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TRM025KTL
User Manual
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Trannergy TRM025KTL, TRM030KTL, TRM035KTL, TRM033KTL User Manual

User Manual
TRM025KTL/TRM030KTL/TRM033KTL/TRM035KTL
User Manual 1
Contents
1.1. Introduction ....................................................................................................................................................... 4
1.2. How to Use this manual ..................................................................................................................................... 4
1.3. Applied Designations (Warning, Caution, Note)............................................................................................... 4
1.4. Important Safety Information ............................................................................................................................ 4
1.5. General Safety Rules for Working on Electrical Equipment ............................................................................. 5
1.6. System Sizing .................................................................................................................................................... 6
2.1. Mechanical design ............................................................................................................................................. 7
2.2. Electrical system design .................................................................................................................................... 8
2.3. The illustration of derating and limit the input power ....................................................................................... 8
3.1. Wait mode.......................................................................................................................................................... 9
3.2. Check mode ....................................................................................................................................................... 9
3.3. Normal mode ..................................................................................................................................................... 9
3.4. Fault mode ......................................................................................................................................................... 9
3.5. Flash mode ....................................................................................................................................................... 10
3.6. Shut down ........................................................................................................................................................ 10
4.1. Installation precaution ..................................................................................................................................... 10
4.2. Install steps ...................................................................................................................................................... 11
4.2.1 Install on the wall ...................................................................................................................................... 11
4.2.2 Install on the bracket .................................................................................................................................. 12
4.3. Electrical connection ....................................................................................................................................... 13
4.3.1. Connection to the grid (AC output) .......................................................................................................... 13
4.3.2. Connection to PV generator (DC input) ................................................................................................... 14
4.3.3. Grounding the inverter .............................................................................................................................. 17
4.4. Test run ............................................................................................................................................................ 18
5.1. Control and Display Panel ............................................................................................................................... 19
5.2. LED Display .................................................................................................................................................... 20
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5.3. LCD Display .................................................................................................................................................... 21
5.4. Function Keys .................................................................................................................................................. 23
5.4.1. Configure .................................................................................................................................................. 23
5.4.2. Energy yield .............................................................................................................................................. 26
5.4.3. Inverter state ............................................................................................................................................. 26
5.4.4. Device Information ................................................................................................................................... 27
5.4.5. log Information ......................................................................................................................................... 27
5.5. Display of Fault ............................................................................................................................................... 27
6.1. Communication Interfaces ............................................................................................................................... 28
6.2. Communication ............................................................................................................................................... 28
6.2.1. RS-232 Communication ........................................................................................................................... 28
6.2.2. RS-485/422 Communication .................................................................................................................... 29
6.2.3. WiFi/GPRS/Ethernet Communication ...................................................................................................... 29
6.2.4. USB Communication ................................................................................................................................ 29
6.3. Monitoring System .......................................................................................................................................... 30
7.1 Routine maintenance ........................................................................................................................................ 30
7.2 Notes of maintain or service ............................................................................................................................. 31
7.3 Safety for maintain or service ........................................................................................................................... 31
7.4 Replacing the string fuses ................................................................................................................................. 31
9.1. Standard Warranty Period................................................................................................................................ 33
9.2. Extension of Warranty ..................................................................................................................................... 33
9.3. Liability Insurance ........................................................................................................................................... 33
9.4. Warranty Claim Procedure .............................................................................................................................. 33
9.5. Exclusion of Warranty Claims......................................................................................................................... 34
9.6. Service after Warranty Expiration ................................................................................................................... 34
User Manual 3
Copyright Declaration
The copyright of this manual belongs to Trannergy Co., Ltd.. Any corporation or individual should not plagiarize, partially copy or fully copy it (including software, etc.), and no reproduction or distribution of it in any form or by any means. All rights reserved. Trannergy reserves the right of final interpretation.
This manual is subject to change according to user’s or customer’s feedback. Please check latest version
at: http://www.trannergy.com.
4 User Manual
1. Introduction
1.1. Introduction
This manual describes Trannergy solar inverters TRM025KTL/030KTL/ 033KTL/035KTL. These products are among the most technologically advanced and efficient inverters on the market and are designed to ensure a stable power supply for many years.
The TRM inverter is a transformerless based inverter.
1.2. How to Use this manual
Please read the safety instructions in this manual first. Throughout the manual it is assumed that the reader is familiar with AC and DC installations and knows the rules and regulations for electrical equipment and for connecting it to the utility AC grid. It is especially important to be familiar with the general safety rules for working with electrical equipment.
