Xantrex Technology Power Supply PV 225208 User Manual

OPERATION and MAINTENANCE

MANUAL

for

MODEL PV-225208

225 kW Grid-Tied Photovoltaic Inverter

Document #151811

Revision C November 26, 2003

IMPORTANT SAFETY 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 AND MAINTENANCE

OF THE PV-225208.

Xantrex Technology Inc.

161-G SOUTH VASCO ROAD

Livermore, CA 94550

(925) 245-5400

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SECTION 1

PRODUCT DESCRIPTION

INTRODUCTION

The Xantrex Technology Model PV-225208 is a current following grid tied photovoltaic inverter, utilizing

state-of-the-art IPM (Intelligent Power Module), insulated gate bi-polar transistors (IGBT’s) and gate drive

circuits to allow interface of a photovoltaic array with a utility grid. The PV-225208 consists of an inverter

bridge, photovoltaic controller, and associated control electronics. The PV-225208 control software provides

for complete overall system control with a variety of protection and safety features.

MAJOR COMPONENTS

The major components of the PV-225208 are identified in Figure 1-1. Control components are identified in

Figure 1-2. For specific control components see Drawing No. 151808 located in Section 7 (Appendix).

Main Enclosure

This enclosure is NEMA-3R rated. The PV-225208 main enclosure contains the power electronic inverter

bridge, electrical and electromechanical control components, power supplies, system sensing circuits, and the

PV-225208 embedded control unit.Also found within the main enclosure are some of the system protection

devices (sense and control power fuses).

Figure 1-1

1-1

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SECTION 1

PRODUCT DESCRIPTION

AC Interface Enclosure

This enclosure is NEMA-3R rated. The AC Interface serves as the connection between the isolation

transformer/utility and the PV-225208. This enclosure is where theAC line fuses andAC disconnect switch

reside. For specific control components see Drawing No. 151809 in Section 7 (Appendix).

DC Interface Enclosure

This enclosure is NEMA-3R rated. The DC Interface serves as the connection interface between the PV

array and the PV-225208. This enclosure is where the DC disconnect switch and DC contactor reside. For

specific control components see Drawing No. 151810 in Section 7 (Appendix).

CAUTION

The fuses within the PV-225208 are intended for protecting the PV-225208 control circuitry

only. They are not intended to provide protection for the PVarray or external cabling.

Power Electronics Matrix

The power electronics converters are located at the top of the PV-225208 Main Enclosure. Each matrix is

comprised of switching transistors (IGBTs), transistor gate drive electronics, a laminated power bus, DC

capacitor 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 embedded

control unit manages the transfer of power between the DC bus and the utility grid.

Operator Interface

The operator interface is located on the front door of the PV-225208 main enclosure. It consists of an On/Off

switch and a keypad with liquid crystal display for control and monitoring purposes.All interface components

are NEMA-3R rated. Refer to Section 4 for detailed operation instructions.

Inductor Enclosure

This enclosure is NEMA-3R rated. It contains the necessary filter components to insure the PV-225208 line

currents and voltages meet IEEE-519 and UL1741 harmonic distortion requirements. Mounted on the right

and left side of the lower enclosure are inductor fans to allow cooling of the line filter components within. This

enclosure also serves as the mounting base for the PV-225208 main enclosure.

CONTROL COMPONENTS

The following assemblies are contained within the PV-225208 main enclosure as shown in Figure 1-2. For

specific control components see Drawing No. 151808 in Section 7 (Appendix).

Power Distribution Panel

This panel contains many of the Electro-mechanical, protective, and control power components neces-

sary to support the operation of the PV-225208.

1-2

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SECTION 1

PRODUCT DESCRIPTION

Power Control Unit (PCU)

The PCU is a Digital Signal Processor (DSP) based control board that performs numerous control and

diagnostic functions associated with PV-225208 operation. Its most significant tasks are control of PV-225208

electromechanical components and power electronics converters, signal conditioning for high voltage signal

inputs and communication with the operator interface panel and system sensors. The PCU also contains the

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 with UL1741

Static InvertersAnd Charge Controllers For Use In Photovoltaic Power Systems, as well as IEEE-

929-2000 Recommended Practice For Utility Interface Of Photovoltaic (PV) Systems.

IEEE-929-2000 provides guidance regarding equipment and functions necessary to ensure compatible

operation of photovoltaic systems which are connected in parallel with the electric utility. UL1741 is

the standard applied by Underwriters Laboratory to the PV-225208 to verify it meets the recommendations of

IEEE-929-2000. Refer to both documents for details of these recommendations and test procedures.

F-F

E-E

Figure 1-2

1-3

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SECTION 1

PRODUCT DESCRIPTION

SPECIFICATIONS

The PV-225208 has been designed for photovoltaic power systems, which operate within the following speci-

fications.Application of the PV-225208 in a manner inconsistent with these specifications may cause damage

to the PV-225208 and other system components, and is a violation of the terms of the warranty.

Nominal AC Line Voltage

Maximum AC Line Current

Nominal Line Frequency

Continuous AC Output Power

PV Maximum Voltage

208 VAC, +10% -12%

695 ARMS (at low line voltage)

60 Hz, +0.5 -0.7 Hz

225.0 kW @ 208 VAC 3 Phase

600 VDC

Peak Power Tracking Window

PV Minimum Peak Power Tracking Voltage

PV Maximum Operating Current

Maximum PV Array Short Circuit Current

PV Configuration

330*-600 VDC

330 VDC

710 ADC

1100 ADC

Monopolar negative grounded

**-20 to 50° C

Operating Temperature

Storage Temperature

-40 to 50° C

Maximum Ambient Temperature Rating

Relative Humidity

50° C

To 95%, Non-condensing

Derated above 6,600 feet

87 X 102 X 27

Elevation

Dimensions (in inches)

Weight

Approx. 1935 lbs.

NEMA 3R

Enclosure Type

UL Listing File

File-E199356

*Dependent on actualAC line voltage. Refer to Section 4 for detail on the minimum power tracking voltage.

**If ambient temperature is between -20 to 0° C, the unit must be powered up in standby for at least one

hour prior to going on-line.

EQUIPMENT SYMBOL

Chassis ground – Customer supplied system ground connection point. This symbol may be found near

a stud within the main enclosure. It is provided as a location to bond the electrical system equipment

ground.

1-4

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SECTION 2

SAFETY

SAFETY FEATURES

WARNING

The PV-225208 enclosure contains exposed high voltage conductors. The enclosure

doors should remain locked, except during maintenance or testing. These servicing

instructions are for use by qualified personnel only. To reduce the risk of electric

shock, do not perform any servicing other than that specified in the operating

instructions unless you are qualified to do so. Do not open the cabinet doors if

extreme moisture is present (rain or heavy dew).

On/Off Switch

The PV-225208 incorporates a maintained position on/off switch located on the front door of the main enclo-

sure. Under normal conditions, the on/off switch is in the on position. Turning the switch to the off position will

initiate a controlled shutdown of the PV-225208 and open theA/C contactor within the unit. TheA/C contactor

cannot be closed unless the switch is in the on position. The PV-225208 is prevented from being restarted until

the on/off switch is turned back to the on position. Cycling the on/off switch will reset the PV-225208 and

attempt to clear any system fault.

