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PV-225208 Photovoltaic Inverter

Operation and Maintenance Manual

Copyright 2003, Xantrex Technology Inc.

DOCUMENT:  151811

4-1

SECTION 4
OPERATION

DESCRIPTION OF SYSTEM OPERATION

     

Overview

The PV-225208 is a fully automated grid-tied photovoltaic inverter. Manual interaction or control of the
inverter is necessary only in the event of a system fault. The following conditions govern PV-225208 operation:

Stable utility voltage and frequency must be present for all states of operation.

Fault states are automatic from any state of operation. A fault will cause the PV-225208 to immediately
stop processing all power. The fault condition will be reported to the operator interface.

The on/off switch, located on the front door of the PV-225208, must be switched to the on position for all
operating states.

Cycling the on/off switch attempts to clear any system faults and return the PV-225208 to normal opera-
tion.

     Operating States

A state machine implemented within the PCU control software governs the operation of the PV225208. There
are five steady-state operating states and numerous intermediate transition states. The intermediate transition
states provide an orderly progression from one operating state to the next. The user has the ability to manually
transition the PV-225208 between operating states from the operator interface keypad. Manual transitions are
initiated by entering a ‘Goal State’, where the goal state is the desired operating state. Given all applicable
system parameters are within acceptable limits, and the request is valid within the state machine, the PV-
225208 will initiate the proper sequence of operations necessary to progress to the requested goal state. Refer
to Figure 4-3 for a description of valid state transitions.

   •

Shutdown:

 The line interface controller is idle. The PCU monitors the status of the PV array and

utility grid, waiting in standby until the PV array is available to produce power to the grid.

   • 

 Fault: 

The PV-225208 has encountered a fault condition. When this happens, regardless of the PV-

225208 state-of-operation, the PV-225208 will stop processing all power and execute an orderly system
shutdown. A description of the fault and fault code will appear on the operator interface LCD. The Fault
state may be cleared from the keypad once the cause of the fault has been corrected. See Section 5 for a
complete description of all fault codes.

   •

Manual Current: 

This operating state is provided to evaluate the existing PV array V-I character-

istics. The PV controller regulates a constant amount of PV current as commanded by the user from
the operator interface keypad, up to the PV current limit of the PV-225208. If the user commands more
PV current than is available, the DC bus voltage will drop below the minimum bus voltage level and the
PV-225208 will return to Sleeping mode.

   •

Matrix Test: 

This operating state is provided to verify proper operation of the matrix and associ-

ated control electronics. There is no power transfer between the PV and utility in this mode.

   •

Power Tracking:

 This is the standard operating state of the PV-225208. The PV-225208 maximum

power tracker will demand maximum power from the PV array, given sufficient PV irradiance.

Содержание PV-225208

Страница 1: ...ETY INSTRUCTIONS SAVE THESE INSTRUCTIONS THIS MANUAL CONTAINS IMPORTANT INSTRUC TIONS FOR XANTREX TECHNOLOGY MODEL PV 225208 GRID TIED PHOTOVOLTAIC INVERTER THAT SHALL BE FOLLOWED DURING INSTALLATION...

Страница 2: ...nnection Wiring 3 4 Initial Turn On Procedure 3 6 Operation Section 4 Description of System Operation 4 1 Operation Features 4 2 Operator Interface 4 3 Manual State Transitions 4 5 Automatic State Tra...

Страница 3: ...roller andassociatedcontrolelectronics ThePV 225208controlsoftwareprovides forcompleteoverallsystemcontrolwithavarietyofprotectionandsafetyfeatures MAJOR COMPONENTS The major components of the PV 2252...

Страница 4: ...acitor bank and an aluminum extrusion heat sink with a cooling fan Afan is located above each matrix heatsink The PV array is tied logically to the matrix DC bus via the DC interface enclosure The emb...

Страница 5: ...necessary DC power supplies to support its operation INTERCONNECTION STANDARDS COMPLIANCE The PV 225208 has been tested and listed by Underwriters Laboratories to be in compliance withUL1741 Static I...