1.3. Applied Designations (Warning, Caution, Note)
Throughout the manual important information is shown at different levels depending on the character of the information, as shown here:
Safety information important for human safety. Violation of warnings may result in injury to persons or death.
Information important for the protection of property. Violation of this type of information may cause damage and loss of property.
Useful additional information or “Tips and Tricks" on specific subjects.
1.4. Important Safety Information
Read this before installing, operating or maintaining the inverter.
Before installation:
Check for damage to inverter and packaging. If you are in doubt, please contact your supplier before installing the inverter. Check the voltages of the solar modules and make sure they are within the limits of the Trannergy inverter specifications before connecting them to the inverter.
Installation:
Only trained and authorized personnel familiar with local electrical codes may install the inverter. For optimum safety, please follow the steps described in this manual. Keep in mind that the inverter has two voltage carrying sides, the PV input and the AC grid.
Disconnecting the inverter:
Always disconnect the AC line first! Afterwards disconnect the PV lines. Note that the inverter can still be charged with very high voltages at hazardous levels even when it is
User Manual 5
disconnected from grid/mains and solar modules. Wait at least 20 min. before proceeding, after having disconnected from grid and PV panels.
operating the inverter:
Before connecting the AC grid to the inverter, make sure that the installation cover is mounted again. The inverter must not be open during operation.
Maintenance and modification:
Only authorized personnel are allowed to repair or modify the inverter. To ensure optimum safety for user and environment, only the original spare parts available from your supplier should be used.
Functional safety parameters:
Unauthorized changes of functional safety parameters may cause injury or accidents to people or inverter. Additionally it will lead to the cancelling of all inverter operating approval certificates. The Trannergy inverters in the TRM range are all designed according to international safety requirements.
If non-original spare parts are used, the compliance with CE guidelines in respect of electrical safety, EMC and machine safety is not guaranteed.
1.5. General Safety Rules for Working on Electrical Equipment
All persons installing, maintaining or servicing inverters should be trained in and have experience with the general safety rules to be observed when working on electrical equipment.
Installation and service personnel should also be familiar with local requirements, rules and regulations as well as safety requirements.
To provide a general guideline for safety precautions, five well-known and widely accepted rules are repeated below. The list should by no means be considered as exhaustive.
The person performing work on electrical equipment is responsible for the safety of persons and property!
Disconnecting
Disconnect all cables supplying voltage to the working place before starting any work. Please note that a lack of voltage is no guarantee that disconnection has been performed.
Protecting against reconnection
Prevent the system from reconnecting by marking, closing or locking off the work area. Unintentional reconnection may result in severe accidents.
Checking that system is voltage free
Ascertain conclusively by means of a voltage tester that the system is voltage free. Check all terminals to ensure that the system is voltage free (on each individual conductor).
Covering adjacent voltage-carrying components and preventing persons from gaining access to them
Cover up all voltage-carrying system components that can harm you while working. Make sure that danger areas are clearly marked.
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1.6. System Sizing
When dimensioning a photovoltaic system, it must be ensured that the open circuit voltage of the PV string never exceeds the maximum permissible input voltage of 1000V DC. The PV string open circuit voltage during parallel string operation is 910V. Higher voltages may result in permanent damage to the inverter.
The selection of PV string output should be based on the optimum utilization of the invested capital compared to the expected annual energy yield from the system. This optimization depends on local weather conditions and should be considered in each individual case.
The inverter incorporates an input power limiting device, which automatically keeps the power at levels that are safe for the inverter. The limitation depends mainly on internal and ambient temperatures. The limitation is calculated continuously and always allows the maximum possible amount of energy to be produced.
Please use the tool supplied by Trannergy when dimensioning a photovoltaic system.
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2. Technical Description of Inverters
2.1. Mechanical design
Figure 2-1 shows the outline dimensions of TRM025KTL/030KTL/033KTL /035KTL:
780
590
230
Figure 2-1 Outline dimensions of TRM025KTL/030KTL/033KTL/035KTL
The DC switch is the most length part at the left of inverter, so take care of the DC switch terminal.
Figure 2-2 shows the electrical terminals of TRM Series Inverter:
DC SWITCH
DC INPUT TERMINALS COMMUNICATION TERMINALS
AC OUTPUT TERMINALS
Figure 2-2 Electrical Terminals of TRM Series Inverter
For safety reasons, the use of a DC switch is recommended. Between the PV modules and the power modules may be mandatory in some countries.