Main Enclosure Door Interlock Switch

The front door of the PV-225208 main enclosure is equipped with an interlock switch to preclude operation in

the event of the front door being opened. It is required that the PV-225208 main enclosure door handle be

padlocked during normal operation.

WARNING

The PV-225208 will immediately shutdown if the front dooris opened during opera-

tion. It is required that the PV-225208 main enclosure doorhandle be padlocked

during normal operations. Please make sure the unit is powered down, and isolated

from the utility grid and PVpanels, priorto opening the front door.Allow 5 minutes for

any stored potentials to be discharged, prior to opening the unit.

Disconnect Switches

Both AC & DC switches are equipped with lockout hasps for personnel safety. The switch enclosure

door will not open while the PV-225208 is running. In addition, the switch handle and shaft provide a door

interlock. The door cannot be opened when the switch is in the “on” position. The PV disconnect switch is

equipped with an auxiliary contact block which enables the switch to be used as a load break PV disconnect.

In the event a disconnect switch is opened while the PV-225208 is processing power from the PV array, the

contact block will signal the PCU to stop processing power before the switch opens.

Fault Reporting

Any fault conditions are reported to the operator interface. The LCD will display a text description of

the fault. Refer to Section 5, Troubleshooting, for detailed descriptions of system fault conditions.

PV Ground Fault Detection

The PV-225208 is equipped with ground fault detection circuitry (see section 3, installation and section 7,

system schematic for further detail). Upon detection of 10 amps of ground fault current, the PV-225208

executes an orderly shutdown, and annunciates a ground fault at the operator interface. The PV-225208 will

remain faulted until the ground fault is remedied and cleared at the operator interface (see section 5, trouble-

shooting).

PV-225208 Photovoltaic Inverter

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SECTION 2

SAFETY

Over/Under Voltage and Frequency

The over/under frequency and voltage detection setpoints have been chosen to be in compliance with

IEEE-929 and UL1741.

Fault Condition

(% of Nominal)

Voltage Range

VAC < 104

Trip Time

VAC < 50%

6 Cycles

2 Seconds

Normal Operation

2 Seconds

2 Cycles

50% < VAC < 88%

88% < VAC < 110%

110% < VAC < 137%

137% < VAC

104 < VAC < 183

183 < VAC < 228

228 < VAC < 285

285 < VAC

f < rated -0.7

f < 59.3

6 Cycles

f > rated +0.5

f > 60.5

6 Cycles

Anti Island Protection

A digital phase-shift-loop (PSL) circuit is implemented in the DSP inverter controller to prevent

“Islanding” of the PV-225208.

The DSP continuously makes minor adjustments to the power factor phase angle above and below

unity. In the event of a utility outage, these adjustments destabilize the feedback between the inverter

and the remaining load, resulting in an over/under frequency or voltage condition. The PV-225208 then

performs an orderly shutdown. The fault condition will remain until the utility voltage and frequency have

returned to normal for 5 minutes.

This method has been extensively tested and proven to exceed the requirements of UL 1741.

ISOLATION PROCEDURE

The following procedure should be followed to de-energize the PV-225208 for maintenance:

WARNING

The terminals of the PV input may be energized if the arrays are energized. In

addition, allow 5 minutes for all capacitors within the main enclosure to discharge

afterdisconnecting the PV-225208 fromAC and DC sources.

1. Turn the on/off switch to the off position.

2. Open the DC interface (PV array) disconnect switch.

3. Open the AC interface disconnect switch.

4. Open the isolation transformer circuit breaker.

5. Install lockout devices on the isolation transformer circuit breaker and PV disconnect switch.

PV-225208 Photovoltaic Inverter

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SECTION 3

INSTALLATION AND INITIAL TURN-ON

ISOLATION TRANSFORMER REQUIREMENTS

The PV-225208 UL1741 certification requires the use of a Xantrex Technology specified 225 kVA WYE/

WYE isolation transformer between the inverter AC output and the utility interconnection (See Appendix in

Section 7 for transformer dimensions and specifications. This custom 225 kVA isolation transformer is not part

of the 225 kVA inverter, but can be ordered as a separate item. If maintaining the listing to UL1741 is not a

requirement for your application, contact Xantrex Technology for a fact sheet describing the installation op-

tions and precautions for installing this inverter in a photovoltaic system that does not require UL1741 compli-

ance.

WARNING

Xantrex Technology requires installing an isolation transformer between the PV-

225208 inverter and the point of utility interconnection. Failure to do so could result

in catastrophic damage to the PV-225208 as well as the utility distribution system

and will void the product warranty.

Inverter Side Isolation Transformer Requirements

The inverter side of the isolation transformer is configured as a WYE, and is rated for 208 VAC. The neutral

(X0) connection on the inverter side must be left floating. If the neutral 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 must match the voltage at the

utility inter-tie. Verify that the transformer supplied matches the voltage requirement. Also, the transformer is

supplied with a neutral connection on the utility side. Connection of this utility-side neutral does not affect the

operation of the inverter. Check local jurisdiction for their requirements regarding the connection of this

neutral.

Contact your Xantrex Technology distributor if you have any questions regarding isolation transformer

requirements.

TORQUE AND WIRE GAUGE SPECIFICATIONS

The following torque specifications are to be used on all electrical interfaces made during installation

of the PV-225208.

Torque Table

Terminal Block or Bolt Size

3/8-16 Bolt (AC)

Torque Setting

250 in lbs./28.2 Nm

Terminal Block (DC+, DC-,

& DC Neutral)

275 in lbs/31.1 Nm

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SECTION 3

INSTALLATION AND INITIAL TURN-ON

The following table shows acceptable wire gauges to be connected to the PV-225208 AC and DC inputs.

Wire Gauge Table

Termination

Wire Range AWG

Up to 4 600MCM-#2

Conductors Per Phase

Compression Lug (AC)

Up to 8 600MCM-#2

Conductors for each (+) and

(-)

Compression Lug (DC+ and

DC-)

Up to 2 350MCM-#6

Conductors

Terminal Block (DC Neutral)

INSTALLATION INSTRUCTIONS

CAUTION

All wiring methods shall be in accordance with the National Electrical Code ANSI/

NFPA 70. All power conductors interfacing to the PV-225208 should be sized in

accordance with the National Electric Code ANSI/NFPA 70 and local codes. Large

gauge wire must have a minimum bend radius dependent upon the wire gauge (refer

to the National Electric Code, Article 373-6B). Take care to keep the wire bundles

away from any sharp edges which may damage wire insulation over time. Xantrex

Technology recommends using 250 MCM, 105 degrees C, minimum, copper wire

for all connections to the PV-225208.

Ventilation Considerations

Maintain a minimum of 12” clearance in back , front and both sides of the PV-225208 for proper cooling fan

operation.

Installation

1. Move the PV-225208 into place. Lift the PV-225208 from beneath the lower enclosure with a forklift as

shown in Figure 3-1. (See following page.)

2. Anchor the lower enclosure feet to the floor with a 1/2” anchor bolts.

3. Install all conduits needed for cable entry in the shaded areas of both AC and DC interface enclo-

sures as shown in Figure 3-2. (See following page).

