THEIA™ HE-t String Inverter ~ 2.0 - 4.4 kWAC, 600 VDC USER MANUAL www.eltekvalere.
Information in this document is subject to change without notice and does not represent a commitment on the part of Eltek Valere. No part of this document may be reproduced or transmitted in any form or by any means — electronic or mechanical, including photocopying and recording — for any purpose without the explicit written permission of Eltek Valere.
Contents 1. Introduction .................................................................................................................................. 4 2. Product Overview ......................................................................................................................... 5 2.1. Standards and Approvals................................................................................................... 5 2.2. General Information .......................................................
1. Introduction The THEIA HE-t inverters are among the most efficient single phase grid connected (grid-tie) inverters on the market, which will result in high yields from the solar array. DC to AC In a grid connected photovoltaic system, the interface between the solar array and the utility grid consists of an inverter, which converts DC produced from the solar array into AC adapted to the voltage and frequency of the utility grid. Figure 1.
2. Product Overview This chapter gives an overview of the inverter with its supplied components, and how they are assembled. A brief explanation of how to unpack and handle the inverter safely is given, and symbols appearing both on the inverter and in this User Manual are explained. 2.1. Standards and Approvals THEIA HE-t inverters are compatible with the following directives and safety standards: Grid Protection VDE 0126 G83/1 C10/11 EN 50438 RD 1663, 663 AS 4777.2/.
2.2.3. Key Features • World’s highest peak efficiency for isolated inverters; up to 97.3% • Flexible system configuration • Monitoring 24/7 • Internal data logger with storage capacity of 15 minutes intervals for one week, daily intervals for one year or weekly intervals for thirty years • MPPT range: 230 – 480 V • DC voltage range: 220 – 600 V • Automatic ON/OFF switching and temperature regulation • Anti-islanding protection • Reverse DC polarity protection (diodes) • Theft protection 2.3.
2.3.1. Labels The product label is attached to the lower right side of the inverter housing. It contains important identification parameters and characteristics for the inverter, and must be clearly visible after installation. Figure 2.3.1: Product label Table 2.3.
2.4. Unpacking and Inspection To avoid damage to people and equipment the next instructions must be followed to unpack and lift the inverter safely. 2.4.1. Shipping Damage The THEIA HE-t inverters are thoroughly checked and tested in accordance with international standards and approvals prior to dispatch. They are carefully packed before shipping. However, if any damage to the inverter is found when delivered, please provide feedback to your local Eltek Valere representative immediately! 2.4.2.
2.4.4. Scope of Delivery • THEIA HE-t single phase inverter • Mounting bracket with lock clip • Installation Guide • Accessories: grounding strap NOTICE! The mating parts of the connectors are not part of the standard scope of supply, and must be provided by the system installer. 2.4.5.
The upper cover may only be removed by Eltek Valere authorized personnel. Removal of the upper cover by unauthorized persons voids the warranty! The lower cover protects the customer connection area, and may be removed by the system installer for electrical connection and maintenance of the inverter. Removing the lower cover: • Remove the four screws on the lower cover with a 4 mm hex key. • Take the cover off carefully. • Store the lower cover and screws safely to avoid loss or damage.
3. Safety Precautions This chapter contains instructions on how to install, operate and maintain the THEIA HE-t inverters safely. These safety precautions must be read thoroughly and understood prior to the installation, so as to be able to handle the inverter correctly and maintain the warranty of the product. 3.1.
3.1.2. Operation The inverter must only be operated in accordance with the information in this User Manual. DANGER: Operate the inverter as specified in this User Manual! The THEIA HE-t is a grid interactive inverter and must be used exclusively for its designed purpose, which is to convert PV-generated DC electricity into AC electricity to feed into the grid. • The inverter must be operated in its original and technically intact condition without any unauthorized modifications.
