORDER CODE VEC205E X X XX X XXX X X X X bekk 1 110 VCA POWER SUPPLY 2 220 VCA 3 OTHER CURRENT NOMINAL CURRENT VOLTAGE SETTING 1 0TO 5 VOLTS POTENTIOM NOMINAL VOLTAGE POINT 2 0T0 10 VOLTS POTENTIOM ADJUST 3 4 0 20 4 0 020 E EXT POWER 120TO 5 VOLTS POTENTIOMET FACTOR 2 0 0 10 VOLTS POTENTIOM SYGNAL 3 4T0 20mA 420 TO 20 mA 0 W O FAN 12120 VAC 2 220 VAC FAN VOLTAGE EXAMPLE VEC205E 1 0050 150 1 2 0 Generator Exciter Control Power Supply 110 VCA Nominal Current 50 Amper Nomi nal Voltage 150 Volts Sett
9. e equip ment friendly and intuitive It allows simple commissioning and use Five options of input signals are available Varix can supply a complete line of Exciter includ ing digitals pro grammable models J3 COMPACTVAR GENERATOR EXCITATION AVR AUTOMATIC VOLTAGE REGULA TOR VOLTAGE REGULATOR FOR BRUSCHLESS ALTERNATOR OR WITH EXTER AUXILIARY ROTARY To 50 AMPERE FIELD CURRENT OR STATIC Ex CITER FOR COLLECTOR RING TYPE TO 1000 AMPERE FIELD CURRENT It allows keeping constant voltage at the generator output and getting reactive cur rent compensation in parallel operated generators for KVAR sharing with another machines or with the electrical supplier network The sharing of the reactive load is made by Droop method based in the machine Power Factor The Power Factor is digitally measured by means of signals from P T and C T in the stator circuits or by an external trans ducer like the GE Multilin SPM model In both cases the Droop rate can be ad justed from 0 to 5 The regulation mode can be selected by an external command to Constant Volt age or Compound Voltage with Reac tive Droop Compensation The protections Loss of Signal Genera tor Overvoltage Generator Underspeed and Exciter Overtemperature are active in this application Some parameters can be adjusted in the front panel Proportional Gain P pro portional action Integrative Time
10. el simpli fies the function selection The removable connector enables an easy control module change The control module VEC2OSEC is the core WINS ELIO AS V VEC205E EXCITATION TRANSFORMER of the system Wen plugged to power mod ule from 10 to 1000 Ampere forms the final equipment that could be an AVR a compact exciter or if mounted inside a pan el with auxiliary equipment like circuit breaker crowbar fuses and transformers a complete Generator Static Exciter sys tem The VEC205E is a good choice for reliable and economical equipment with a good performance The mono board architecture encapsulated Plug In modules allows high tolerance to hostile environment and to vi brations besides allowing easy maintenance with a simple module change The power semiconductors used are encapsulated in sulated base types highly reliable and al low clean assemblage and ease maintenace The control module uses a 3 phase or 2 phase diode bridge with IGBT for the PWM chopper There are two modes of KVAR compensa tion available for paralleling generators by an external power factor transducer or by an internal power factor transducer includ ed in module The sensed by the Pow er Factor transducer is added to the volt age readings to get the Droop by Reactive Power Factor Compensation method The IGBT Firing Module are fully encap sulated in high insulation epoxy resins COMPACTVAR VEC205E Appli
11. ing Point Adjust 0 to 5 VCC or Potentiometer External Power Factor Signal 0 to 10 VCC W O Fan VEC205D Static Exciter WITH VEC 205E For 5000 SYNCHRONOUS GENERATOR 205 PLUG IN CONTROL MODULE BULLETIN 210D COMPLETE SOLUTIONS FROM VARIX VARIX or its integrators can offer complete systems including panels circuit breakers fuses instruments GE Multilin Relays PLC and many others The equipment can be projected and dimensioned by our engineer ing personnel to satisfy the needs of the cus tomer Our field personnel can provide the Start Up Varix Brazil Rua Phelipe Zaidan Maluf 1501 Distrito Industrial Unileste Piracicaba SP CEP13 422 190 Phone 55 19 3424 4000 Fax 55 19 3424 4001 www varix com br e mail info varix com br Varix Electronics USA 10001 NW 50 Th Street Bldg 102 A Fort Lauderdale Florida 33351 Tool Free 1 800 238 6696 Phone 954 572 5535 Fax 954 572 0331 ANSI RAB VARIX ISO 9002 311034355V Quality System ISO 9002 Certified e STATICS EXCITERS FOR GENERATORS Statics EXCITERS FOR SYNCHRONOUS MOTORS AVRs AUTOMATIC VOLTAGE REGULATORS SOFT STARTERS FOR MOTORS POWER CONTROLLERS SSCs SOLID STATE CONTACTORS CONTROLLED RECTIFIERS UP TO 150 000 A CHOPPERS FOR MOTORS PROTECTION RELAYS FOR EXCITATION SYSTEMS DIGITAL RELAYS FOR CIRCUIT BREAKERS SUPERVISION TRANSMIT