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SECTION 3

INSTALLATION AND INITIAL TURN-ON

Lift Here

Figure 3-1

Cable Entry

Area

Cable Entry

Area

Figure 3-2

Array Grounding

NEC 690-41/42 requires the PV array to be earth grounded. The PV-225208 chassis is also bonded to the

PV safety ground terminal block. Refer to the system schematic in the appendix for further wiring configura-

tion.

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SECTION 3

INSTALLATION AND INITIAL TURN-ON

Ground Fault Detection

The PV-225208 is equipped with a ground fault detection circuit

and current transducer (CT1 in illustration). This circuit is active

when the PV array is grounded as described in the previous

section. In the event of a greater than 10 amp ground fault, the

PV-225208 will execute an orderly shutdown and annunciates a

ground fault at the operator interface. The PV-225208 will remain

faulted until the ground fault is remedied and cleared at the opera-

tor interface (see section 5, Troubleshooting).

CAUTION

The input and output circuits are isolated from the

enclosure and the system grounding, if required by sec-

tions 690-41, 690-42 and 690-43 of the National Electric

Code, ANSI/NFPA 70, is the responsibility of the in-

staller.

CT1

INTERCONNECTION WIRING

CAUTION

To reduce the risk of fire, connect only to a circuit provided with 800 amperes

@208VAC, or 400 amperes @480VAC maximum branch circuit overcurrent protec-

tion in accordance with the National Electrical Code, ANSI/NFPA 70.

The following wires for connecting the PV-225208 to external devices are not provided by Xantrex Technolo-

gy: (See installation diagram on pages 3-5.)

Connect 3-Phase 208 VAC inverter output (AC Disconnect switch) to terminals of the 208 VAC

inverter side of isolation transformer. The neutral on the inverter side of the isolation transformer

must be left floating. Ground loops will exist when the inverter starts switching, which will

cause the inverter to shut down due to phase over-currents and will result in damage to the

PV-225208. Also, insure that this neutral is not bonded to the isolation transformer frame. Be

sure to maintain proper phasing as shown in the system schematic found in Section 7.

Connect Isolation transformer grid side terminals 1, 2, and 3 to line circuit breaker. Be sure to maintain

proper phasing as shown in the system schematic found in Section 7.

PV frame ground to ground terminal block (TB3).

Connect PV+, PV-, and PV Safety ground to the DC interface enclosure’s designated termina-

tions. See Section 7 for further detail .

CAUTION

When connecting external AC wires to the PV-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.

Install all wires listed above. Refer to the Appendix in Section 7 for layout of the AC and DC inter-

face enclosures. Refer to the system schematic in Section 7 for more detailed terminal locations.

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SECTION 3

INSTALLATION AND INITIAL TURN-ON

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SECTION 3

INSTALLATION AND INITIAL TURN-ON

INITIAL TURN ON PROCEDURE

The following must be performed by an approved Technician:

The following procedures are intended to verify correct installation and proper operation of the PV-225208.

These steps are to be followed sequentially. Do not continue if any of the steps or results are unclear. Refer to

Section 4 for a detailed description of system operation. Refer to Section 5 for fault condition descriptions and

troubleshooting. Refer to Section 7 for detailed system schematics.

Visual Inspection, Isolation Transformer WYE/WYE

•

Verify the isolation transformer circuit breaker is open.

If a phase rotation meter is available, verify proper phase rotation at the line side of the isolation

transformer circuit breaker.

•

Insure the neutral on the inverter side is left floating. If the inverter side neutral is tied to ground,

the inverter will not function properly. Also, insure that the neutral is not bonded to the

isolation transformer frame.

•

Verify the inverter 208 VAC conductors are connected to the isolation transformer.

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 transformer.

Visual Inspection, PV-225208

•

Insure AC and DC disconnect switches are opened.

Remove the front cover from the inductor enclosure, open the door of the main enclosure, and

disconnect enclosures and inspect.

•

Verify all wire connections are tight.

Inspect the fiber optic cables between the PCU and the matrix driver boards. All fibers should be

snap-locked into their respective receivers/transmitters.

•

Insure all connector jack screws on the PCU and matrix driver board are tight.

Verify AC phase connections landed at the AC interface enclosure.

Visual Inspection, PV Array Wiring

•

Verify the PV+, PV-, and PV safety ground are isolated from each other. The safety ground must not

be tied to PV-.

Verify all PV fuses are installed.

Initial Power

•

Turn the On/Off switch, located on the front door to off.

With the DC disconnect switch opened, close one of the PV array string disconnect switches.

Carefully measure VDC across the PV +/- terminal block. The value should be the same as at the

PV array string disconnect switch. It should also be positive.

Close the PV disconnect switch.

•

Carefully measure VDC between the DC contactor negative (-) terminal and the DC switch positive

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SECTION 3

INSTALLATION AND INITIAL TURN-ON

(+) terminal. The value should be the same as at the PV array string disconnect switch. It should also be

positive.

•

Open all PV string disconnect switches.

Close the isolation transformer circuit breaker.

Verify 208 VAC voltage across the AC disconnect switch. If a phase rotation meter is available,

verify proper phase rotation at the AC disconnect switch.

Close the AC disconnect switch.

•

Verify 208 VAC voltage across the AC line fuses F1-3.

System Verification

•

Upon applying 208 VAC power to the PV-225208, observe the operator interface panel.After approxi-

mately 15 seconds, the panel should finish initialization and will probably report a fault condition.

Remedy any faults reported. To clear a fault condition, press the <ENTER> key twice. If the fault message

does not change, the fault condition is still present. Most likely, any faults seen at this point will be related

to PV-225208 safety switches. To disable the door interlock switch with the main enclosure door opened,

pull the switch shaft out. It will lock in its ‘maintenance’ position. Once all faults are cleared the system will

read ‘Sleeping’or ‘Keyswitch Disable’depending on the position of the On/Off switch. To re-enable

interlock, push the shaft in and close the door.

•

Scroll up the menu until ‘Enter Read Parameter:’ is displayed.

Press <Enter>, then <19>. This is 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 disconnect switch.

Press <F2> on the operator interface panel. If the PV voltage is above the PV Start Voltage setpoint,

the second line should read ‘Waking Up’. Once the PV Start Time is exceeded, the PV-225208 should

transition to ‘PowerTracking’.

•

The power tracker was previously limited to 25% of PV-225208 rated power. Once the PV-225208 has

stabilized operation (approximately 20 seconds), scroll through the main operator interface panel menu.

Verify all phase voltages and currents are closely balanced.

Scroll to ‘Enter Read Parameter:’ Press <ENTER> then <17> <ENTER> to view ground fault

current value. This value should be equal to or very close to zero. Continue to monitor this value as

the PV-225208 is commanded to higher power levels.

•

Enter the write parameter menu and increase the ‘I PPT Max %’ to 50. Exit the write parameter

menu and verify all operating values are proper.