3.2. Site Preparations Observe the following precautions when mounting and installing the THEIA HE-t inverter on a suitable site. This is crucial to maintaining the efficiency of the inverter! 3.2.1. Mounting Sufficient ventilation and appropriate ambient temperatures are needed to prevent temperature build-up inside the inverter, which could lead to possible power losses.
3.2.2. Installation The installation of the inverter must be performed in accordance with the relevant local and national electrical regulations! DANGER: Ensure a safe installation of the inverter! Only persons who are qualified to install high voltage electrical equipment and are familiar with the electrical regulations applicable to the installation site may install the inverter.
3.3.1. Disconnection Devices Disconnection devices, switches or circuit breakers, enable a shut-off from the power source during operation. They protect the current-carrying conductors and other system components from power surges and system malfunctions, and help to shut down the inverter safely for maintenance and repairs. • Both AC circuit breaker(s) and DC switch(es) are recommended to facilitate maintenance work and repairs of the inverter.
AC Fuses • AC fuses protect the supply conductors between the inverter and the utility grid. • They are not part of the scope of supply, and must be provided by the system installer. • Follow the local and national electrical regulations regarding rating of the AC fuses. Table 3.3.2: AC current characteristics and fuse rating Inverter Model Max AC Current Fuse Ratings Tripping Characteristics Type THEIA 2.0 HE-t THEIA 2.9 HE-t THEIA 3.8 HE-t THEIA 4.4 HE-t 10.5 A 15.2 A 19.7 A 23.
4. Installation This chapter describes how to install the inverter correctly, both mechanically and electrically, and details important issues related to the installation. This information is addressed to qualified persons, who are educated in installing high voltage electrical equipment and who follow the installation order as described in this User Manual.
4.2.1. Wall Bracket Depending on the mounting surface, different mounting methods may be required to secure the wall bracket. The system installer is responsible for selecting the correct type and number of fixings suitable to support the weight of the inverter on the mounting surface. • The bracket is designed to support 80 kg / 176.4 lbs. • The inverter must be mounted in a vertical position! • Mount the inverter in compliance with the minimum distances to ensure optimum cooling (See 3.2.1. Mounting).
4.2.2. Inverter Attach the inverter to the mounting bracket as follows: • Locate the hooks for the carrier slots on the upper back of the inverter. • Locate the hooks for the steering slots on the lower back of the inverter. • With stringbox included: Use the locating pin taps on the stringbox. Figure 4.2.3: Hooks on the back of the inverter • Lift the inverter and guide the upper hooks into the slots on the bracket. • Align the lower hooks into the slots. • Slide the inverter onto the bracket. Figure 4.
• Ensure that the inverter is securely aligned in the bracket rails. • Using a 3 mm hex key, tighten the fixing clip with one screw in the inverter and one in the stringbox (if present). • Recommended torque is 1.0 Nm / 0.74 ftlbf. Figure 4.2.5: Screws through the fixing clip • For theft protection: guide the lock clip through the fixing clip, and fasten with a padlock. • The padlock is not a part of the scope of supply. Figure 4.2.
4.3. Electrical Installation Correct electrical connection is critical for achieving a safe, long-term and reliable operation of the entire PV system. DANGER: Ensure correct electrical connections! The electrical connections on the AC and DC side must be performed by qualified persons and comply with local and national electrical regulations and the instructions detailed in this User Manual. Basic PV System Overview Figure 4.3.1: Simplified PV system overview without DC grounding 4.3.1.
CAUTION: Use the correct conductors! The conductors must be listed for PV applications and the site environment and have the correct color coding to avoid material damage and bodily harm. • To ensure safe and efficient installation, maintenance and repairs the insulation colorcoding of the electrical conductors must be understood. Ensure compliance with the local and national electrical regulations! • Lead the conductors away from objects that can damage the insulation (sharp edges etc.). 4.3.2.
