1.1 About this Manual This manual provides the detailed information of specification, installation procedures and all related function settings about the solar inverter model- RPI-H3/RPI-H5. Installation technicians must be well-trained and qualified for installing solar system and must follow all the safety instructions and installation procedures.
PV Array into single phase alternating current (AC) to feed the excess capacity back to the local main electrical grid. This inverter allows wide voltage input range (125~600Vdc for RPI-H3 and 200~1000Vdc for RPI-H5) and high performance efficiency based on user’s friendly operation design.
Due to variety of users’ installation environment, reading this manual thoroughly before installation is strongly recommended. All the installation and start-up procedures must be undertaken by professional and well-trained technician. 2.2 Unpacking Unpacking process is shown as Figure 2-1. RPI-H3 RPI-H5 Figure 2-1 : Unpacking process...
3. Check if all the accessories are in the package, the standard accessories are list as Table 2-1: RPI-H3 / RPI-H5 Object Description PV Inverter 3kVA(RPI-H3), 5kVA(RPI-H5) solar inverter The Instruction to provide the information of safety, User Manual Installation, specification, etc. AC Plug Connector for AC connection...
Users can identify the model number by the information on the product label. The model number, specifications as well as the series No. is specified on the product label. Regard to the label location, please refer to Figure 2-2, Figure 2-3. RPI-H3 _110 (RPI302N63E0000)
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Installation and Wiring RPI-H5 Figure 2-3 : The identification label for H5...
3.2 Function Introduction Inverter’s exterior objects are shown on the Figure 3-3, and the detailed description is in sections 3.2.1 and 3.2.2. LCD / LED display and buttons RPI-H3 Dry connector & Digital input DC Switch : DC Switch _110...
Installation 3.2.2 Inverter Input/Output Interface RPI-H3 _110 AC connector DC switch Communication Dry connector & Digital input DC connector*2 RS-485*2 RPI-H3 _010 Communication Dry connector & Digital input DC connector*1 RS-485*2 AC connector Stopper (Avoid Physical Impact) RPI-H5 AC connector...
Installation Installation 4.1 Installation Location WARNING! Death and serious injuries may occur. ● Do not install the unit near/on the flammable objects. ● Please mount the unit tightly on the solid/smooth wall. ● In order to ensure the safety of installers, installer shall be at least two people to process the installation.
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Installation Figure 4-1 : Screw the mounting bracket for RPI-H3...
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Installation Figure 4-2 : Screw the mounting bracket for RPI-H5...
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Installation CAUTION ! • The location and hardware should be a solid surface or a firm holder that suitable for the weight of inverter. • Suggested to install the inverter to the location which offers free and safe access. It would streamline the service and maintenance • Please leave an appropriate gap in between when installing singe/ several solar inverter systems.
1. Make sure whether the voltage values, polarities are correct. 2. When grounding of the solar array is necessary, an isolation transformer is required due to the RPI-H3/RPI-H5 not having a galvanic isolation between the DC-input and AC-output. 3. The ground fault detection is a fixed internal setting. It always works and can not be modified.
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Wiring PV Array Distribution box (Plus-GND or Minus-GND) Must install a transformer Isolated transformer Utility Inverter 1Ph, 1Ph, 230Vac 230Vac Figure 5-2 Connection of a system for solar array grounding WARNING! SHOCK HAZARD Whenever a PV array is exposed to sun-light, a shock hazard exists at the output wires or exposed terminals.
The voltage between each phase and the neutral is 230/220 V. The voltage between two phases is 400/380V. Delta configuration (3 phased wires only) : L–L, The voltage between two phases are 230/220V. As there is no neutral, there is no phase-neutral voltage.
Table 5-1 Recommended upstream protection Please use proper wire to connect correct poles (According to the Table 5-2). Current Rating Wire size Torque >20A (RPI-H3), >30 A (RPI-H5) 3-4mm / 12 AWG 0.8~1Nm Table 5-2 AC wire requirement Figure 5-4 AC plug illustration • The AC voltage should be as following.
• The maximum open circuit voltage of the PV Array must not exceed 600V (RPI-H3) / 1000V (RPI-H5). • The recommended PV power connect to inverter is 3600W (RPI-H3) / 5950W (RPI-H5). • The device installed between PV Array and inverter must meet the rating of voltage higher than this device’s maximum input voltage.
Wiring 5.4 Communication Module The Communication Module supports the function of communication with computer, and provides 2 ports of RS-485 .When using this module, the first step is to take off the cover located at the right bottom of inverter and pull out the RS485 socket as shown in Figure 5-6.
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Wiring Data Format : Pin Layout: Baud rate : 19200 Function Data bits :8 DATA- Stop bit :1 RS485 / USB DATA+ Parity :N/A RS485 / RS232 Figure 5-7 Multi-inverter connection illustration RS-485 Data format 9600 / 19200 Baud rate Data bit Stop bit Parity...
