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PV-225208 Photovoltaic Inverter

Operation and Maintenance Manual

Copyright 2003, Xantrex Technology Inc.

DOCUMENT:  151811

4-2

SECTION 4
OPERATION

The user should be aware of the following conditions governing PV-225208 state transitions:

   • Utility power 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 LCD.

   • Most PV-225208 faults are latching and must be cleared at the operator interface keypad before

transitioning to another operating state.

   • The On/Off switch, located on the front door of the PV-225208, must be in the On position for all

operating states except Matrix Test, in which case it must be in the Off position.

OPERATION FEATURES

       Fixed Unity Power Factor Operation

The Xantrex PV Series grid tied inverters maintain unity power factor during operation. The control software
constantly senses utility voltage, and constructs the output current waveform to match the utility voltage. The
PV line of inverters are not capable of operation without the presence of normal utility voltage, nor are they
capable of varying the output power factor off unity.

     

     

     

     

     

Utility Voltage/Frequency Fault Automatic Reset

In the event of a utility voltage or frequency excursion outside of preset limits, the PV-225208 will stop
operation and annunciate a fault at the operator interface. Once the utility voltage has stabilized within accept-
able limits for a period of at least five minutes, the PV-225208 will automatically clear the fault and resume
normal operation. Voltage and frequency fault setpoints are detailed later in this section.

     Active Island Detection

Much concern has been given to the possibility of an inverter causing a ‘utility island’ condition during
a utility power outage. An island condition is defined as grid tied inverter maintaining operation and
supporting a load that has been isolated from the utility power source. This requires the load to be
closely balanced to the output power of the inverter as well as having a resonant frequency close to
60Hz. Needless to say, this is an extremely remote possibility. To insure this condition does not occur,
the PV-225208 control software contains an active phase-shift-loop algorithm, which destabilizes a balanced
load, which may otherwise be capable of maintaining inverter operation in the absence of utility voltage. This
feature has been extensively tested and proven to exceed the safety requirements of UL-1741 and IEEE-929-
2000.

     Ground Fault Detection

The PV-225208 is equipped with a ground fault detection circuit and current transducer. In the event of a 10
amp ground fault, the PV-225208 will execute an orderly shutdown and annunciates a ground fault at the
operator interface. (See Section 5, Troubleshooting).

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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