Stringbox with DC Switch and no DC Fuse Holders 1. CAN terminal 2. Ethernet connection 3. Internal DC terminal blocks 4. DC ground terminal 5. Stringbox with no fuse holders and DC switch 6. AC terminal block Figure 4.3.2: Customer connection area with stringbox with DC switch No Stringbox: Connector Panel 1. CAN terminal 2. Ethernet connection 3. Internal DC terminal blocks 4. DC ground terminal 5. Connector panel 6. AC terminal block Figure 4.3.
4.3.3. Grounding The THEIA HE-t inverter meets all relevant safety requirements and includes internal lightning protection. Appropriate grounding of the entire PV system limits voltage surges, gives a common reference point for the conductive parts and facilitates the operation of the overcurrent protection devices. 1. The DC ground terminal is located to the right of the –NEG terminal in the customer connection area and labeled GND/PE. 2.
4.3.4. DC Side (PV) Connections The DC connections includes wiring from the PV modules, possibly through a combiner box, to the inverter. The inverter may be configured with the optional Stringbox. DANGER: Never work with live wires! Disconnect the PV array before starting the connection on the DC side, as the PV array can supply up to 600 VDC to the inverter when exposed to sunlight. Ensure that the output voltage or current from the PV modules is zero.
Stringbox If provided, the Stringbox is attached to the bottom of the inverter, and provides PV string connection via the wiring that runs through either plug-in connectors or cable glands. A DC disconnect switch may be provided and mounted in the stringbox. NOTICE! Ensure the DC switch is in the OFF position when removing the lower cover to access the connection terminals. I = ON 0 = OFF Figure 4.3.5: DC disconnect switch There are three different configurations of the stringbox: 1.
*N4: Grounding terminal and terminal for the grounding strap *P4: Ungrounded terminal TB: Terminal Block TBS: Terminal Block Screw DS: DC Switch Figure 4.3.7: Stringbox with DC fuse holders and DC switch Positive grounded PV String • Connect the positive conductors from the positive connectors to the terminal block labeled Grounded and the negative conductors to the terminal block labeled Ungrounded. • Switch the conductors connected to *N4 and *P4.
2. Stringbox with DC Fuse Holders and no DC Switch The Stringbox can be equipped with DC fuse holders and plug-in connectors or cable glands, but no DC switch. A DC switch must be installed separately by qualified persons in compliance with the relevant local and national electrical regulations. P1, P2, P3: Positive connectors N1, N2, N3: Negative connectors BP: Blanking Plug Figure 4.3.
Wiring Diagram Positive grounded PV String Negative grounded PV String 3. Stringbox with DC Switch and no DC Fuse Holders This option is a Stringbox equipped with DC switch and plug-in connectors or cable glands, but no DC fuse holders. P1, P2, P3: Positive connectors N1, N2, N3: Negative connectors Figure 4.3.
Positive grounded PV String • Connect the positive connectors from the connectors to the terminals **N1, **N2 and **N3, and the negative conductors to the terminals **P1, **P2 and **P3. • Switch the conductors connected to **N4 and **P4. • Connect the grounding strap between **N5 and the DC ground terminal in the customer connection area (See 4.3.3. Grounding). Negative grounded PV String • Connect the grounding strap between **N5 and the DC ground terminal in the customer connection area (See 4.3.3.
P1’, P2’, P3’: Terminals labeled +POS (Positive) N1’, N2’, N3’: Terminals labeled –NEG (Negative) G1: DC ground terminal (See 4.3.3. Grounding) Figure 4.3.13: Customer connection area Positive grounded PV String • Connect the grounding strap between P3’ and G1. • With three strings, two of the string conductors must be connected to the same terminal, so that the grounding strap has a terminal for itself. Negative grounded PV String • Connect the grounding strap between N3’ and G1.
Connection Procedures • The DC conductors connecting the PV array to the inverter must each have a minimum rating of 600 VDC at all given operating temperatures. See NOTICE! on page 24 regarding maximum allowed DC voltage. • The DC conductor cables must be sized for correct temperature rating and sunlight resistance. Use copper wire with a cross section area between 6-16 mm2 /10-6 AWG and temperature rating of 90 °C/194 °F for all connections.