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2.2. Electrical system design
Figure 2-3 wiring diagram of the whole TRM inverter system
Please refer to chapter 4 for the detail connecting and install methods.
2.3. The illustration of derating and limit the input power
To avoid inverter to be damaged by over temperature or over current. Not output power when the temperature of power devices is over 100℃ or the ambient
temperature is over 75℃.
Derate the output power linearly when the temperature of power devices is between 93-100℃ or
the ambient temperature is between 71-75℃.
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3. Operation mode illustration of the inverter
TRM inverter has five operation modes during the whole work process; they are wait, check, normal, fault and flash modes. Its detail illustration is shown by Figure 3-1 below.
Shut Down
Wait Mode
Fault Mode
Flash Mode Normal Mode
Check Mode
Default:
Unrecoverable
Fault
Flash Event
Satisfy the power on condition
Have warning code
Flash Event
Flash Event
Flash Event
Check no errors
Have Fault event
Have warning events
or power off cmd
Have Fault event
Have Fault event
Recoberable fault cleared in
5s
Vpv<200Vdc
Vpv<200Vdc
Figure 3-1 State Machine of Inverter working mode
3.1. Wait mode
When the input power by solar panel is not enough to let the power module work, it is at waiting mode. The inverter will wait until the input voltage is above 300Vdc and below 910Vdc, it turn to check mode.
3.2. Check mode
When the inverter is power on, it will check isolation, HCT device, GFCI device, relay, fan, and soft start automatically in order. This can guarantee the inverter work normally and turn to normal operation mode.
3.3. Normal mode
When the conditions above are satisfied, inverter will let the BOOST and inverter module work and turn to normal generating power mode. It will change the solar energy into electrical energy and fed it into grid based on advanced MPPT technology in order to absorb solar energy in maximum extent possible. It will also calculate the generated energy per day/per month/per year automatically, save the number in EEPROM and the number can be read from the HMI.
3.4. Fault mode
When there are fault during the inverter running, it will stop generating power and turn to fault mode and display the fault information on LCD. Before do this, it will store the generated power number into EEPROM automatically. Many not very serious fault will be cleared after 5s automatically and
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retry to run. If the serious fault generated, it will stay in the fault mode until the technical staff to solve the problem.
3.5. Flash mode
Regardless the inverter running in which mode above, when there is the flash command, it will turn into flash mode and rewrite the firmware in DSP flash.
3.6. Shut down
When the PV input voltage less than 200Vdc, the PV panel can’t provide energy enough, so the inverter shut down automatically. When next day come, with the irradiance increasing, it will run again smoothly if there are no fault occurrence.
4. Installation and startup
4.1. Installation precaution
Warning！
Before installation and maintenance, AC and DC side doesn’t carry electricity, but if
DC side is just disconnected, capacitance still contains electricity, so please wait for at least 15 minutes to ensure the capacitors completely release the energy and inverter is not electrified.
Note！ Inverters must be installed by qualified person.
Trannergy assures the product guarantee of the TRM series inverters during five years after your purchase, if the installation site does not meet the instructions described in this manual, it is out of warranty. The warranty is limited to the costs of repair and/or replacement of the product by Trannergy only.
Ventilation is very important to cool the inverter. For outdoors application, the inverter requires at least 500mm of clearance among the other units and 300mm of the ground or the roof. See Figure 4-1:
300mm
500mm
500mm
300mm
Figure 4-1 Distance required of Invertors
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4.2. Install steps
4.2.1 Install on the wall
Setp1: Drill Fix Ø14 holes in the wall according to the dimensions shows in Figure 4-2:
5XΦ14,65-70mm,Deep
320
482
160
241
Figure 4-2 Dimensions of drilling holes
Note！
Keep drilling vertical to the wall, and don’t shake when drilling to avoid damage to
the wall. It need repositioning and drilling holes if the hole with much error.
Step2: Put the expansion pipe showing in Figure 4-3 into the hole vertically, use hammer to tap the pipe into the wall completely.
Figure 4-3 Expansion tube
Step3: Put the mounting panel on the wall and twist the M10 screws into the expansion tube to fix the mounting panel.
Figure 4-4 Install the mounting panel
Setp4: Hung the inverter on to the mounting panel:
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