opti-solar Sp4000 Premium User Manual
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opti-solar Sp4000 Premium User Manual

Hybrid pv inverter
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User Manual
Sp4000 Premium
Hybrid PV Inverter User manual
Version: 1.2

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  • Page 1 User Manual Sp4000 Premium Hybrid PV Inverter User manual Version: 1.2...

  • Page 2: Table Of Contents

    Table of Contents 1. Introduction ................ 1 2. Important Safety Warning ............ 2 3. Unpacking & Overview............4 4. Installation ................. 5 4. Grid (Utility) Connection ............7 6. PV Module (DC) Connection ..........9 7. Battery Connection ............12 8.

  • Page 3: Introduction

    1. Introduction This hybrid PV inverter can provide power to connected loads by utilizing PV power, utility power and battery power. Hybrid inverter Distribution Box PV module Electric grids Load Battery Figure 1: Basic hybrid PV System Overview Depending on different power situations, this hybrid inverter is designed to generate continuous power from PV solar modules (solar panels), battery, and the utility.

  • Page 4: Important Safety Warning

    2. Important Safety Warning Before using the inverter, please read all instructions and cautionary markings on the unit and this manual. Store the manual in a place where it can be accessed to easily. This manual is for qualified personnel. The tasks described in this manual should be performed by qualified personnel only.
  • Page 5 CAUTION! Under environment of high temperature, the cover of this inverter could be hot enough to cause skin burns if accidentally touched. Ensure that this inverter is away from normal traffic flow. CAUTION! Use only recommended accessories from installer. Otherwise, not-qualified tools may cause a risk of fire, electric shock, or injury to persons.

  • Page 6: Unpacking & Overview

    3. Unpacking & Overview 3-1. Packing List Before installation, please inspect the unit. Be sure that nothing inside the package is damaged. You should have received the following items inside the package: Inverter unit PV connectors EMS port Software CD Manual USB cable 3-2.

  • Page 7: Installation

    4. Installation 4-1. Selecting Mounting Location Consider the following points before selecting where to install: Do not mount the inverter on flammable construction materials. Mount on a solid surface This inverter can make noises which may be a nuisance in a living area during operation.
  • Page 8 1. Drill four holes in the marked Place the unit on the surface and align locations with four screws. the mounting holes with the four screws. 3. Check if the solar inverter is firmly Note: Recommended specs for screws. secured.

  • Page 9: Grid (Utility) Connection

    5. Grid (Utility) Connection 5-1. Preparation Before connecting to AC utility, please install a separate AC circuit breaker between inverter and AC utility. This will ensure the inverter can be securely disconnected during maintenance and fully protected from over current of AC input. NOTE1: Although this inverter is equipped with 250VAC/40A fuse, it’s still necessary to install a separate circuit breaker for safety consideration.
  • Page 10 5-3. Connecting to the Generator Step 1: Check the generator voltage and frequency with an AC voltmeter. It should be the same to “VAC” value on the product label. Step 2: Turn off the circuit breaker. Step 3: Remove insulation sleeve of the three conductors 10 mm away and shorten phase L and neutral conductor N to Chart 1...

  • Page 11: Pv Module (Dc) Connection

    6. PV Module (DC) Connection CAUTION: Before connecting to PV modules, please separately install a DC circuit breaker between inverter and PV modules. NOTE1: Please use 1000VDC/10A circuit breaker. NOTE2: The overvoltage category of the PV input is II. Please follow the steps below to implement PV module connection: WARNING: Because this inverter is non-isolated, only three types of PV modules are acceptable: single crystalline and poly crystalline with class A-rated and CIGS modules.
  • Page 12 Crimping tool and spanner Cable preparation and connector assembly process: Strip one cable for 8 mm on both ends and be careful NOT to nick conductors. Please refer to the diagram on the right. Insert striped cable into female terminal and crimp female terminal as shown below.
  • Page 13 negative pole (-) of PV input connector. WARNING! It's very important for system safety and efficient operation to use appropriate cable for PV module connection. To reduce risk of injury, please use the proper cable size recommended below. Conductor cross-section (mm AWG no.