Страница 6: ...g a r o t S C 0 5 o t 0 4 g n i t a R e r u t a r e p m e T t n e i b m A m u m i x a M C 0 5 y t i d i m u H e v i t a l e R g n i s n e d n o c n o N 5 9 o T n o i t a v e l E t e e f 0 0 6 6 e v o...

Страница 7: ...ned while the PV 225208 is processing power from the PVarray the contact block will signal the PCU to stop processing power before the switch opens Fault Reporting Any fault conditions are reported to...

Страница 8: ...ion ThePV 225208then performsanorderlyshutdown Thefaultconditionwillremainuntiltheutilityvoltageandfrequencyhave returnedtonormalfor5minutes This method has been extensively tested and proven to excee...

Страница 9: ...is tied to ground the inverter will be damaged internally at power up Utility Side Isolation Transformer Requirements The utility side windings of the isolation transformer are configured WYE and mus...

Страница 10: ...for all connections to the PV 225208 CAUTION INSTALLATION INSTRUCTIONS Ventilation Considerations Maintain a minimum of 12 clearance in back front and both sides of the PV 225208 for proper cooling f...

Страница 11: ...Technology Inc DOCUMENT 151811 3 3 Figure 3 1 Figure 3 2 Cable Entry Area Lift Here Cable Entry Area Array Grounding NEC 690 41 42 requires the PV array to be earth grounded The PV 225208 chassis is...

Страница 12: ...225208 positive phasing sequence must be maintained throughout the installation process Refer to the System Sche matic in Section 7 of this manual for proper phasing convention The following wires for...

Страница 13: ...Manual Copyright 2003 Xantrex Technology Inc DOCUMENT 151811 3 5 Isolation Transformer H1 X1 X2 H2 H3 X3 Chassis Gnd Wiring Diagram PV 225208 Inverter To Single Point Electrical Distribution System G...

Страница 14: ...former If the wires are marked verify they follow the sequence on the line side of the isolation transformer and circuit breaker Verify the utility conductors are properly connected to the isolation t...

Страница 15: ...s line voltage frequency being read by the PCU It should read 60 0 0 5 0 7 Verify the On Off switch is in the Off position Close the PV array string disconnect switches Close the PV 225208 DC disconne...

Страница 16: ...ditionsetpointsarenotsetproperly refer to section 4 for detailed description of PV 225208 state transitions The PV225208 should not cycle if the setpoints are set properly Some field adjustable parame...

Страница 17: ...imits and the request is valid within the state machine the PV 225208willinitiatethepropersequenceofoperationsnecessarytoprogresstotherequestedgoalstate Refer to Figure 4 3 for a description of valid...

Страница 18: ...tage or frequency excursion outside of preset limits the PV 225208 will stop operationandannunciateafaultattheoperatorinterface Oncetheutilityvoltagehasstabilizedwithinaccept able limits for a period...

Страница 19: ...nt PPT Ramp T Once the PV voltage is ramped to the reference setpoint the PCU begins to adjust the commanded PV voltage around the reference setpoint seeking maximum PVpower The power tracker may only...

Страница 20: ...ltage and frequency has been provided as a simulation tool to verify the PV 225208 accurately detects and respondstoautilityexcursion Thistestshouldonlybeperformedbyatrainedservicetechnician Itispossi...

Страница 21: ...This will ask for a password Enter the password and press the ENTER button The LCD will prompt Change Goal State Press ENTER again The goal state menu will show on the LCD Scroll through the goal sta...

Страница 22: ...ating voltage 330Vdc the PV 225208 will transition to Sleeping To exit the Manual Current mode the user must manually command the PV 225208 to either Power TrackingorSleeping AUTOMATIC STATE TRANSITIO...

Страница 23: ...ity recovers for a period of five minutes thePV 225208willautomaticallyclearthefault thenresumenormaloperation ISOLATION PROCEDURE The following procedure should be followed to de energize the PV 2252...

Страница 24: ...all sources of power wait at least 5 minutes for internal capacitors to discharge H Fault triggered by hardware S Fault triggered by software 0000 No Faults No fault conditions are detected 002C 012C...

