Delta RPI H3A User Manual
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Delta RPI H3A User Manual

Grid-tie transfomerless solar inverter
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Summary of Contents for Delta RPI H3A

  • Page 3: Table Of Contents

    Table of Contents General Information ............1 1.1 Scope of delivery ................1 1.2 General Warnings / Notes on Safety ..........1 1.3 Validity ....................2 1.4 Product Description ................2 1.5 How it Works ..................3 1.6 Additional Information ................ 3 Installation and Wiring ............
  • Page 4 6.3 Low Voltage Ride Through (LVRT) ........... 22 Turn PV inverteron/off ............23 7.1 Start-up Procedures ................. 23 7.1.1 PV Array DC Voltage Checking ..........23 7.1.2 AC Utility Voltage Checking ............23 7.1.3 Starting up the Inverter ............... 23 7.2 Inverter Setting .................
  • Page 5 Figure 3-3: LCD display and buttons ............8 Figure 3-4: Input/output interface ..10 Figure 4-1: Attaching the mounting bracket for RPI H3A / H4A / H5A ......10 Figure 4-2: Correct and incorrect installation illustration ..........11 Figure 4-3: Adequate installation gap .....
  • Page 6 Table ............... 5 Table 2-1: Packing list ........14 Table 5-1: Recommended upstream protection ............14 Table 5-2: AC wire requirement ........15 Table 5-3: Order Numbers for MC4 connectors ............15 Table 5-4: Minimum cable size ............17 Table 5-5: Definition of RS485 ............

  • Page 7: General Information

    1 General Information 1.1 Scope of delivery Congratulations on the purchase of your Delta RPI H3A / H4A / H5A grid-tied solar inverter. This manual assists you in becoming familiar with this product. Please observe all safety regulations and take into account technical connection conditions required at your local grid utility.

  • Page 8: Validity

    In addition, the special DSP (Digital Signal Processor) design reduces the complexity of the circuit and electronic components. Please note that this device does not support off-grid function. The features for RPI H3A / H4A / H5A are shown below. Features •...

  • Page 9: How It Works

    DC input power supplied from the PV Array into single-phase AC output power to Grid. Figure 1-1: Solar system operation illustration 1.6 Additional Information For more detailed information for RPI H3A/ H4A/ H5A or other related product information, please visit : http://www.deltaww.com.

  • Page 10: Installation And Wiring

    2 Installation and Wiring 2.1 Instruction before Installation Due to the variety of users and installation environments, it is recommended to read this manual thoroughly before installation. Installation of the unit and start-up procedures must be carried out by accredited technicians. 2.2 Unpacking Unpacking process is shown as Figure 2-1.

  • Page 11: Package Inspection

    Check if all the accessories are in the package, the standard accessories are list as Table 2-1: Table 2-1: Packing list RPI H3A / H4A /H5A Object Description PV Inverter...

  • Page 12: Identification Label

    2.4 Identification Label Users can identify the model number by the information on the product label. The model number, serial number and other specifications can be located on the product label. For label location, please refer to Figure 2-2. Figure 2-2: The identification label...

  • Page 13: Product Overview

    3 Product Overview 3.1 Dimensions Figure 3-1: Dimensions of RPI H3A/ H4A/ H5A 3.2 Function Introduction The Inverter’s exterior is shown in Figure 3-2. The description for individual objects can be found in sections 3.2.1 and 3.2.2. Figure 3-2: Inverter exterior objects...

  • Page 14: Lcd Display And Buttons

    3.2.1 LCD Display and Buttons Figure 3-3: LCD display and buttons 3.2.2 Inverter Input/Output Interface Figure 3-4: Input/output interface Note: The DC switch is only presented in the -120 models. Model series -020 does not have the DC switch.

  • Page 15: Installation

    4 Installation 4.1 Installation Location WARNING! Do not install the unit near or on flammable surfaces. Please mount the unit tightly on a solid/smooth surface CAUTION! The unit should not be installed in direct sunlight. 4.2 Mounting This unit is designed to be wall-mounted. Please ensure the installation is perpendicular to the floor and the AC plug located at the base of the unit.

  • Page 16: Figure 4-1: Attaching The Mounting Bracket For Rpi H3A / H4A / H5A

    Figure 4-1: Attaching the mounting bracket for RPI H3A / H4A / H5A Figure 4-2: Correct and incorrect installation illustration...

  • Page 17: Figure 4-3: Adequate Installation Gap

    CAUTION! • The bracket supplied with the unit is specially designed and should be the only mounting device used for the unit. • It is recommended to install the inverter in a suitable location which offers easy and safe access for service and maintenance. •...

  • Page 18: Wiring

    1. Ensure voltage values and polarities are correct. 2. When grounding the solar array, an isolation transformer is required due to the RPI H3A / H4A /H5A not having galvanic isolation between the DC-input and AC-output. 3. The ground fault detection is a fixed internal setting. It cannot be modified.