  • Page 14: Battery Connection

    7. Battery Connection CAUTION: Before connecting to batteries, please separately install a DC circuit breaker between inverter and batteries. NOTE1: Please only use sealed lead acid battery, vented and Gel battery. Please check its maximum charging voltage and current when using this inverter for the first time.

  • Page 15: Load (Ac Output) Connection

    8. Load (AC Output) Connection CAUTION: To prevent from further supply to the load via the inverter during any mode of operation, an additional disconnected device should be placed on in the building wiring installation. WARNING! It's very important for system safety and efficient operation to use appropriate cable for AC connection.
  • Page 16 Software Setting Please set up mains output in parameter setting after installing the bundled software. When “Emergency power supply control” is enabled and inverter is working in battery mode, it will cut off AC output and remain energy through EMS port when battery voltage drops down to the setting value in “Battery voltage to cut-off mains output in battery mode”.

  • Page 17: Ems Connection

    9. EMS Connection This port is available to provide a power source (230V/5A) for emergent light and load. 9-1 Interface Configuration Although there are four pins on this port, only Pin 1 (Line) and Pin 4 (Neutral) are worktable. Please use supplied cables to connect Pin 1 and Pin 4 as shown below. 9-2.

  • Page 18: Communication

    11. Communication The inverter is built in several communication ports and also a slot for alternative communication interfaces in order to connect it with a PC for installing corresponding software. This intelligent slot is suitable to install the software with SNMP card and Modbus card.

  • Page 19: Dry Contact Signal

    Dry Contact Signal There is one dry contact available on the bottom panel. It could be used to remotely control the external generator. 12-1. Electric Parameter Parameter Symbol Max. Unit Relay DC voltage Relay DC current Note: The application of the dry contact should not exceed the electric parameter shown above.
  • Page 20 You can set the related parameters in software. Refer to the diagram below:...

  • Page 21: Application With Energy Meter

    Application with Energy Meter With Modbus card II and energy meter, hybrid inverter can be easily integrated into the existing household system. For details please refer to Modbus card II manual. Note: this application is only valid for Grid-Tie with Backup II mode. Equipped with Modbus card II, hybrid inverter is connected to energy meter with RS485 communication port.

  • Page 22: Commissioning

    Commissioning Step 1: Check the following requirements before commissioning: Ensure the inverter is firmly secured. Check if the open circuit DC voltage of PV module meets the requirement. (Refer to Section 6) Check if the open circuit utility voltage of the utility is approximately same to the expected nominal value set by local utility company.

  • Page 23: Initial Setup

    Initial Setup Before operating the inverter, it’s required to set up “Operation Mode” via software. Please strictly follow the steps below to set up. For more details, please check software manual. Step 1: After turning on the inverter and installing the software, please click “Open Monitor”...
  • Page 24 SECTION A: Standard: It will list local grid standard. It’s requested to enter factory password to make any modifications. Please check local dealer only when this standard change is requested. CAUTION: Wrong setting could cause the unit damage or not working. Nominal Output Voltage: 230V.
  • Page 25 Allow battery to discharge when PV is available: This option is automatically determined by setting in “Load supply source (PV is available)”. When “Battery” is much prior to “Grid” in Load supply source (PV is available), this option is default selected. Under Grid-tie, this option is invalid. Allow battery to discharge when PV is unavailable: This option is automatically determined by setting in “Load supply source (PV is unavailable)”.
  • Page 26 If battery is not fully charged, PV power will charge battery first. And remaining PV power will provide power to the load. If it’s not sufficient, grid will provide power to the load. If grid is not available at the same time, battery power will back up.
  • Page 27 Load supply source: When PV power is available: 1. 1 PV, 2 Battery, 3 Grid PV power will provide power to the load first. If not sufficient, battery power will provide power to the load. When battery power is running out or not available, grid will back up the load.
  • Page 28 Battery charging source: 1. PV and Grid: It’s allowed to charge battery from PV power first. If not sufficient, grid will charge battery. 2. PV only: It only allows PV power to charge battery. 3. None: It is not allowed to charge battery no matter it’s from PV power or grid. Load supply source: When PV power is available: 1.
  • Page 29 Working logic under peak time: PV energy supply priority: 1 Load, 2 Battery and 3 Grid PV power will provide power to the load first. If PV power is sufficient, it will charge battery next. If there is remaining PV power left, it will feed-in to the grid.
  • Page 30 Off-Grid Off-Grid (I): Default setting for off-grid mode. PV energy supply priority setting: 1 Load, 2 Battery PV power will provide power to the load first and then charge battery. Feed-in to the grid is not allowed under this mode. At the same time, the grid relay is connected in Inverter mode.
  • Page 31 2. 1 Battery, 2 Grid (Default) Battery power will provide power to the load first. If battery power is running out, grid will back up the load. NOTE: This option will become ineffective during AC charging time and the priority will automatically become 1 Grid and 2 Battery order.
  • Page 32 When PV power is not available: 1. 1 Grid, 2 Battery: Grid will provide power to the load first. If grid is not available, battery power will provide power backup. 2. 1 Battery, 2 Grid: Battery power will provide power to the load first. If battery power is running out, grid will back up the load.
  • Page 33 Load supply source: When PV power is available: 1 PV, 2 Battery, and 3 Grid PV power will provide power to the load first. If not sufficient, battery power will back up the load. Only if battery power runs out, Grid will back up the load. When PV power is not available: 1.