Continue to increment ‘I PPT Max %’to 100. Depending upon solar conditions, the PV-225208 may not

operate at full power. If the PV array is not experiencing full sun, the PV maximum power tracker will

regulate the PV voltage to maintain maximum PV power output. To determine if the PV-225208 has

reached it’s maximum power output, enter <20> at the ‘Enter Read Parameter:’‘0’means the PV-225208

has not reached maximum power, contrarily, ‘1’means the PV-225208 has reached maximum power and

executed the modified peak power tracker to limit output power.

•

The PV-225208 is now fully operational.

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SECTION 3

INSTALLATION AND INITIAL TURN-ON

Power Tracker Fine Tuning:

•

All PV-225208 operating parameters have been set at the factory, based upon prior experience with PV

arrays. Contact your XantrexTechnology distributor for further information.

•

It is recommended that the PV-225208 be watched during Wake-Up and Sleep Test. If the PV-225208

cycles between operating and sleeping at either of these times, the condition setpoints are not set properly

(refer to section 4 for detailed description of PV-225208 state transitions). The PV225208 should not

cycle if the setpoints are set properly.

NOTE

Some field adjustable parameters are password protected and may only be changed

by trained service technicians. In particular are parameters relating to utility pro-

tection setpoints. Any changes to these setpoints should be agreed upon by the

local utility and the equipment owner.

NOTE

Visually inspect the exterior surfaces for any damage (nicks, chips, exposed base

metal and scratches) that may have occurred during shipment orinstallation. Touch

up or recoat using White NISSEN Feltip Paint Marker, or equivalent to prevent

rust or corrosion.

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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.Afault 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.Adescription 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 PVirradiance.

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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.Afault 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 FaultAutomatic 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).

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SECTION 4

OPERATION

Current Imbalance Detection

In the event of phase-to-phase current imbalance of greater than 20% between phases, the inverter will ex-

ecute an orderly shutdown, and annunciate a fault at the operator interface. See Section 5, Troubleshooting,

for further information on this fault condition.

DC Overvoltage Detection

In the event of DC voltage greater than 600Vdc, the PV-225208 will execute an orderly shutdown and

annunciate a fault to the operator interface. If DC voltage remains greater than 600Vdc, the PV-225208 may

be irreparably damaged. See Section 5, troubleshooting for further information on this fault condition.

Peak Power Tracking

The PV-225208 control software employs an active PVpeak power tracker designed to maintain maximum

power output from the PV array at all times of operation. The peak power voltage point varies primarily

depending upon the temperature of the PV cells. The PV-225208 constantly seeks the optimum voltage and

current operating points of the PV array to maintain maximum PV power output. Upon PV wake-up, the

power tracker will increase power while ramping PV array voltage to the PV maximum power voltage refer-

ence setpoint (PPT V Ref). The change rate is governed by the power point ramp time setpoint (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 PV power. The power tracker may only adjust the

operating voltage +/- 20% of PPT V Ref. The PV maximum power voltage step and update rate are user

setable (PPT V Step and PPT Rate, respectively).

If available PVpower is above the maximum allowable power level of the PV-225208, the power tracker will

increase voltage as needed to maintain output power below rated maximum.

The minimum operating voltage of the PV-225208 is 330 VDC. The power tracker will not track voltage

below this point, regardless of the reference voltage setpoint.

Automatic Sleep Test

Toward the end of every solar day, the PV-225208 automatically determines when to stop producing power

dependent upon the output power of the inverter.As the net output power of the PV-225208 nears zero, a

timer is started to allow the inverter to ride through any brief irradiance reductions.

OPERATOR INTERFACE

The operator interface display consists of two main menu levels: The read parameter menu and the

write parameter menu. The read parameter menu consists of all system parameters, the date and time.

These can be viewed any time the PV-225208 has control power.

The write parameter menu consists of a goal state sub-menu, and all system write parameters. The write

parameter menu is password protected and may only be changed by trained service technicians. In

particular are parameters relating to utility protection setpoints. These have been set in the factory to

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SECTION 4

OPERATION

the limits mandated by UL1741.Any changes to these setpoints should be agreed upon by the local utility and

the equipment owner. The ability to adjust the voltage and frequency setpoints with respect to the actual utility

voltage and frequency has been provided as a simulation tool to verify the PV-225208 accurately detects and

responds to a utility excursion. This test should only be performed by a trained service technician. It is possible

to adjust the setpoints in a manner that will prevent the PV-225208 from functioning.

Upon system power up, the operator interface LCD will display the system operating state on the first

line. The second line will display the date and time. This is the standard display.

Refer to Section 7, Appendix for a complete description of all system read/write parameters.

NOTE

The operator interface display will reset itself to the standard display if there is no

input for 30 seconds.

Read

Parameter

Standard

Password

Display

Enter

Goal State

Password

Write

Parameter

Set Date/Time

Change

Parameters

Figure 4-2

Figure 4-1

Operator Interface Keypad

Operator Interface Flow Chart

Viewing Read/Write Parameters Values

To display any parameter, use the /\ or \/ keys on the operator interface keypad to scroll through the

read/write parameters. The \/ key will scroll downward through the menu and the /\ key will scroll

upward. Upon reaching the end of the menu, it will roll-over to the beginning.

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OPERATION

Write parameter values are password protected; however, they may be viewed in the read parameter

menu without entering a password. From the standard display press the /\ key. The display will read

‘Enter Parameter ID:’. Enter the desired write parameter ID, then press the ‘Enter’.

Refer to Section 7: Appendix, for a table of all read/write parameters and their descriptions.

Changing Write Parameter Values

From the standard display or anywhere in the read parameter menu, you may access the write param-

eter menu by pressing the <MENU> key. This will ask for a password. Enter the password and press

the <ENTER> button. Use the /\ or \/ key on the operator interface keypad to scroll through the write

parameters. To change the displayed parameter, press the <ENTER> button. Enter the desired value

and press <ENTER>. If the value entered is outside the acceptable range for the parameter, the original

value will remain. To leave the write parameter menu press the <MENU> button repeatedly until the

standard display shows on the LCD.

Refer to Section 7: Appendix, for a table of all read/write parameters and their descriptions.

Commanding Goal State Changes

From the standard display press the <MENU> key. 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 state menu with the /\ or \/ keys

until the desired goal state is reached. Press <ENTER>. The LCD will prompt: ‘Press F4 to Confirm’.

Press <F4> and the PV-225208 will transition to this goal state. If the goal state requested violates the

conditions of the state machine, the PV-225208 will remain in the previous state of operation.

Setting the Date and Time

From the standard display enter the write parameter menu (see previous). From the ‘Change Goal

State?’ prompt, scroll up with the /\ key until date/time parameter is reached. Press the enter key. The

date/time will be replaced with an underscore. Enter the proper date/time in a six digit format. For

example: The date is entered month-day-year: April 28, 2002 is entered 042802 <ENTER>. The time

is entered in military hours-minutes-seconds: 4:30 pm is entered 163000 <ENTER>. If the date/time is

entered incorrectly the original value will remain. Press <MENU> to return to the standard display.

MANUAL STATE TRANSITIONS

Refer to previous sections on commanding PV-225208 goal states.

•

Sleeping → Matrix Test → Sleeping:

Turn the On/Off switch to the Off position. Command the PV-225208 to Matrix Test. Once the user has

completed the test, command the PV-225208 to Sleeping. If the On/Off switch is turned to On while the

PV-225208 is in the Matrix Test state, the PV-225208 will transition to Sleeping.