Follow the next instructions to avoid arcing when reconnecting the terminals: • Turn OFF the DC switch(es) and the AC circuit breaker(s). DANGER: Never work with live wires! The PV conductors are still charged after the DC switch in the Stringbox is turned OFF, due to power fed from the PV modules. Always turn OFF the remote DC switch and wait until the PV modules do not feed power. • Remove the PV connectors. • Check with a voltmeter if the terminals are discharged.
4.3.5. AC Side (Grid) Connections The AC connection includes wiring from the AC distribution panel through one or more circuit breakers to the AC terminal block of the inverter.
Connection Procedures 1. AC terminal block: GND: Ground terminal N: Neutral terminal (TN/TT) or Phase terminal (IT) L: Phase terminal 2. Cable gland Figure 4.3.15: Customer connection area with AC terminals • The current carrying conductors on the AC side must be rated for the current and have a cross section area of maximum 16 mm2 / 6 AWG.
Connection Procedures 1. CAN terminal 2. Ethernet connector 3. Network cable gland Figure 4.3.17: Customer connection area with network terminals • Ethernet: Use CAT5 or better and a maximum length of 100 m. • CAN: Recommended cable size is 0.21 mm2 / 24 AWG and a maximum length of 100 m. • Unscrew the network cable gland, and take out the grommet. • Three-way cable gland insert: Figure 4.3.18: Insertion of network cables in gland 1.
If several inverters are connected together, all inverters must be connected to the CAN bus before Start Up to benefit from single installation setup. Jumper Position for Termination Resistance With several inverters connected the jumper located behind the CAN terminal in Table 4.3.2 activates the termination resistance when the pins are short-circuited. This minimizes signal reflections in the cables and helps to avoid interference. • Single inverter: The two pins must be short-circuited (Default).
5. Start Up This chapter provides instructions to ensure a safe start-up of the THEIA HE-t inverter. 5.1. How to Start Up A minimum available voltage of 230 VDC and a DC power of >7 WDC is required before the inverter starts feeding power to the grid. AC Side • Turn ON the AC circuit breaker(s). DC Side • Turn ON the DC switch(es). 5.2.
5.2.2. Display The display on the front of the inverter contains a LCD screen, three LEDs and six function keys. Figure 5.2.1: Inverter display • To activate the display when the screen saver is ‘on’ (blank) any key may be pressed. • With sufficient AC power the display shows the Start Up screen: 5.2.3. Function Keys The function keys have the following uses: Table 5.2.
5.2.4. Start Installation Start Left or Right – CANCEL or OK Enter - Confirm Figure 5.2.2: Start up screen 1a. Language Selection 1b. Language Selection Default – English Enter – Call up the list of languages Up or Down - Navigate through the list to find the preferred language Enter - Confirm 40 User Manual THEIA HE-t String Inverters 357115.013, Issue 1.
2. Date Adjustment DD.MM.YYYY Enter – Call up the date Up or Down - Increase or decrease present digit Right or Left - Select next or previous digit Enter - Confirm 3. Time Adjustment HH.MM (24 H) Enter – Call up the time Up or Down - Increase or decrease present digit Right or Left - Select next or previous digit Enter - Confirm NOTICE! Correct Time Setting: The time setting must match the time on the actual installation site; otherwise data may be overwritten! 4.
5a. Country Settings 5b. Country Settings Enter – The question “Change country settings?” appears on the screen Left or Right – Select CANCEL or OK Enter – Confirm Enter - Call up the list of countries Up or Down - Select the country of the actual installation site Enter – Confirm NOTICE! Change Country Settings: An installation timer ensures that the country settings can be changed within the initial 5 hours of feeding power into the grid after installation.
7. Customer Name Enter – Call up the keyboard The keyboard enables the typing of a customer name. Keyboard In some of the submenus the settings must be typed by using the function keys: Letter keyboard Number keyboard Table 5.2.