Active/Reactive Power Control and LVRT (Optional) 6 Active/Reactive Power Control and LVRT (Optional) There are 2 settings for active power and 4 settings for reactive power control based on the requirement from network operator. 6.1 Active Power Control 6.1.1 Power Limit Users can reduce inverter output power by set percentage of actual or rated power.
Active/Reactive Power Control and LVRT (Optional) Gradient 40% Pm/ Hz Fstart(50,2Hz) Power vs. frequency curve for VDE-AR-N 4105 Pimax Gradient 83.3% Pimax / Hz Fstart (50,3Hz ) Power vs. frequency curve for CEI-021 Figure 6-1 Power vs. frequency characteristic 6.2 Reactive Power Control With active power output, it must be possible to operate the generating plant in any operating point with at least a reactive power output corresponding to a active factor at the network connection point of...
Active/Reactive Power Control and LVRT (Optional) 6.2.1 Fixed Power Factor cosφ (VDE-AR-N 4105,CEI 0-21) Users can set power factor from Cap 0.8 to Ind 0.8 (inverter would stop reactive power control if output power is below 20% rated power). 6.2.2 cosφ(P) (VDE-AR-N 4105,CEI 0-21) Once user enables this method, inverter will deliver reactive power according to output active power at that moment.
Active/Reactive Power Control and LVRT (Optional) 6.2.4 Reactive Power / Voltage Characteristic Q(U)(CEI 0-21) Once user enables this method, user can set Q vs. Grid voltage operation curve as below. Qmax(48.4%) Qmin(48.4%) Q/Sn TypeA Q/Sn TypeB Figure 6-3 Q(U) characteristic...
Active/Reactive Power Control and LVRT (Optional) 6.3 Low Voltage Ride Through (LVRT) According to CEI 0-21, 8.5.1 To avoid undue separation from the network if voltage dips occur, a generation system with over 6 kW total power must be able to comply with certain functional requirements, which are known as LVRT(Low Voltage Ride Through) in international literature.
Turn PV inverter on/off 7 Turn PV inverter on/off WARNING:BURN HAZARD! The enclosure temperature may exceed over 70°C while operating. Danger may occur owing to hot surface. Please do not touch! After installation, please confirm the AC, DC, and Communication connection are correct.
Turn PV inverter on/off 7.2 Inverter Setting 7.2.1 Country Setting The first time you startup this device. Country Setting is required. 1. In the country setting page, press “SEL” button (NEXT) to select your located country, press “ENT” button to confirm this page. 2.
Turn PV inverter on/off 7.2.2 AC Configuration Setting 1. Turn on DC power and wait for the LCD display is ready, then press “SEL” button until “Country XXX" is displayed. 2. Press and hold both “SEL” and “ENT” buttons for 10 seconds until “Language XXXXXX”...
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Turn PV inverter on/off Install Settings Start Install Settings Inverter shut down Language xxxxxx xxxxxx xxxxxx Next Enter xxxxxx Next Enter Exit Country xxxxxx xxxxxx xxxxxx Next Enter Country is Empty ( default ) ? xxxxxx Next Enter Exit ? AC Configurat.
Turn PV inverter on/off 7.2.3 Connecting the Communication Wiring Multiple inverters could be monitored via RS-485 connection (Figure 5-7), but each inverter’s ID must be set. NOTE Make sure the inverter ID is different from each other in the same train. Single inverter could be monitored RS-485 connection.
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Turn PV inverter on/off Output 3600 W Page1 Today output energy PAGE 1 Today 7200 Wh Utility Page2 Grid voltage and frequency PAGE 2 225 V 60 . 00 Hz Output Current Page3 Output current PAGE 3 16 . 0 A 320 V Page4 Input voltage, current and power...
Turn PV inverter on/off 7.3.1 Event List When entering this page, the display will show all the events (error or fault) and it can show 16 records at most with the latest one on the top. Event List Enter 01:Grid Freq Under Rating 02:Grid Volt Under Rating...
Turn PV inverter on/off 7.3.4 Insulation Mode (Only useable for RPI-H5) Insulation Mode XXX maybe Normal , Negative, Disable , Positive (SEL and ENT are pressed simultaneously > 30 sec) Normal Normal Next Enter Negative Negative Next Enter Disable Disable Next Enter Positive...
Turn PV inverter on/off 7.3.6 Cosphi Settings (Only useable for RPI-H3) Users can select different Cosphi settings in this page. PF Control Choose from the last setting Cosphi off Cosphi XXXX Next Enter XXXX Default setting: Cosphi off & Reset to “Cosphi off”after Country chage Cosphi Ind 0 .