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SECTION 4

OPERATION

Figure 4-3

PV-225208 State Machine

•

Power Tracking→ Manual Current→ Power Tracking or Sleeping:

Verify the PV manual current parameter (I Manual %) is set to the desired percent of rated. Com-

mand the PV-225208 to Manual Current mode from the operator interface keypad. While in the manual

current mode, the user may change the PV manual current parameter. However, the user may demand

greater current than the capacity of the PV array. If this causes the PV voltage to drop below the minimum

operating voltage (330 Vdc), the PV-225208 will transition to Sleeping.

To exit the Manual Current mode the user must manually command the PV-225208 to either Power

Tracking or Sleeping.

AUTOMATIC STATE TRANSITIONS

• Sleeping → Power Tracking → Sleeping:

The On/Off switch must be turned to the On position. Once the PV voltage exceeds the PV voltage

start setpoint (PV V Start) the PV-225208 will start a wake-up timer (PV T Start). If the PV voltage

remains above the PV start voltage setpoint for the duration of the wake-up timer, the PV-225208 will

transition to PowerTracking.

If the PV power drops below the PV power stop setpoint (PV P Stop) the PV-225208 will start a PV

sleep timer (PV T Stop). If the PV voltage and power remain below their respective setpoints for the

duration of the sleep timer, the PV-225208 will transition to Sleeping

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SECTION 4

OPERATION

•

Any State → Fault:

If the PV-225208 encounters a fault, regardless of operating state, it will transition to the Fault state. The

PV-225208 will remain in this state until the fault condition has been remedied and cleared via the front

panel.

A description of the fault will show on the first line of the operator interface LCD. The second line

of the LCD will read ‘Clear Fault?’. To clear a fault press <ENTER>. The PV-225208 will transition to

Sleeping. If the fault does not clear, the fault condition has not been corrected. If the ‘Clear Fault?’mes-

sage is not shown on the second line of the LCD, scroll through the read parameter menu with the /\ or \/

keys until the message appears.

AUTO-RESTART FEATURE

In the event of a utility voltage or frequency surge or sag, which causes the inverter to shut down, the

PV-225208 will automatically transition to a fault condition. Once the utility recovers for a period of five

minutes, the PV-225208 will automatically clear the fault, then resume normal operation.

ISOLATION PROCEDURE

The following procedure should be followed to de-energize the PV-225208 for maintenance:

1. Turn the On/Off switch to the Off position.

2. Open the DC interface (PV array) disconnect switch.

3. Open theAC interface disconnect switch.

4. Open the isolation transformer circuit breaker.

5. Install lockout devices on the isolation transformer circuit breaker and PV disconnect switch.

WARNING

The terminals of the PV input may be energized if the arrays are energized. In addi-

tion, allow 5 minutes for all capacitors within the main enclosure to discharge after

disconnecting the PV-225208 fromAC and DC sources.

TURN-ON PROCEDURE

Refer to Section 3 for a detailed first-time turn on procedure.

1. Remove any lockout devices from the isolation transformer circuit breaker and PV disconnect

switch.

2. Close the isolation transformer circuit breaker.

3. Close theAC interface disconnect switch.

4. Close DC interface (PV array) disconnect switch.

5. Turn the On/Off switch to the On position.

After a 15 second initialization period, the PV-225208 will automatically transition to ‘Waking Up’, given the

PV voltage is greater than the PV V Start setpoint.

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SECTION 5

TROUBLESHOOTING

GENERAL

In the event of a fault, the PV-225208 will annunciate the condition at the operator interface. The PV-225208

will execute an orderly shutdown and remain faulted until the fault is cleared (manually or automatically).

In general, the operator should respond to any PV-225208 fault as follows:

1. The source of the fault should be sought by referring to the following chart.

2. Rectify the fault condition and attempt to clear the fault by cycling the on/off switch.

3. If the problem cannot be corrected, note and write down the fault code and description, then contact

your Xantrex Technology distributor for assistance or service.

ALARM AND FAULT CONDITIONS

WARNING

Lethal energy may be stored within each matrix assembly. Use extreme caution

when troubleshooting. After disconnect 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 - Matrix Over-Temperature (S)

The temperature of the matrix (002C Matrix 1; 012C Matrix 2) aluminum heat sink exceeded 85°C.

Possible causes:

•

External cooling fan inoperable

Air flow on heat sink impeded due to accumulation of debris

Operation above rated ambient temperature for an extended period of time

002E - State Machine Failure (S)

Software has encountered an undefined state.

Attempt to clear the fault by either cycling control power or pressing the black reset button in the lower

left corner of the PCU. If the fault is sustained, replacement or service of the PCU will be necessary.

002F – Parameter Out Of Date (S)

Software has determined that the system variables within the operator interface panel do not match the

ones in the PCU. Generally this fault may be cleared and normal operation resumed.

0031 - Ground Current Fault (S)

The earth safety ground current has exceeded the maximum programmed value (Max Gnd Flt I).

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Possible causes:

•

Inspect the PV array for ground faults.

CT8 defective:Troubleshoot the ground fault CT8, located on the power distribution panel of the main

enclosure (see system schematic drawing in Section 7), using the procedures described in faultYY27.

0032 - PV Overvoltage (S)

The PV voltage has exceeded the maximum programmed limit (PV Max Volt).

Check the PV input voltage at the PV disconnect switch. If the voltage is below 600 VDC, clear the

alarm and restart the PV-225208.

0040 - In Programming Mode (S)

System is in reload PROM mode.

0042 - Bad Memory (S)

The static memory test failed upon system initialization. This fault is generally transient in nature.

Attempt to clear the fault by either cycling control power or pressing the black reset button in the lower

left corner of the PCU. If the fault is sustained, replacement or service of the PCU will be necessary.

0045 – Line Matrix Failure to Turn On (S)

0046 – Line Matrix 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 the lower

left corner of the PCU. If the fault is sustained, replacement or service of the PCU will be necessary.

0061 – Line AC Frequency Too Low (S)

The AC line frequency fell below the allowable limit.

This fault is self-clearing. Once the utility frequency has recovered within the acceptable operating

range, the PV-225208 will automatically clear this fault and resume normal operation after 5 minutes. If the

fault will not clear, verify the adjustable setpoint is below the actual utility frequency. If the fault is sustained,

contact your XantrexTechnology distributor for assistance or service.

0062 - Line AC Frequency Too High (S)

The AC frequency exceeded the allowable limit.

This fault is self-clearing. Once the utility frequency has recovered within the acceptable operating

range, the PV-225208 will automatically clear this fault and resume normal operation after 5 minutes. If the

fault will not clear, verify the adjustable setpoint is above the actual utility frequency. If the fault is sustained,

contact your Xantrex Technology distributor for assistance or service.

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0063 - AC Voltage Too Low (S)

TheAC Inverter voltage fell below the minimum programmed limit (MinACVolt).

This problem was caused by the utility. Clear the fault and restart the PV-225208.

Possible causes:

•

High momentary load which forces the inverter to current limit

Fuses F1, F2, F3, F4, F5 or F6 blown

SSR-1 inoperable

Contactor K1 inoperable

Utility voltage fell below the allowable limit.