  • Page 19: Ac Grid Connection: L + N + Pe

    Figure 5-2: Connection of a system for solar array grounding WARNING! SHOCK HAZARD Note: Whenever a PV array is exposed to sunlight, a shock hazard may exist due to output wires or exposed terminals. To reduce the risk of shock during installation, cover the array with an opaque (dark) material and ensure that the Disconnect Device in the inverter is set to OFF before commencing any wiring.

  • Page 20: Required Protective Devices And Cable Cross-Sections

    6.25 kVA Please use appropriate wire to connect poles (According to the Table 5-2). Table 5-2: AC wire requirement Current Rating Wire size Torque >20A (RPI H3A), >25 A (RPI H4A), 3-4mm / 12 AWG 0.8~1Nm >30 A (RPI H5A)

  • Page 21: Dc Connection (From Pv Array)

    The maximum open circuit voltage of the PV Array must not exceed 600Vdc. The maximum recommended input power to the inverter is: 3150W (RPI H3A)/ 4200W (RPI H4A)/ 5250W (RPI H5A). Note: The device installed between the PV Array and inverter must meet the rating of voltage higher than this device’s maximum input voltage.

  • Page 22: Communication Module

    DC wiring polarities are divided into Plus and Minus, which are shown in Figure 5-4. The connection shall conform to the indication marked on inverter. Figure 5-4: DC Wiring illustration 5.4 Communication Module The Communication Module enables communication between the unit and a computer and provides 2 RS-485 ports.

  • Page 23: Figure 5-6: Multi-Inverter Connection Illustration

    Table 5-5: Definition of RS485 FUNCTION DATA+ DATA- DATA+ DATA- Figure 5-6: Multi-inverter connection illustration Table 5-6: RS-485 data format RS-485 Data format Baud rate 9600 / 19200 Data bit Stop bit Parity...

  • Page 24: 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 that can be configured based on the requirement of the local 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.

  • Page 25: Reactive Power Control

    Power vs. frequency curve for VDE-AR-N 4105 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 •...

  • Page 26: Fixed Power Factor Cosφ (Vde-Ar-N 4105,Cei 0-21)

    • fixed power factor cosφ (VDE-AR-N 4105 ,CEI 0-21) • displacement factor/active power characteristic curve cosφ(p) (VDE-AR-N 4105 ,CEI 0-21) • fixed reactive power in Var.(CEI 0-21) • reactive power/voltage characteristic Q(U). (CEI 0-21) 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).

  • Page 27: Figure 6-3: Q(U) Characteristic

    TypeA TypeB Figure 6-3: Q(U) characteristic...

  • Page 28: Low Voltage Ride Through (Lvrt)

    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.

  • Page 29: Turn Pv Inverteron/Off

    7 Turn PV inverteron/off WARNING：BURN HAZARD The internal temperature may exceed over 70°C while operating. To avoid injury,do not touch the surface of the inverter whilst the unit is in operation. After installation, please ensure the AC, the DC and communication connection are correct.

  • Page 30: Inverter Setting

    seconds (for the first time start up, select proper country and language, see “7.3.2 Country Selection & 7.3.3 Language Selection”). 7.2 Inverter Setting 7.2.1 Country Setting Upon first start-up of the device, Country selection is required. In the country setting page, press “SEL” button (NEXT) to select your country, press “ENT”...

  • Page 31: Inverter Id Setting

    7.2.3 Inverter ID Setting Turn on DC power and wait for the LCD display, then press “Select” button until “Inverter ID: XX" is shown in the LCD. Press and hold both buttons (“Enter” first, then “Select”) entering setting ID screen, then release both buttons and set ID by pressing “Select” button, then press “Enter”...

  • Page 32: Figure 7-3: Lcd Flowchart

    O u t p u t 3 6 0 0 W PAGE 1 T o d a y 7 2 0 0 W h U t i l i t y PAGE 2 2 2 5 V 6 0 . 0 0 H z O u t p u t C u r r e n t PAGE 3 1 6 .

  • Page 33: Event List

    Page1 Today output energy Page2 Grid voltage and frequency Page3 Output current Page4 Input voltage, current and power Page5 Today input energy Page6 Total output energy Page7 Total input energy Page8 Start page Page9 Firmware version Page10 Event list Page11 Inverter ID Page12 Country Page13 Language Page14 Insulation / Grounding option...

  • Page 34: Country Selection

    7.3.2 Country Selection Users can select different countries in this menu. Figure 7-5: Country selection Table 7-1: Country list RPI H3A/ H4A/ H5A AU/NZ Italy MV(for RPI H5A only) AU/NZ PL4k6 Portugal AU/NZ PL4k99 Spain (RD661) Belgium Spain RD1699 England (UK G59-2 230)

  • Page 35: Language Selection

    7.3.3 Language Selection When entering this menu, user can set one of five different languages. Figure 7-6: Language selection Table 7-2: Language list RPI H3A/ H4A/ H5A English Italiano Français Español Deutsch...

  • Page 36: Insulation Mode

    7.3.4 Insulation Mode Figure 7-7: Insulation mode 7.3.5 Time Setting Figure 7-8: Time setting...

  • Page 37: Settings Page

    Uac Low, Fac High, or Fac Low separately. The final testing result will be shown on the operating menu and saved where the user can view the results. If the Italy Self-test fail’s, the inverter will not operate. Please contact Delta or your supplier.