  • Page 34: Operation

    Operation 16-1. Interface This display is operated by four buttons as shown in the left diagram. NOTICE: To accurately monitor and calculate the energy generation, please calibrate the timer of this unit via software every month. For the detailed calibration, please check the user manual of bundled software.
  • Page 35 Indicates solar panels. Flashing icon indicates PV input voltage or is out of range. Indicates utility. Flashing icon indicates utility voltage or frequency is out of range. Indicates battery condition and the lattice of the icon indicates battery capacity. Flashing icon indicates battery is not allowed to discharge.
  • Page 36 Mute alarm in standby mode or battery mode. NOTE: If backlight is off, you may activate it by pressing any button. When an error occurs, the buzzer will continuously sound. You may press any button to mute it. 16-4. Query Menu Operation The display shows current status that have been set.
  • Page 37 Frequency, voltage, power or percentage of AC output Procedure Input voltage or power of PV input. Procedure...
  • Page 38 Battery voltage or percentage. Procedure Date and time. Procedure...
  • Page 39 Today or total energy generated. Procedure 16-5. Operation Mode & Display Below there is only LCD display for grid-tie with backup mode (I) included. If you need to know other operation mode with LCD display, please check with installer. Inverter mode with grid connected This inverter is connected to grid and working with DC/INV operation.
  • Page 40 PV power is generated, but not sufficient enough to charge battery by itself. PV power and the utility are charging battery at the same time and the utility is also supplying power to the connected load. This inverter is disabled to generate power to the loads via AC output.
  • Page 41 PV power and utility are providing power to the connected loads because of insufficient PV power. Inverter mode without grid connected This inverter is working with DC/INV operation and not connecting to the grid. LCD Display Description PV power is sufficient to charge battery and provides power to the connected loads.
  • Page 42 Only utility is available to provide power to connected loads. Standby mode: The inverter is working without DC/INV operation and load connected. LCD Display Description This inverter is disabled on AC output. Even AC power output is enabled, but an error occurs in AC output. Only PV power is sufficient to charge battery.

  • Page 43: Charging Management

    Charging Management Charging Parameter Default Value Note It can be adjusted via software Charging current from 10Amp to 80Amp. It can be adjusted via software Floating charging voltage (default) 54.0 Vdc from 50Vac to 64Vdc. Max. absorption charging voltage It can be adjusted via software 56.0 Vdc (default) from 50Vac to 64Vdc.
  • Page 44 There is setting screen from software shown below:...

  • Page 45: Maintenance & Cleaning

    Maintenance & Cleaning Check the following points to ensure proper operation of whole solar system at regular intervals. Ensure all connectors of this inverter are cleaned all the time. Before cleaning the solar panels, be sure to turn off PV DC breakers. Clean the solar panels during the cool time of the day, whenever it is visibly dirty.