This fault is self-clearing. Once the utility voltage has recovered within the acceptable operating range,

the PV-225208 will automatically clear this fault and resume normal operation after 5 minutes. If the fault will

not clear, verify the adjustable setpoint is below the actual utility voltage. If the fault is sustained, contact your

XantrexTechnology distributor for assistance or service.

0064 - AC Voltage Too High (S)

The inverter controller voltage exceeded the maximum-programmed 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 the acceptable operating range,

the PV-225208 will automatically clear this fault and resume normal operation after 5 minutes. If the fault will

not clear, verify the adjustable setpoint is above the actual utility voltage. If the fault is sustained, contact your

XantrexTechnology distributor for assistance or service.

012A - Interrupt Time-Out (S)

The PCU was not able to service the interrupt for approximately 1 second.

Attempt to clear the fault and restart the PV-225208 by pressing the black reset button on the lower left corner

of the PCU. If the fault is sustained, replacement or service of the PCU will be necessary.

0230 – Door Interlock Switch Open (H)

The door interlock lock switch located in the inside upper left corner of the main enclosure door is open.

If the switch is closed and the fault still registers on the front panel, isolate the PV-225208 from external power,

then:

•

Verify continuity across the switch contact block while the switch is closed.

Verify continuity between PCU-J2-5 and PCU-J3-3.

0430 - PV Auxiliary Switch Open (H)

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TROUBLESHOOTING

The dry contact auxiliary switch mounted to the PV disconnect switch has been toggled. The auxiliary

switch should be opened when the PV disconnect switch is open. If the fault will not clear when the PV

disconnect switch is closed:

• Isolate PV-225208 from utility power.

•

Close PV disconnect switch and check continuity between PCU J3-3 and PCU J2-7. If there is no

continuity, inspect wiring between the PCU and the auxiliary switch (see page 2 of the system schematic

for further detail).

XX25/XX26 - Line Gate Drive Fault (S)

One of the IGBT gate drive boards signaled the PCU that there was a fault. The second two digits refer to

which matrix has the fault. XX25 refers to matrix 1 and XX26 refers to matrix 2. The particular device at

which the fault was detected is indicated by the first two digits of the fault code, as follows:

XX: 01 = Phase A+

04 = Phase B+

02 = Phase A-

08 = Phase B-

20 = Phase C-

10 = Phase C+

If more than one phase faults simultaneously, the error code will contain the summation of phase fault

values. For example, if phaseA+ and B+ of matrix 1 fault simultaneously, the error will read 0525.

Make sure the fiber optics for the device and matrix in question are properly connected to the driver

board. Similarly, make sure the fiber is properly connected at the PCU.

Clear the fault and restart the PV-225208. If the fault is sustained, contact your XantrexTechnology distributor

for assistance or service.

YY27/YY28 - Line Over-Current Fault (S)

Current in one phase of the matrix has exceeded the allowable limit.YY27 refers to matrix 1 andYY28 refers

to matrix2. The faulted phase is indicated by the first two digits of the fault code, as follows:

YY: 01 = Phase A

02 = Phase B

04 = Phase C

If more than one phase faults simultaneously, the error code will contain the summation of phase fault

values. For example, if phaseAand C of matrix 1 fault simultaneously, the error will read 0527.

Possible causes:

•

AC system wiring short: Inspect the AC power system for short circuits.

PCU Power Supply is defective: Verify +/-15Vdc sources, referenced to analog ground, on the

PCU. There are labeled test points on the PCU circuit board. Note: There are two isolated +15Vdc

power supplies labeled +15Vdc and +15Vdc Drv. The +15Vdc Drv power supply provides power

for the matrix driver boards only.

•

Faulty CT wiring: Verify the wiring between the PCU power supply and the CT is properly con-

nected and undamaged. Refer to page 2 of the system schematic in Section 7.

CT defective: Locate the current transducer for the matrix and phase in question (see control com-

ponents drawing in Section 7). With a digital multi-meter measure the voltage from CT pins 1, 2, and

3 to chassis ground. Pins 1 and 3 should read approximately +15 and -15Vdc respectively. These

voltages are sourced directly from the PCU. Pin 2 should read less than 20mV when no current is

passing through the CT window. If Pin 2 reads greater than 20mV, and the supply voltages are on

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SECTION 5

TROUBLESHOOTING

Pins 1 and 3 are correct, the CT may be damaged.

Clear the fault and restart the PCU. If the fault is sustained contact your Xantrex Technology distributor for

assistance or service.

0828 – PV Over-Current Fault (S)

Current through the PV CT has exceeded the allowable limit.

Possible causes:

•

PV system wiring short: Inspect the PV power system for short circuits.

PCU Power Supply is defective: Verify +/-15Vdc sources, referenced to analog ground, on the

PCU. There are labeled test points on the PCU circuit board. Note: There are two isolated +15Vdc

power supplies labeled +15Vdc and +15Vdc Drv. The +15Vdc Drv power supply provides power

for the matrix driver 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 for the PV leg in question (see control components

drawing in Section 7). With a digital multi-meter measure the voltage from CT pins 1, 2, and 3 to

chassis ground. Pins 1 and 3 should read approximately +15 and -15Vdc respectively. These volt-

ages are sourced directly from the PCU. Pin 2 should read less than 20mV when no current is

passing through the CT window. If Pin 2 reads greater than 20mV, and the supply voltages are on

Pins 1 and 3 are correct, the CT may be damaged

Clear the fault and restart the PCU. If the fault is sustained contact your Xantrex Technology distributor

for assistance or service.

8021 - DC Bus Voltage High (H)

The DC Bus voltage has exceeded the maximum allowable limit.

This fault is generally transient in nature. Clear the fault and attempt to restart the PV-225208.

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SECTION 6

PREVENTATIVE MAINTENANCE

PERIODIC MAINTENANCE

Xantrex Technology recommends that the following preventative maintenance be carried out on the

PV-225208:

Monthly intervals or as required:

NOTE

Visually inspect the exterior surfaces for any damage (nicks, chips, exposed base

metal and scratches). Touch up or recoat using White NISSEN Feltip Paint Marker,

or equivalent to prevent rust or corrosion.

Aluminum Extrusion Heatsink

Accumulation of dirt and debris on the aluminum extrusion heatsinks and fans will decrease the ability

to transfer heat, which can cause the PV-225208 to shutdown on over-temperature alarms. Inspect

the aluminum extrusion heatsinks and fans for accumulation of dirt and debris. Clean if debris is present.

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 Circulation Fan:

Verify the internal circulation fan is operating whenever there is utility power applied to the

PV-225208.

Inductor Enclosure Cooling Fans:

Verify these fans operate whenever the PV-225208 is processing power.

Six month intervals:

(See Isolation Procedure located on page 6-2, and perform prior to the following)

Enclosure Seals

Inspect the enclosure access panel seal. If damaged, replace with equivalent closed cell foam

gasket. Call your Xantrex Technology distributor for factory replacements or specifications.