Страница 25: ...atrix Failure to Turn Off S Software was not able turn on or turn off the indicated switching matrix Attempt to clear the fault by either cycling control power or pressing the black reset button in th...

Страница 26: ...ammed limit Max AC Volt Possible causes SSR 1 inoperable Contactor K1 inoperable Utility voltage exceeded the allowable limit This fault is self clearing Once the utility voltage has recovered within...

Страница 27: ...hefaultandrestartthePV 225208 Ifthefaultissustained contactyourXantrexTechnologydistributor for assistance or service YY27 YY28 Line Over Current Fault S Currentinonephaseofthematrixhasexceededtheallo...

Страница 28: ...ver boards only Faulty CT wiring Verify the wiring between the PCU and the CT is properly connected and undam aged Refer to the system schematic in Section 7 CT defective Locate the current transducer...

Страница 29: ...Fan Operation Verify proper operation of the heatsink cooling fans located above the matrix heatsinks The fans operate when the K1 contactor is closed Remove any debris from the fans Internal Circulat...

Страница 30: ...t switch 5 Turn the on off switch to the on position Aftera15secondinitializationperiodanda5minutewakeupperiod thePV 225208willautomaticallybegin power tracking given the PV voltage is greater than th...

Страница 31: ...o C s e c r u o S t l u a F S H 2 6 0 0 h g i H o o T y c n e u q e r F e n i L S 3 6 0 0 w o L o o T e g a t l o V e n i L S 4 6 0 0 h g i H o o T e g a t l o V e n i L S A 2 1 0 t u O e m i T t p u...

Страница 32: ...V A N A N e g a t l o V e n i L o t e n i L t n e r r u C A e n i L 8 d a e R s m r A A N A N t n e r r u C B e n i L 9 d a e R s m r A A N A N t n e r r u C C e n i L 0 1 d a e R s m r A A N A N r e...

Страница 33: ...z H z H 3 9 5 5 0 6 3 9 5 y c n e u q e r F C A m u m i n i M t n i o p t e s t l u a f d n u o r G m u m i x a M t p u r r e t n I t l u a F 6 3 e t i r W s p m A 0 2 I 1 0 1 t n e r r u c t l u a f...

Страница 34: ...u T l l i w r e k c a r t r e w o p e h t f f o e c n e r e f e r e h t t a e g a t l o v e t a l u g e r t n i o p t e s f f O 0 n O 1 e t a R T P P 5 4 e t i r W c e S 0 0 1 T 1 0 5 0 e t a r e t a...

Страница 35: ...is at the Customer s expense Return transportation and insurance expense shall be borne by Xantrex For floor mounted inverter products generally 30 kW in rating and above warranty repairs or replacem...

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Страница 41: ...B2 1 151187 01 Fan 1 4 HP 208VAC 1 Phase 13 1 B3 1 151023 01 Fan 120V 4 Internal 14 1 PS1 1 160006 01 Power Supply Single Out 15VDC 15 1 TB4 1 150343 01 Block Terminal 2 Pos 16 2 TB2 TB3 1 119154 01...

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Страница 43: ...tor Xantrex Technology Part Description 1 1 1 151784 01 Fab Enclosure DC Interface PV225208 2 1 1 151754 01 Fab Panel Encl AC PV225208 3 1 S1 1 151669 03 Switch Dscnct Non Fuse 600V 800A 4 3 F1 3 1 15...

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Страница 45: ...embly 151810 Item Qty Reference Designator Xantrex Technology Part Description 1 1 1 151783 01 Fab Enclosure DC Interface PV225208 2 1 1 151755 01 Fab Panel Encl DC PV225208 3 1 S2 1 151669 04 Switch...

Страница 46: ...ATION DOC NO REV ECO DATE DRAWN Q C ENGR MFG A 1321 12 9 2002 CRF 151812 PART DESCRIPTION XFMR 225KVA 3 PHASE 60Hz 208Y MANUFACTURER SQUARE D MFG S PART NO XANTREX PART NO 208Y208 225TQ56373 Custom Bu...

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