  • Page 46: Trouble Shooting

    Trouble Shooting When there is no information displayed on the LCD, please check if PV module/battery/grid connection is correctly connected. NOTE: The warning and fault information can be recorded by remote monitoring software. 19-1. Warning List There are 18 situations defined as warnings. When a warning situation occurs, icon will flash and will display warning code.
  • Page 47 19-2. Fault Reference Codes When a fault occurs, the icon will flash as a reminder. Refer to fault codes below. Situation Fault Solution Fault Event Possible cause Code Bus voltage over Surge 1. Restart the inverter. 2. If the error message still remains, please contact your installer.
  • Page 48 between PV and remains, please contact your ground is too low. installer. INV DC current over Utility fluctuates. 1. Restart the inverter. 2. If the error message still remains, please contact your installer. GFCI sensor fault GFCI sensor failed. Please contact your installer. Battery high voltage Battery voltage 1.

  • Page 49: Specifications

    Specifications MODEL SP4000 Premium RATED POWER 4000 W PV INPUT (DC) Maximum DC Power 5000 W Nominal DC Voltage 360 VDC Maximum DC Voltage 580 VDC Working DC Voltage Range 100 VDC ~ 500 VDC Start-up Voltage / Initial Feeding Voltage...
  • Page 50 GENERAL PHYSICAL Dimension, D X W X H (mm) 117 x 438 x 535 Net Weight (kgs) 16.2 INTERACE Communication Port Intelligent Slot Optional SNMP, Modbus and AS-400 cards available ENVIRONMENT Protective Class Ingress Protection Rating IP20 Humidity 0 ~ 90% RH (No condensing) Operating Temperature -10 to 55°C (Power derating above 50°C) Altitude...

  • Page 51: Parallel Operation

    21. Parallel Operation This inverter can be used in parallel with maximum 6 units. The supported maximum output power is 36KW/36KVA. 21-1. Parallel cable You will find the following items in the package: Parallel communication cable Current sharing cable 21-2. Mounting the Unit When installing multiple units, please follow the illustration below.
  • Page 52 Recommended AC input and output cable size for each inverter: Model AWG no. Conductor cross-section Torque 10~8 AWG 5.5~10 mm 1.4~1.6Nm You need to connect the cables of each inverter together. Take the battery cables for example: You need to use a connector or bus-bar as a joint to connect the battery cables together, and then connect it to the battery terminal.
  • Page 53 21-4. Inverters Configuration No matter how many sets of inverters are installed in parallel, please connect L, N, G terminals of AC input and AC output for each inverter together respectively, and connect all battery terminals of each inverter together. Two inverters in parallel: Power Connection Communication Connection...
  • Page 54 Four inverters in parallel: Power Connection Communication Connection Five inverters in parallel: Power Connection Communication Connection...
  • Page 55 Six inverters in parallel: Power Connection Communication Connection Seven to nine inverters in parallel: Power Connection Utility Battery BAT- BAT+ Load Communication Connection Seven inverters in parallel: Eight inverters in parallel: Nine inverters in parallel:...
  • Page 56 21-5. Setting and LCD Display Setting Program: The parallel function setting is only available by SolarPwer or SolarPower Pro. Please install the software in your PC first. For setting, you can set the inverter one by one through RS232 or USB port. Note: When using serial port for communication, you only can monitor the inverter connected with serial port directly.
  • Page 57 Use Modbus card to synchronize the parameters: Each inverter should have one Modbus card. Make sure all of the Modbus cards are connected to each other and one of the Modbus cards is connected to the computer by RS-485/RS232 converter. Launch SolarPower Pro in computer and select Device Control >>...
  • Page 58 Parallel for output: Enable Parallel for output: Disable...
  • Page 59 Fault code display: Fault Code Fault Event Icon on Power feedback protection Relay board driver loss Relay board communication loss Firmware version inconsistent Current sharing fault CAN fault Host loss Synchronization loss 21-6. Commissioning Step 1: Check the following requirements before commissioning: Correct wire connection.
  • Page 60 LCD display in Master unit LCD display in Slave unit Step 5: If there is no more fault alarm, the parallel system is completely installed. Step 6: Please switch on all breakers of Line wires at load side. This system will start to provide power to the load.
  • Page 61 21-7. Trouble shooting Situation Solution Fault Fault Event Description Code Restart the inverter. Check if L/N cables are connected to wrong polarity in Current feedback into the all inverters. inverter is detected. Make sure the sharing cables are connected to all inverters. If the problem remains, please contact your installer.

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