Electrical Connections

Inspect the condition of all wiring within the PV-225208. Inspect all wire crimps and connections for

damage caused from high temperature. Check for corrosion. Replace any damaged wires. Verify all

mechanical connections are sufficiently tightened. Verify all conduction surfaces are clean and free of

corrosion.

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SECTION 6

PREVENTATIVE MAINTENANCE

Mechanical electrical connections will loosen over time. This is caused primarily by thermal cycling

during normal operation.As connections loosen, electrical impedance will increase at the connection,

eventually leading to fire and component damage. It is critical to check all electrical connections every

six months.

Inductor Enclosure

Access the inductor enclosure and remove any accumulated dirt and debris. Vacuum enclosure

whenever dust or dirt is present.

ISOLATION PROCEDURE

The following procedure should be followed to de-energize the PV-225208 for maintenance:

WARNING

The terminals of the PV input may be energized if the arrays are energized. In

addition, allow 5 minutes for all capacitors within the enclosure to discharge af-

ter shutting down the PV-225208.

1. Turn the on/off switch to the off position.

2. Open the DC interface (PV array) disconnect switch.

3. Open the AC interface disconnect switch.

4. Open the isolation transformer circuit breaker.

5. Install lockout devices on the isolation transformer circuit breaker and PV disconnect switch.

TURN-ON PROCEDURE

Refer to Section 3 for a detailed first-time turn on procedure.

1. Remove any lockout devices from the isolation transformer circuit breaker and PV disconnect

switch.

2. Close the isolation transformer circuit breaker.

3. Close the AC interface disconnect switch.

4. Close the DC interface (PV array) disconnect switch.

5. Turn the on/off switch to the on position.

After a 15 second initialization period and a 5 minute wake up period, the PV-225208 will automatically begin

power tracking, given the PV voltage is greater than the PV start voltage setpoint.

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SECTION 7

APPENDIX

FAULTS CODES

Refer to section 5 for detailed fault code descriptions.

H - Fault(s) triggered by hardware

S - Fault(s) triggered by software

Error

Code

Error

Code

Fault Source(s)

H/S

Fault Source(s)

H/S

0000 No Faults

0062 Line Frequency Too High

0063 Line Voltage Too Low

0064 Line Voltage Too High

012A Interrupt Time-Out

(S)

(H)

(S)

(H)

002C Matrix Over-Temperature

002E State Machine Failure

002F Software Parameter Out of Date

0031 Ground Current Fault

0032 PV Over-Voltage

(S)

0230 Door Interlock

0430 PV Auxiliary Contact Block

XX25 Line Matrix Gate Drive

YY27 Line Matrix Over-Current

0828 PV Over-Current

0040 In Programming Mode

0042 Bad Memory

0045 Line Matrix Control Failure to Turn On (S)

0046 Line Matrix Control Failure to Turn Off (S)

8021 DC Bus Voltage Too High

0061 Line Frequency Too Low

(S)

READ/WRITE PARAMETER MENU

Read-Only Parameters

Parameters

ID Type Units Data Limits Default Descriptions

Current States:

0-Initilizing

1-Key-Disabled

2-Sleeping

3-Starting

4-Power-Tracking

5-Manual Current

6-Matrix Test

7-Faulted

Current Operating

State

1 Read

N/A

Goal States:

0-Shut Down

1-Power-Tracking

2-Manual Current

3-Matrix Test

System Goal State

2 Read N/A

DOCUMENT: 151811

7-1

PV-225208 Photovoltaic Inverter

Operation and Maintenance Manual

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SECTION 7

APPENDIX

Parameters

ID Type Units Data Limits Default Descriptions

Fault Code

Read N/A

N/A

See Fault Codes Above

Inverter States:

0-Shut Down

1-Standby

Inverter State

Read N/A

N/A

2-Starting

3-Main-Setting

4-On-Line

Line A-B Voltage

Read Vrms

Read Arms

N/A

Line to Line Voltage

Line B-C Voltage

Line C-A Voltage

Line A Current

Line B Current

Line C Current

10 Read Arms

11 Read kVA

Inverter Real Power

N/A

Inverter Matrix

Temperature

12 Read

°C

PV States:

0-Shut Down

1-Sleep

2-Wakeup

3-Online

PV State

13 Read N/A

N/A

4-Sleep-Test

PV Voltage

PV Current

PV Power

14 Read VDC

15 Read ADC

16 Read kW

N/A

Ground Fault Current

Peak Power On/Off

17 Read Arms

18 Read N/A

N/A

0-On

1-Off

Inverter Frequency

19 Read

N/A

Maximum Inverter

Power

Maximum Line Power

Recorded by PCU

20 Read kVA

DOCUMENT: 151811

7-2

PV-225208 Photovoltaic Inverter

Operation and Maintenance Manual

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SECTION 7

APPENDIX

Parameters

ID Type Units

Data Limits

Default Descriptions

Maximum Line Power

Recorded by PCU

Maximum PV Power

21 Read kW

N/A

1:1

Maximum Inverter

Current (phase A)

Maximum Line Current

Recorded by PCU

22 Read Arms

23 Read ADC

N/A

Maximum PV Current

Available to be

Commanded by the PV

Power Tracker

Commanded PV

Current

1:1

Maximum AC Voltage

fault setpoint *

Maximum AC Voltage 32 Write Volts 190 < V < 229

Minimum AC Voltage 33 Write Volts 183 < V < 220

229

183

60.5

59.3

Minimum AC Voltage

fault setpoint *

Maximum AC

Frequency

59.3 < Hz <

60.5

Maximum AC Frequency

fault setpoint *

34 Write

35 Write

Minimum AC

Frequency

59.3 < Hz <

60.5

Minimum AC Frequency

fault setpoint *

Maximum Ground

Fault Interrupt

Ground fault current

setpoint

36 Write Amps

1 < I < 20

Peak Power Tracker

Reference Voltage

PPT V Ref

PV V Start

PV T Start

PV T Stop

PV P Stop

37 Write Volts 300 < V < 600

38 Write Volts 300 < V < 600

400

440

300

PV power tracker wake-

up voltage

Time delay for PV

wake-up

39 Write Sec

40 Write Sec

41 Write kW

0 < T < 1200

Time delay for PV sleep

test

0.2 < kW <

10.0

PV power point to begin

sleep test timer

1.0

* Inverter trips off line within two cycles on over/under voltage and frequency faults. It should be

noted that the voltage trip limits can be up to 1% off from the actual grid voltage at full load due to

the 1% regulation of the isolation transformer. The PV-225208 uses phase to phase voltage measurement

to detect the under/over voltage trip limits. For an unbalanced, single phase voltage variation of +10% and

-12% as per UL1741 the trip limits must be set to 220V for maximumAC voltage and 193Vfor minimum

AC voltage. Consult your local utility for their specific requirement.

DOCUMENT: 151811

7-3

PV-225208 Photovoltaic Inverter

Operation and Maintenance Manual

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SECTION 7

APPENDIX

Parameters

ID Type Units Data Limits Default Descriptions

Percent of maximum allowable

PV power tracker mode current

I PPT Max %

42 Write

43 Write

0 < % < 100

100

Percent of maximum allowable

PV manual mode current

I Manual %

Turns power tracker on or off. If

off the power tracker will

regulate voltage at the reference

setpoint.