8. Site Enter – Call up the keyboard The keyboard enables the typing of a site name. 9. Message 1 Enter – Call up the keyboard This message field is to help distinguish and identify specific inverters in a larger PV plant, or for any other information. 10. Message 2 Enter – Call up the keyboard This message field is to help distinguish and identify specific inverters in a larger PV plant, or for any other information. 44 User Manual THEIA HE-t String Inverters 357115.013, Issue 1.
11. Owner Password Enter – Call up the digits Default: 0003. Change the password to 4 optional digits NOTICE! This password is not transmitted to other inverters on the CAN bus NOTICE! With several inverters connected it must be checked that the installation is carried out on all the slave inverters. • Look at the displayed menu and the LEDs: It is not carried out correctly if the installation menu is still displayed and/or the yellow and red LEDs are lit.
5.3. Self Test for Italy The Self Test function is only valid for Italy. It tests the inverters’ grid monitoring function of voltage and frequency. The inverter carries out four test sequences, which together takes approximately 2 minutes. The self-test changes the trip values for the voltage and frequency to the current grid levels to determine: • Whether the threshold equals the actual measured grid values. • Whether the inverter is triggered to disconnect from the grid by these limits.
Voltage Monitoring First, the overvoltage monitoring is checked. The voltage trip level is ramped down from the maximum allowed voltage level, 276 VAC, and decreased until it equals the current grid voltage. The time it takes from equalization of the voltage to when the inverter disconnects from the grid is measured. If the sequence is successfully carried out, PASS appears. If FAIL appears, start the test again later.
Frequency Monitoring The inverter repeats the test sequence but with the frequency trip limits. First, the upper frequency trip level is ramped down from the maximum allowed frequency level, 50.3 Hz, and decreased until it equals the current grid frequency. The time it takes from equalization to disconnection is measured.
6. Operation This chapter describes how to operate the inverter via the LCD display and function keys, or with a PC connected to the embedded webserver. 6.1. LED There are three LEDs next to the display screen. The upper one is red, the middle is yellow and the lower one is green. Table 6.1.1: LEDs.
Access Levels and Passwords There are three access levels to the different submenus: Guest Owner Installer Read all values. Read all values and set all values except grid settings and other installer related values. Default Owner password is 0003, but can be changed in Setup>General Setup>Password. If the password is lost or forgotten, contact Eltek Valere. Read and set all values. The Installer password is based on the serial number; and can only be obtained by contacting Eltek Valere.
Upper Section The left block shows the status of the inverter (See Table 6.2), and is a shortcut to any Active Alarms. The middle block shows the operation mode of the inverter (See Table 6.2). The right block shows the serial number of the inverter, which is also to be found on the product label. Table 6.2.
6.2.2. Status Displays the operating status and mode of the inverter and the PV plant. Up or Down – Navigate through the submenus/values Enter – Select submenu/value NOTICE! Plant Status is reserved for future firmware upgrade functions, and is not yet accessible. Active Alarms Displays more detailed information about the warnings and alarms shown in the upper left corner of the Home screen (See 7.2. Table of Events).
6.2.3. Setup Displays settings and data from the inverter, the grid and the PV plant. Up or Down - Navigate through the settings Enter – Select value/confirm NOTICE! Plant Status is reserved for future firmware upgrade functions, and is not yet accessible. General Setup Displays some of the general parameters of the inverter, which can all be changed using the Owner password.
Inverter Setup Displays the various data for the specific inverter. This information is set during the manufacturer process. The information is used by service and maintenance personnel.
Change the Country Settings • From the Main Menu: Select Setup > Grid Setup > Country. • Enter - Confirm. • After 5 hours of feeding in power to the grid after installation the Installer password must be used to change the country settings. The Installer password is avaialable for installers and grid operators only by contacting Eltek Valere. • The question “Change country settings?” appears in the display.