The final testing result will be shown on the operating page and saved, user can review the results. If the Italy Self-test failed, this PV inverter would not operate anymore. Please contact with Delta or your supplier of this PV inverter. Figure 7-12...
Maintenance 8 Maintenance In order to ensure the normal operation of PV Inverter, please check up regularly at least once each year or each half year. Check all the terminals, screws, cables are connected well. If there are any impaired parts, please contact with the qualified technician to repair or replace to the new spare part.
Measurement, Error Message and Trouble Shooting 9 Measurement, Error Message and Trouble Shooting 9.1 Measurement Output 3600W Utility Today 7200Wh 225V 60.00Hz Output Current DC: 320V 16.0A 5.9A 1894W Today DC AC Life Energy 3600 Wh 1234 kWh DC Life Energy 617 kWh Measurement Meaning...
Measurement, Error Message and Trouble Shooting 9.2 Error Message & Trouble Shooting ERROR Message Possible cause Action 1. Check the utility frequency on 1. Actual utility frequency is over the inverter terminal E01: Grid Freq. the OFR setting 2. Check country setting Over Rating 2.
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3. Detection circuit malfunction the inverter 1. Modify the solar array setting, 1. Actual Solar1 voltage is over and make the Voc less than E30: DC Volt 600Vdc (RPI-H3) or 600Vdc (RPI-H3) or Over Rating 1000Vdc (RPI-H5) 1000Vdc (RPI-H5) 2. Detection circuit malfunction 2.
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Measurement, Error Message and Trouble Shooting FAULT Message Possible cause Action 1. Check the utility waveform. Grid connection of inverter need A01: DC Offset 1. Utility waveform is abnormal to be far away from non-linear Over Rating 2. Detection circuit malfunction load if necessary 2.
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Measurement, Error Message and Trouble Shooting FAULT Message Possible cause Action 1. Check the accuracy of current A20: Efficiency 1. The calibration is incorrect and power Inconsistent 2. Current feedback circuit is defective 2. Check the current feedback circuit inside the inverter 1.
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1. Driver for boost is defective 2. Modify the solar array setting, 2. Voc of PV array is over and make the Voc less than A31: Bus_P Over 600Vdc (RPI-H3) or 600Vdc (RPI-H3) or Volt Rating 1000Vdc (RPI-H5) 1000Vdc (RPI-H5) 3.
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Measurement, Error Message and Trouble Shooting FAULT Message Possible cause Action 1. Check the connection of WB1 1. WB1 WB2 misconnection. and WB2. A45: HW OOCP 2. Detection circuit malfunction 2. Check the detection circuit inside the inverter Check the detection circuit for A50:Zero Cross The detection circuit for synchronous signal inside the...
De-Commissioning 10 De-Commissioning De-Commissioning Procedure: If it is necessary to put the device out of operation for RMA or maintenance, please follow the instructions below. WARNING!Death and serious injuries may occur. To avoid injuries, please follow the procedures below, 1. Switch off AC circuit breaker to disconnect with electricity grid. 2.
Technical Data 11 Technical Data 11.1 Specifications Model RPI-H3 RPI-H5 GENERAL Enclosure Powder-coated aluminium Operating temperature -20~60°C, full power up to 40°C Operating Altitude 2000m Relative humidity 0% – 95% non-condensing. Environmental category Outdoor, wet locations Galvanic isolation Safety class...
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Technical Data Model RPI-H3 RPI-H5 AC OUTPUT (Grid side) Output connection IP 67 single-phase Fuse Internal fuse, 20 A/250 V*1 Internal fuse, 20 A/250 V*2 MECHANISM Housing Aluminum Extrude Cooling Natural cooling IP rating IP65 (Electronics) External communication 2 RS-485 connection...
Appendix A Appendix A Multi-function Relay Inverter support one multi-function relay, the multi-function relay is available to external devices. The device includes: flashing lights, Buzzer Etc. the multi-function relay allow following configuration. • Fault indicator or Grid status indicator • Power production • Control of external loads • Fan control...
Appendix A A.1 Multi-function relay output connection The Dry contact connection provides a remote indication of inverter status. When inverter operated in the normal condition, the dry contact is closed. User can use the Monitor modbus SW tool, the multi-function relay will be configured as mentioned event setting. Please refer to Figure A-1 Dry contact Equivalent circuit...
Appendix B Appendix B Digital Input To implementation of power management, the digital input interface receives the specifications of the network operator via a ripple control receiver. • Germany : The active power limitation in the stages 0%, 30%, 60% and 100% • Italy ...
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Appendix B Function Digital input 1 Digital input 2 Digital input 3 Digital input 4 Digital input 5 Output Country = Italy & Italy with SPI Function Output No function Remote off Narrow frequency limit. Note: 1 = Relay is closed, 0 = Relay is open. Country = Germany Function Output...