  • Page 38: Figure 7-10: Italy Comando Locale

    Figure 7-10: Italy Comando locale...

  • Page 39: Figure 7-11: Italy Self-Test Flowchart

    Figure 7-11: Italy self-test flowchart...

  • Page 40: Maintenance

    8 Maintenance In order to ensure normal operation of the inverter, please check the unit regularly. Check that all terminals, screws and cables are connected and appeared as they did upon installation. If there are any impaired or loose parts, please contact your solar installer.

  • Page 41: Measurementerror Message And Trouble Shooting

    9 MeasurementError Message and Trouble Shooting 9.1 Measurement U t i l i t y O u t p u t 3 6 0 0 W T o d a y 7 2 0 0 W h 2 2 5 V 6 0 .

  • Page 42: Error Message & Trouble Shooting

    9.2 Error Message & Trouble Shooting Table 9-2: Error message ERROR Message Possible cause Action E01: Grid 1. Actual utility frequency is 1. Check the utility frequency on Freq. Over higher than the OFR the inverter terminal Rating setting 2. Check country setting 2.
  • Page 43 ERROR Message Possible cause Action E10: Grid 1. Actual utility voltage is 1. Measure the utility AC voltage Volt Under under the UVR setting to the inverter terminal. Rating 2. Utility voltage is under 2. Check the utility AC voltage the Slow UVR setting connection to the inverter during operation...
  • Page 44 ERROR Message Possible cause Action E28: Slow 1. Actual utility voltage is 1. Check the utility voltage on Under under the UVR setting the inverter terminal Voltage 2. Incorrect country or Grid 2. Check country & Grid setting Range setting 3.
  • Page 45 ERROR Message Possible cause Action A01: DC 1. Utility waveform is 1. Check the utility waveform. Offset abnormal Grid connection of inverter Over 2. Detection circuit need to be away from Rating malfunction non-linear load if necessary 2. Check the detection circuit inside the inverter A05: NTC 1.
  • Page 46 ERROR Message Possible cause Action A17:DSP 1. Auxiliary power circuitry 1. Check the auxiliary circuitry ADC I malfunction inside the inverter Fail 2. Detection circuit 2. Check the detection circuit boost malfunction inside the inverter A18:RED. 1. Auxiliary power circuitry 1.
  • Page 47 ERROR Message Possible cause Action A24: 1. PV array insulation fault 1. Check the insulation of Solar Residual 2. Large PV array inputs Curr Over capacitance between 2. Check the capacitance Rating Plus to Ground or Minus (+ <-> GND & - <-> GND), to Ground must <...
  • Page 48 ERROR Message Possible cause Action A35: Bus Volt 1. Driver for boost is 1. Check the driver circuit for Over defective boost inside the inverter Rating 2. V of PV array is 2. Modify the solar array setting, over550Vdc and make the V less 3.
  • Page 49 ERROR Message Possible cause Action A56:Hardwar HW power rating incorrect Check comm. HW power rating info. Incompati bility A60: 1. Switching device in 1. Check all switching device in DC1Curr boost is defective boost Over 2. Driver for boost is 2.

  • Page 50: De-Commissioning

    10 De-Commissioning De-Commissioning Procedure: If necessary to put the device out of operation for maintenance and/or storage, please follow the instructions below. WARNING! To avoid injuries, please follow the procedures • Switch off AC circuit breaker to disconnect from electricity grid. •...

  • Page 51: Technical Data

    11 Technical Data 11.1 Specifications Table 11-1: Specifications Model RPI H3A RPI H4A RPI H5A GENERAL Enclosure Powder-coated aluminium Operating temperature -25~60°C, full power up to 40°C Relative humidity 0% – 95% non-condensing. Galvanic isolation No (TL Topology) Safety class...
  • Page 52 Model RPI H3A RPI H4A RPI H5A Maximum output over current protection AC OUTPUT (Grid side) Current (inrush) (A, peak 30A peak, 1ms. and duration) Frequency 50/60Hz Total harmonic distortion <3% @ Rated power(#1) Power factor >0.99@Rated power(#1) Peak efficiency 97.50%...

  • Page 53: Multi-Function Relay Output Connection

    Appendix A Multi-function Relay The Inverter supports one multi-function relay, the multi-function relay is available to external devices. External devices can be: flashing lights, Buzzer Etc. the multi-function relay allows following configuration: • Fault indicator or Grid status indicator • Power production •...

  • Page 54: Appendix B

    Appendix B Digital input To implement 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 : Power output of Max 6KW for PV plant installation.
  • Page 55 Function Digital input 1 Digital input 2 Digital input 3 Digital input 4 Output 1 Output 2 Country =Italy LV/SPI Function Output 1 Output 2 No function Remote off Narrow frequency limit. #1: Relay is closed, 0: Relay is open. Country = Germany Function Output 1...

This manual is also suitable for:

Rpi h4aRpi h5a

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