6.2.4. Commands Up or Down - Navigate through the list Enter - Select an option/confirm Inverter Commands Displays events saved in the inverter data logger, which can be deleted using the Owner password to provide storage for more information.
6.2.5. Alarm Setup Setup menu for sending information regarding production, alarms/warnings and operation mode on email. Notification Setup Displays the settings for remote monitoring of notifications and alarms. Includes settings for the mail server, the sender and the email-receiver details. User Name Password Sender email address Receiver email 1 Receiver email 2 SMPT server Mail user name Digits, letters and symbols making up the user password for the mail server.
6.2.6. Event Log Displays information about events that the inverter has logged. The events are listed with the most recent event first. Warning On means that a warning event has occurred. Warning Off means that an event has cleared. 6.2.7. Statistics Displays values for the daily, monthly, yearly and total energy harvest, earnings, CO2 savings and peak power.
6.3. Connection between Inverter and Computer The site performance can be checked remotely by using a computer. The connection can be achieved between between the inverter and the computer either directly or via a network. 6.3.1. Without Network To connect the inverter and the computer directly a regular CAT5 Ethernet cable is needed. If the network card in the computer does not support Autosense, a crossover cable is needed to create a connection to the inverter. 1. Slave inverter 2. Master inverter 3.
6.3.2. With Network If a network is present, the availability of DHCP (Dynamic Host Configuration Protocol) determines the configuration between the inverter and the computer. With DCHP, normally a router or a switch distributes the needed parameters (IP address and Subnet Mask) for devices to operate in the network. 1. Slave inverter 2. Master inverter 3. CAN 4. Ethernet 5. Router/Switch 6. World Wide Web 7. PC Figure 6.3.
address assigned to the HE-t. With this completed it should now be possible to reach the HE-t webserver by typing in the external IP address of the local network. • The external IP address of the local network can be found by visiting http://www.whatismyip.com. NOTICE! If the local network is assigned a dynamic IP address from their Internet Service Provider (ISP) the external IP address is unlikely to remain constant over a long time period.
7. Troubleshooting This chapter contains useful information if the inverter malfunctions during start-up or operation. Start by checking that the installation is carried out correctly, and then check the information in 7.2. Table of Events for possible solutions. If this does not help solve the problem, please contact the system installer. 7.1.
Grid fault (W/A) No detection of the grid, not able to synchronize with the grid or fault within the countrysettings GUI fault (W/A) Display is not responding High voltage on input side (A) Low voltage on input side (A) DC voltage threshold of 600 VDC is exceeded DC voltage is too low to operate the inverter Low PV isolation resistance (A) PV isolation resistance is below permitted level Failure on DC side (W/A) Inverter failure on the DC side Failure on AC side (W/A) Inverter failure on the AC s
Low inverter temperature(W/A) Current / power limitation (W/A) Low internal inverter temperature PV power exceeds inverter rating Communication failure (A) Internal communication failure Fan failure (W/A) Internal air circulation has failed One or more fuses or circuit breakers are blown Fuse fault (A) Active power limitation (W/A) Reactive power compensation (W/A) Microprocessor fault (W/A) Ground current trip (A) High AC voltage (A) 64 this User Manual and the inverter is shielded from direct sun
Low AC voltage (A) High frequency on output side (W/A) Low frequency on output side (W/A) High output DC current (W/A) Output current imbalance (W) Grid fault, still running (W) VDR fault DC side - The inverter will restart when the voltage is within the permissible range - Check that the country settings have been successfully set in Setup > Grid Setup - If the failure persists, contact the system installer The frequency of the - The inverter tries to restart when utility voltage is above the the freq
8. Maintenance This chapter explains how to switch OFF and discharge the inverter safely. It also provides an overview of important regular maintenance procedures to ensure trouble-free operation of the THEIA HE-t inverters. Finally, it is explained how to remove and return the inverters. 8.1. Switch-Off Always turn OFF and disconnect the inverter in the following order prior to maintenance work or repairs: AC Side • Turn OFF the AC circuit breaker(s). DC Side • Turn OFF the DC switch.