PPT Enable

44 Write N/A

0 or 1

0 = Off

1 = On

PPT Rate

45 Write Sec 0.1 < T < 10.0

46 Write Volts 0 < V < 10.0

0.5

1.0

Power tracker update rate

Voltage perturbation step of

power tracker

PPT V Step

WARRANTY AND CERTIFICATION

Xantrex Inverter Warranty Registration

Underwriters Laboratories Compliance Of Standard UL1741

DRAWINGS LIST

151828 : Schematic, System, Grid Tied PV Inverter, PV-225208

151807 : Envelope Drawing, Grid Tied Inverter, PV-225208

151808 : Enclosure, Main, Control Components, PV-225208

151809 : Enclosure,AC Interface, PV-225208

151810 : Enclosure, DC Interface, PV-225208

151812 : Transformer, 225 kVA, 3-Pole, 60 Hz, 98% Efficient, 208Y/120 or 480Y/277

DOCUMENT: 151811

7-4

PV-225208 Photovoltaic Inverter

Operation and Maintenance Manual

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Xantrex Technology, Inc.

Distributed Power Markets

161G South Vasco Road

Livermore, CA 94550 USA

Phone +1 925.245.5400

Fax +1 925.245.1022

XANTREX PV SERIES LIMITED WARRANTY AND REGISTRATION

Xantrex Technology warrants all equipment supplied to Customer under this purchase

order against defects in workmanship and material for a period of (12) twelve months

from delivery, provided that the equipment has been operated and maintained in

accordance with the service manual provided with the equipment. Should Customer

give Xantrex written notice of any such defects within the warranty period, and

Xantrex’s inspection confirms the existence of such defects, Xantrex shall correct the

defects, either by repair or replacement, at its sole option.

For wall-mounted products (generally, below 30 kW in rating), defective products must

be returned to Xantrex or it Authorized Service Center in the original or equivalent

packaging. The cost of transportation and insurance on items returned for service 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 replacements are performed at the installation site. Xantrex’s material, labor,

freight and travel/living expenses associated with such repair or replacement shall be

borne by Xantrex.

In either case, Customer’s labor and travel/living expense shall be borne by Customer.

Xantrex will assume no expense, liability or responsibility for repairs made by or for

Customer without written authority from Xantrex. Xantrex shall not be responsible for

any consequential, incidental or similar damages.

THE FOREGOING WARRANTIES ARE IN LIEU OF ALL OTHER WARRANTIES, EXPRESS

OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF

MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.

Project Name

Customer PO #

Inverter Serial #

Delivery Date

______________________

Xantrex Authorized Signature:

________________________

Customer Authorized Signature:

________________________

Date

________________________

Date

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Xantrex Technology Inc. PV-225208

Photovoltaic Inverter

Major Parts List

Assembly Description: Main Enclosure, Control Components, PV-225208

Xantrex Technology Assembly # 151808

Item #

Qty

Reference Designator

Xantrex Technology Part #

Description

Upper Enclosure

1-151751-01

1-151775-01

1-150209-02

1-151614-01

1-151615-01

1-151774-01

1-150204-03

1-112129-01

1-111196-01

1-151782-01

1-113712-01

1-151187-01

1-151023-01

1-160006-01

1-150343-01

1-119154-01

1-112590-03

1-112590-01

1-117452-02

1-117452-07

1-117452-04

1-150329-01

1-151787-01

Fab, Enclosure, Upper, 2 Bay, PV225208

Assy, PCU, W/Power Supply, PV225208

Assy, Matrix

Transformer, 208:24V, 250VA, 1Phase

Transformer, 208:120V, 500VA, 1 Phase

Transformer, 2.4V, 5V 1-Phase

Contactor, 630A, 3-Phase

SSR, 10A, 240V

Capacitor, .15uF, 1000V, Ceramic Disc

Capacitor, 10 KVAR, 3P, 600V

CT, Hall Effect, 500A, AC

Fan, 1/4 HP, 208VAC, 1-Phase

Fan, 120V, 4", Internal

Power Supply, Single Out, +15VDC

Block, Terminal, 2-Pos

Block, Terminal, 4-Pos, 600V

Block, Fuse, 600V, 3-Pole

Block, Fuse, 600V, 2-Pole

Fuse, 15A, 500VDC

T3,T4,T5

SSR1,SSR2

C4,C5

CT1,2,3,4,5,6,8

B1,B2

PS1

TB4

TB2,TB3

F4-12

F13,14

F7,8

F9-12

F4-6,13,14

Fuse, 6A, 500VDC

Fuse, 1A, 500VDC

Switch, Interlock, Door

Current, Transducer, 1000A

Lower Enclosure

TB1

CT7

Qty

1-151750-01

1-151605-01

1-151024-01

Fab, Enclosure, Lower, 2 Bay, PV225208

Reactor, 3PH, 130uH, 312 Arms

Fan, 10", 600 CFM

Thermostat, Disk, Snap, 157 to 169C

Enclosure Door (Not Shown)

Assy, LCD, W/Keypad

L1,L2

B4,B5

TS1,TS2

Reference Designator

1-151530-02

Xantrex Technology Part #

1-151128-02

1-117906-01

1-150326-01

Switch, On/Off, 2 Pole

Contact Block, NC

151808

Sheet 2 of 2

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Xantrex Technology Inc. PV-225208

Photovoltaic Inverter

Major Parts List

Assembly Description: Enclosure, AC Interface, PV-225208

Xantrex Technology Assembly # 151809

Item #

Qty

Reference Designator

Xantrex Technology Part #

Description

F1-3

SA1

1-151784-01

1-151754-01

1-151669-03

1-151465-03

1-151785-01

1-114653-01

1-119648-01

Fab, Enclosure, DC Interface, PV225208

Fab, Panel, Encl, AC, PV225208

Switch, Dscnct, Non-Fuse, 600V, 800A

Fusebase, Sq Body Fuse Style

Fuse, Sq Body, 800A, 700V

Arrestor, Surge, MOV, 650V

Bracket, Surge Arrestor, Mntg

151809

Sheet 2 of 2

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Xantrex Technology Inc. PV-225208

Photovoltaic Inverter

Major Parts List

Assembly Description: Enclosure, DC Interface, PV-225208

Xantrex Technology Assembly # 151810

Item #

Qty

Reference Designator

Xantrex Technology Part #

Description

1-151783-01

1-151755-01

1-151669-04

1-151786-01

1-151792-01

Fab, Enclosure, DC Interface, PV225208

Fab, Panel, Encl, DC, PV225208

Switch, Dscnct, Non-Fuse, 600V, 1200A

Contactor, 3P, 750A, 120VAC coil

Block, Power Distribution, 1 Pole

TB5

151810

Sheet 2 of 2

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Xantrex Technology Inc.

161-G South Vasco Road

Livermore, CA, USA 94550

SOURCE CONTROL SPECIFICATION

DOC NO.

REV

ECO

DATE

DRAWN

Q.C.

ENGR

MFG

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

208Y480

225TQ56373 (Custom Built)

225TQ56374 (Custom Built)

1-151812-01

1-151812-02

DATA SOURCE:

http://www.squared.com/

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