Xantrex PV-45208 User manual

OPERATION and MAINTENANCE
MANUAL
for
MODEL PV-45208
45 kW Grid-Tied Photovoltaic Inverter
Document #151710
Revision D October 11, 2002
IMPORTANTSAFETYINSTRUCTIONS
SAVETHESEINSTRUCTIONS-THIS MANUALCONTAINS IMPORTANT INSTRUCTIONS
FORXANTREXTECHNOLOGYMODELPV-45208 GRIDTIED PHOTOVOLTAICINVERTER
THAT SHALLBE FOLLOWED DURING INSTALLATIONAND MAINTENANCE OF THE PV-
45208. Xantrex Technology Inc.
161-G SOUTH VASCO ROAD
Livermore, CA 94551
[phone]
Copyright2002,XantrexTechnologyInc.

Product Description ................................................ Section 1
Introduction ............................................................................. 1-1
Major Components ................................................................. 1-1
Interconnection Standards Compliance ..................................... 1-2
Specifications .......................................................................... 1-3
Equipment Symbol ................................................................... 1-3
Safety ............................................................................. Section 2
Safety Features ........................................................................ 2-1
Isolation Procedure .................................................................. 2-2
Installation And Initial Turn-On ....................... Section 3
Isolation Transformer Requirements .......................................... 3-1
Torque and Wire Gauge Specifications ..................................... 3-1
Installation Instructions ............................................................. 3-2
Interconnection Wiring ............................................................. 3-4
Initial Turn On Procedure ......................................................... 3-7
Operation ................................................................... Section 4
Description of System Operation .............................................. 4-1
Operation Features .................................................................. 4-2
Operator Interface (LCD) ........................................................ 4-5
Example of Normal System Operation ..................................... 4-6
System Operating Parameters .................................................. 4-7
Troubleshooting ....................................................... Section 5
General ................................................................................... 5-1
Fault Conditions ...................................................................... 5-1
Fault Descriptions and Troubleshooting .................................... 5-2
Preventative Maintenance .................................. Section 6
Periodic Maintenance .............................................................. 6-1
Isolation Procedure .................................................................. 6-1
Turn-On Procedure ................................................................. 6-2
Appendix ...................................................................... Section 7
Drawings List .......................................................................... 7-1
Warranty and Certifications ...................................................... 7-1
Optional Accessories ............................................................... 7-1
Table of Contents

SECTION 1
PRODUCT DESCRIPTION
PV-45208 Photovoltaic Inverter
Operation and Maintenance Manual
Copyright 2002, Xantrex Technology Inc.
DOCUMENT: 151710 1-1
INTRODUCTION
The Xantrex Technology Model PV-45208 is a 45kW Grid Tied Photovoltaic Inverter. It utilizes ad-
vanced power electronics to allow the interface of a photovoltaic array with an utility grid. The PV-
45208 is a highly integrated assembly, consisting of an inverter bridge and associated control electron-
ics. The PV-45208 control software provides for complete overall system control with the required
protective and safety features.
MAJOR COMPONENTS
The major components of the PV-45208 are identified in Drawing No. 151712.
Main Enclosure
The enclosure (shown in Figure 1-1) is NEMA-3R rated. The PV-45208 enclosure contains the solar
control bus board, output line filter (insuring that the PV-45208 line currents meet IEEE-519 harmonic
distortion requirements), control power transformers, and A/C contactor. The upper enclosure contains
the operator interface panel ( LCD and an on/off switch).
Figure 1-1 Figure 1-2

SECTION 1
PRODUCT DESCRIPTION
PV-45208 Photovoltaic Inverter
Operation and Maintenance Manual
Copyright 2002, Xantrex Technology Inc.
DOCUMENT: 151710 1-2
Matrix Bus Board
The PV-45208 design makes use of a fully integrated matrix bus board as shown in Figure 1-2. The
bus board assembly is mounted to an aluminum extrusion heatsink, which is mounted between the
upper and lower enclosures. The power electronics is comprised of a three, dual pack IGBT devices,
mounted to the heatsink. The bus board is mounted on top of the IGBT dual pack devices, which is
supported through a series of standoffs attached to the heat sink.
CAUTION
The fuses within the PV-45208 are intended for protecting the PV-45208 control cir-
cuitry only. They are not intended to provide protection for the PV array or external
cabling.
SCU & DSP
INTERCONNECTION STANDARDS COMPLIANCE
The PV-45208 has been tested and certified by Underwriters Laboratories to be in compliance with
UL1741 Static Inverters And 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 test procedure performed by Underwriters Laboratory on the PV-45208 to verify it meets the rec-
ommendations of IEEE-929-2000. Refer to both documents for details of these recommendations and
test procedures.
Solar Control Unit (SCU)
The SCU consists of an integrated modulator
board and a DSP control board. The modulator
board contains isolated closed loop IGBT PWM
drive circuits, A/C and D/C high voltage mea-
surement circuits, A/C, D/C and ground current
regulation and measurement circuits, A/C
contactor controls, and binary I/O circuitry.
DSP
The DSP board interfaces to the modulator board
through a PC104 interface bus. The DSP board is
designed to the industry standard PC-104 speci-
fication, and is used to perform the majority of
the calculations needed to control the bus board.
The most significant tasks are: control of PV-
45208 electromechanical components and power
electronics converters, signal conditioning (digi-
tal filtering and transformations), and communi-
cation with the operator interface panel and sys-
tem sensors.

SECTION 1
PRODUCT DESCRIPTION
PV-45208 Photovoltaic Inverter
Operation and Maintenance Manual
Copyright 2002, Xantrex Technology Inc.
DOCUMENT: 151710 1-3
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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.
*Dependent on actual AC 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.
SPECIFICATIONS
The PV-45208 has been designed for photovoltaic power systems, which operate within the following
specifications. Application of the PV-45208 in a manner inconsistent with these specifications may
cause damage to the PV-45208 and other system components, and is a violation of the terms of the
warranty.