8.1.1. Discharge High voltages are still present inside the inverter after the DC switch is switched OFF. For service or maintenance the inverter must be de-energized for either 1 hour, or for at least 10 seconds using an external resistance to quickly discharge the capacitor bank. Prior to the discharge, the inverter upper cover must be removed by loosening the four screws on the back of the inverter.
8.2. Regular System Inspections The THEIA HE-t inverters are manufactured to operate trouble-free for several years. Performing regular maintenance will ensure high efficiency and a long service life. CAUTION: Only qualified persons to perform work inside the inverter! Maintenance work involving removal of the inverter covers must be performed by qualified persons only, due to damage to electrical components and the warranty of the product. 8.2.1.
8.2.5. DC Fuses If a DC fuse blows, a message will appear in the display (See 7.2. Table of Events). DANGER: Never work with live wires! Always disconnect both the DC and AC side before opening the inverter lower cover, due to the risk of electrocution. DANGER: Be aware of power feeding modules! The PV modules feed power when exposed to light and produce hazardous voltages, which are still present at the terminal blocks and fuse holders after switch OFF.
8.2.8. Fan The fan circulates the air inside the inverter, which distributes heat and thereby maintains the conversion capacity. The replacement of the fan requires removal of the inverter lower cover and must be performed by qualified persons only! • A message is shown in the display when the fan needs replacement (See 7.2. Table of Events).
8.2.9. Ventilation The heat sink on the back of the inverter conducts heat away from the electronic components, and must be clean to ensure sufficient cooling performance and thereby prevent yield losses. This is accomplished by using either: • Vacuum cleaner • Soft brush • Compressed air Figure 8.2.4: Heat sink 8.2.10. Varistors (VDR) Varistors have a finite life expectancy, and therefore need regularly inspections (at least once per year).
AC Side • No alarms are raised regarding the condition of the varistors on the AC side. Therefore, they need to be checked regularly (at least once per year) or after lightning strikes. • Replace the damaged varistor with DC Varistor Kit ordered from Eltek Valere, part number 263574. The three varistors on the AC side are located in the right side of the connection area above the AC terminal area. Note the orientation of the varistors if they need to be replaced. Figure 8.2.
8.3. Replace Devices It is possible to add new inverters, or replace existing inverters, in a PV system. Slave • If the replaced inverter is a slave, the master inverter will automatically identify the replaced device, transfer critical settings, and put it into operation. • The device number is automatically maintained. Master • If the replaced inverter is the master and master functionality is desired, an existing inverter must be set up as master. This is done in Setup>Network Setup>Set as Master unit.
9. Warranty This chapter gives a brief introduction to the valid warranty of the THEIA HE-t inverters. The inverters are compatible with all relevant standards and are guaranteed to be free of defects from the date of purchase. 9.1. Warranty Service The standard warranty applies for 5 years after the date of installation, with an optional extension of up to 20 years. The installation must be completed within 6 months after purchase to maintain the warranty.
10.
User Manual THEIA HE-t String Inverters 357115.013, Issue 1.
11. Contact Information AUSTRALIA Eltek Valere Australia Pty Ltd 22 Narabang Way NSW 2085 Belrose, Australia Phone: +61 2 9479 4200 Fax: +61 2 9479 4292 Email: sales@eltek.com.au JAPAN Eltek Valere Pte Ltd (Japan) Planet Bldg. 6F, 2-1-22, Nishi-Gotanda Shinagawa-Ku, Tokyo 141-0031, Japan Phone: +81 3 6431 9921 Fax: +81 3 6431 9922 Email: jp.renewables@eltekvalere.com CHINA Eltek Valere Energy Technology (Dongguan) Ltd Guancheng S&T Park, Shilong Rd., Guanlong Rd.
www.eltekvalere.