12. ing must be at correct motor power cable C T must have secondary rating of 100 mA to 1A C T with secondary rate of 5 Ampere could damage the module The PT for sensing the voltage phase angle for internal power factor transducer must be connected at the cables not used for sensing the current phase angle the middle cable in this case The nominal volt age is 115 VAC 10 30 If the user chooses to use an external transducer for power factor the transduc er must supply the correct voltage to the APPLICATION EXAMPLE EXCITATION TRANSFORM SENSING TRANSFORM 115 VCA 30 VA MIN TRANSFORM 115 220 VAC VCC OR PMG 1 30 VA MIN Power Factor TRANSDUCER OPTION COLECTOR RING OR BRUSHLESS Notes 1 The Circuit Breaker CB2 and its conections is not used in case off PMG Permanet Magnet Generator 2 The Build Up Enable button is not used in case off use with PMG 3 IF used with PMG with 2 Phases connect input T togheter input R 4 Connect Power Input 1 and 2 to PMG if it s voltage range is adequate module corresponding to total range from totally inductive to totally capacitive The center range voltage must be equal to unity power factor The control signals are commented at control module drawing sheet The excitation must be applied only at nominal speed At Start Up before enabling definitive ly the Droop Power
13. ion based in the error signal At ON it selects Manual or Drive it means that the output is proportional only to setting signal reference In this mode there is not a local closed loop and the equipment is simply a drive for external regulators or a manual exciter VEC205D LEDS SIGNALIZATION Li Inhibit Yellow Signalizes that the equipment is powered ON L2 Power Enable Green Sig nalizes that the equipment is enabled by a signal at corresponding connector L3 Droop Enable Green Sig nalizes that there is a Droop command at corresponding connector L4 Signal Loss Red Signalizes Loss of Signal setting signal loss This function is enabled by the command signal at corresponding connector The condition is memorized until apower down occurs L5 Overvoltage Trip Red Sig nalizes a trip by excess of generated volt age L6 Underfrequency Trip Red Signalizes a trip by a machine underspeed L7 Overtemperature Red Signalizes an overtemperature condition in the exciter power heater exchanger Note There is a 2 to 3 seconds time delay to avoid erroneous tripping The trip con dition is memorized until a power down occurs if auxiliary power supply is used Otherwise if Inhibition on Fail is selected or relay signalization is used to trip the sys tem the indication will be lost To reset a memorized fail indication is
14. or If the remnant voltage of generator is at least 10 VAC the voltage will raise to near the nominal volt age Adjust the nominal voltage if neces sary level pre defined at Start Up The voltage needs not to be readjusted at any time Put the generator at bus closing the main circuit Breaker If itis a multi gener ator system the paralleling must be done with a synchronism indicator relay The Droop command contact must be closed Share the active load KVA at turbine reg ulators The AVRs will try to automatically share the reactive load KVAR Avoid changing the voltage setting of the regula tors to share ative loads It can be neces sary to readjust slightly the voltage of the generators to share the reactive power at the begining of the parallel operation only The loads must be shared proportionally to the rated generator s power Note During the Start Up all the regula tors must be adjusted with same Gain and Droop The Droop rate must be as low as possi ble mainly if the machines are identical Normally a 196 to 396 level is a good choice To turn OFF one generator first unload it at speed regulators then open the main circuit breaker to get it out of the bus them inhibit it at Power Enable open the switch and finally slow down the ma chine speed to zero Notes 1 The diagram is a simplified ver sion 2 Is advisable that signal connec tions be made with shielded cables with shield routed to
15. ower supply of 110 or 220 VAC depending off the model Connector 3 is the common connector for all the inputs Connector 4 is the setting input This in put can be chosen at order 0 to 5 VCC or 0 to 10 VCC or 500 Ohms or 10k Ohms digital scale potentiometer 0 to 20 mA or 4 to 20 mA Connector 5 is a auxiliary current source 10 mA for direct use of a potentiometer for setting range adjust 500 Ohms in a 5 VCC model or IK ohms in a 10 VCC model This output must be tight to con nector 4 for potentiometer use Connector 7 is the input for an optional secondary input signal or Droop signal same signal options This signal can be provided by a Power Factor Transducer Ex GE Multilin SPM model Hall ef fect sensor tachogenerator etc Connector 9 is the input for an optional voltage transformer for power factor sens ing Polar Angle sensing to get internal generation of Droop signal Connector 10 is the input for an optional current transformer for power factor sens ing Polar Angle sensing to get for in ternal generation of Droop signal The connector 6 is the input for a dry con tact for Power Enable command Connector 8 is the input for a dry contact for the Droop Enable command Connectors 11 and 12 are the N O Dry contact of the fail indication relay and DB9 are the common input con nectors DB2 is input for a N C dry contact of a temperature sensor common at DB1 Connectors DB6 to DB8 a
16. put 28785 CureniSowree 10 mac Relay Contat B10 B11 B12 Voluge 9 vec Fai Relay Contact pii pi2 cum 025 acc PowerSuppy mim m s watts ensing Input DB6 to DB 8 DB9 Input Voltage qg 18 vac Firing Signal pB10 10 DB15 DB9 CuremOwp 20 mace RISIT 30 ase von Fan Power Supply vouge uo vem BULLETIN 210D VEC205D COMPACTVAR FUNCTION BY TYPE OF APPLICATION The side table shows the functions avail able with the kind of action selection or P adjust and the range of adjust 0 To 5 VoLts SET In case of trip the output will be inhibited 1A SEI QES ON the corresponding LED wil be on turned on and the trip relay will be ener gized There is time retard of approximately 0 5 a Can Select Adjust SI ONP seconds for the effective actuation of the protection The error amplifier is a selectable P I D type Note that it is different of a unique Select Adjust 7 ON P5 PID amplifier This way it can be adapted n 0 01 1018 to virtually any process because its versa tility The user can select and adjust the re Sel Adj 0 to 10 B8 B3 Closed sponse types needed fier is mainly responsible for the staticregu x z lation Its Inteerative time is adjustable from QUE 0 01 to 1 Seg This portion of error ampli need
17. re the inputs for voltage sensing signal common at DB9 Connectors DB10 to DB15 are the outputs for the thyristors firing modules common at DB9 Signals to connectors 4 5 6 7 8 9 and 10 must be routed preferably with sepa VEC205D P Phase m 9 1 PHAS 9 10 I OPTIONAL SYGNALS B4 B7 0 to 5 VCC to 10 VCC 0 to 20 mA 4 to 20 mA ENABLE N O FAIL Com rated shielded cable with commom cable connected straight to connector 3 BULLETIN 210D BIMETALIC TEMPERATURE SENSING R SENSING S SENSING T COMMON 1 FIRING MODULE 2 FIRING MODULE 3 FIRING MODULE OVER CUR 4 FIRING MODULE OVER CUR GENERATORS EXCITERS This application is for all types of alter nators Collector Ring Brushless or Collector Ring with auxiliary rotary exciter IMPORTANT POINTS FOR WIRING AND START Ur Select the DIP as required Normally S1 ON S2 ON S3 ON S4 ON S5 ON S6 ON and S7 OFF The phasing at C T and P T at connec tors 10 3 and 9 3 must be exactly as shown The excitation transformer must have BULLETIN 210D VEC205D COMPACTVAR adequate power and tension to get the cor rect ceiling voltage The fuses must be ultra fast types with adequate T see data sheet The sensing transformer 30 VA must be connected to point that must be regulat ed The secondary nominal tension must be 115 VAC The C T for power factor sens
18. responding DIP It allows a fast com pensation of dynamic variations Nor mally utilized for generators with slow re sponse time It must be adjusted to get the fastest response and the best stability This portion of error amplifier is mainly responsible for dynamic regulation COMPACTVAR CONTROL MODULE ELECTRICAL DATA The side table shows the electrical data of the inputs and outputs of the control mod ule for both connectors the front con nector and the rear side DB15 connector Also some signals connected to the power module TB are shown Some signals are chosen at order This way the various options are shown separated The type and real data are filled in a data sheet that is sent with the equipment The data sheet shows some important infor mation including signals power compo nents date of delivery guarantee period input and output data etc The user s manual includes this bulletin electrical drawings mechanical drawings and the custom data sheet VEC205D BULLETIN 210D O to 10V Setting Jnputimpedsnce 10K ohms 50 Ohms Pot Seting B4 85 83 to ma bio 10V P FactorSygna 87 82 imutimpedince 10K Ext PowerFactorinput 87 83 oltage Phase Sensing B9 B3 Input Voltage 20 115 150 Volts Internal Power Factor Current P hase Sensing B10 B3 Input Current 0 1 1 Amper Internal Power Factor Droop Enable In
19. s to be selected almost all appli Select Inter Exter 82 OFF ON cations PR D m Q The first portion of the error amplifier is a pure proportional gain amplifier P and it TA 0 10 5 SE n tion It is necessary in almost all applica z tions to increase the response and to get I fast corrections It must be adjusted as high as possible avoiding instability and yet get BLE INDI IK ting fast response time with low overshoot INHIBIT COMMAND INDICATION and undershoot MANUAL SELECT The third portion of the error amplifier is a pure derivative gain amplifier D and it is mainly responsible for dynamic regulations ea pee ed UE us It is necessary in a very few applications to Natural mm mm increase the stability and get fast correc tions It must be adjusted as low as pos sible to get stability and better response time Avoid use if it is not necessary Dez sjej gt elo e l a ale ol gt pu gt a Fw gt gt us oo Jos u foo wa way eq maq Iwaq Iraq 2123111212 P lol fe os gt ro gt afl se eje lejeje 23 vj ea je ee COMPACTVAR CONTROL MODULE VEC205DC The side drawing shows the connections to top connector and rear connector DB15 of the VEC205EC To connectors 1 and 2 are plugged to the command p

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