Sila PRO 15000MH User Manual
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Sila PRO 15000MH User Manual

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User Manual
SILA PRO 15000MH
Version: 1.0

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  • Page 1 User Manual SILA PRO 15000MH Version: 1.0...

  • Page 2: Table Of Contents

    Table Of Contents Introduction ........................1 Important Safety Warning ....................2 Unpacking & Overview ....................... 4 3-1. Packing List ....................... 4 3-2. Product Overview ...................... 5 Installation ........................6 4-1. Selecting Mounting Location ..................6 4-2. Mounting Unit ......................6 Grid (Utility) Connection ....................

  • 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 Electric grids PV module 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 where it can be accessed easily. This manual is for qualified personnel. The tasks described in this manual may be performed by qualified personnel only.
  • Page 5 CAUTION! Under high temperature environment, 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 areas. 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 of package: Inverter unit PV connectors AC connector Mounting plate Fixing screws Software CD Manual USB cable...

  • Page 7: Product Overview

    3-2. Product Overview LCD display panel 10) Relay control port Operation buttons 11) Dry contact AC Grid connectors 12) USB communication port AC output connectors (Load 13) RS-232 communication port connection) 14) Parallel communication port PV connectors 15) Intelligent slot DC Switch 16) Battery connectors Battery thermal sensor...

  • Page 8: 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 during operation which may be perceived as a ...
  • Page 9 Drill six holes in the marked Raise the inverter and place it over locations with supplied six screws. the mounting plate. The reference tightening torque is 35 N.m. 3. Fix the inverter in position by Check if the inverter is firmly secured. screwing the supplied two screws (M4*12) located on the top two sides of the inverter.

  • Page 10: Grid (Utility) Connection

    5. Grid (Utility) Connection 5-1. Preparation NOTE: The overvoltage category of the AC input is III. It should be connected to the power distribution. NOTE2: It’s strongly recommended to install the external surge protection device at the grid input. The recommended parameters of the SPD is below: Maximum Continuous Operating Voltage Uc (VAC) 275V~400V Voltage protection Level Up (VAC) kV...
  • Page 11 Step 4: Thread the five cables through pressure dome (A), clip (B), sealing nut (C) and protective element (D) in sequence. Step 5: Thread five cables through socket element (E) according to polarities indicated on it and tighten the screws to fix wires after connection. L1→...

  • Page 12: Pv Module (Dc) Connection

    CAUTION: To prevent risk of electric shock, ensure the ground wire is properly earthed before operating this hybrid inverter no matter the grid is connected or not. 6. PV Module (DC) Connection NOTE1: It’s strongly recommended to install the external surge protection device (SPD) at the solar input.
  • Page 13 Components for PV connectors and Tools: Female connector housing Female terminal Male connector housing Male terminal Crimping tool and spanner Cable preparation and connector assembly process: Strip one cable 8 mm on both end sides and be careful NOT to nick conductors.
  • Page 14 Then, use spanner to screw pressure dome tightly to female connector and male connector as shown below. Step 4: Check correct polarity of connection cable from PV modules and PV input connectors. Then, connect positive pole (+) of connection cable to positive pole (+) of PV input connector.
  • Page 15 CAUTION: Do NOT touch the inverter to avoid electric shock. When PV modules are exposed to sunlight, it may generate DC voltage to the inverter. Recommended Panel Configuration Solar Panel SOLAR INPUT 1 SOLAR INPUT 2 Total Q’ty of Spec. Input (Min in serial: 11pcs;...

  • Page 16: Battery Connection

    7. Battery Connection CAUTION: Before connecting to batteries, please install separately a DC circuit breaker between inverter and batteries. NOTE1: Please only use sealed lead acid battery, vented and Gel battery. Please check maximum charging voltage and current when first using this inverter. If using Lithium iron or Nicd battery, please consult with installer for the details.

  • Page 17: Load (Ac Output) Connection

    8. Load (AC Output) Connection 8-1. Preparation CAUTION: To prevent further supply to the load via the inverter during any mode of operation, an additional disconnection 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 18 L1→ LINE 1 (Black) L2→ LINE 2 (Grey) L→ LINE 3 (Brown) → Ground (Yellow-Green) N→ Neutral (Blue) The reference tightening torque is 1.0-1.5 N.m. Step 4: Push protective dome (D) on to socket element (E) until both are locked tightly. Then, twist protective element (D) and pressure dome (A) so that all cables are firmly connected.

  • Page 19: Communication

    9. Communication The inverter is equipped with several communication ports and it is also equipped with a slot for alternative communication interfaces in order to communicate with a PC with corresponding software. This intelligent slot is suitable to install with SNMP card and Modbus card.

  • Page 20: Dry Contact Signal

    Dry Contact Signal There is one dry contact available on the bottom panel. It could be used to remote control for external generator. 10-1. 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 as above.

  • Page 22: Relay Control Port

    Relay Control Port This port is available to provide a power source (230V/8A) to trigger external relay. This function is only valid for Grid-tie with backup II mode. 11-1. Interface Configuration There are four pins on this port. However, only Pin 1 and Pin 4 are worktable. Please use supplied cables to connect Pin 1 and Pin 4 shown as below charts.

  • Page 23: Application

    Condition 3: 230V Power on When the unit is not working at inverter mode or grid is available. 12-2. Application Below chart is recommended circuit wiring. 3-phase inverter...

  • Page 24: 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 25: 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 requirement (Refer to  Section 6) Check if the open circuit utility voltage of the utility is at approximately same to ...

  • Page 26: Initial Setup

    Initial Setup Before inverter operation, it’s required to set up “Operation Mode” via software. Please strictly follow below steps 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 27 SECTION A: Standard: It will list local grid standard. It’s requested to have 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 28 Allow to feed-in to the Grid: This option is only valid under Grid-tie and Grid-tie with backup modes. Users can decide if this inverter can feed-in to the grid. Allow battery to discharge when PV is available: This option is automatically determined by setting in “Load supply source (PV is available)”.
  • Page 29 It’s allowed to charge battery from PV power first. If it’s not sufficient, grid will charge battery. 2. PV only It is only allow 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 PV, 2...
  • Page 30 PV energy supply priority setting: 1 Load, 2 Battery and 3 Grid. PV power will provide power to the load first. Then, it will charge battery. If there is any remaining power left, it will feed-in to the grid. Battery charging source: 1.
  • Page 31 Grid-tie with backup (III):  PV energy supply priority setting: 1 Load, 2 Grid and 3 Battery PV power will provide power to the load first. If there is more PV power available, it will feed-in to the grid. If feed-in power reaches max. feed-in power setting, the remaining power will charge battery.
  • Page 32 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. Otherwise, it will cause battery damage. Grid-tie with backup (IV): Users are only allowed to set up peak time and off- ...
  • Page 33 Battery charging source: PV and grid charge battery PV power will charge battery first during off-peak time. If it’s not sufficient, grid will charge battery. Load supply source: 1 PV, 2 Grid, 3 Battery When battery is fully charged, remaining PV power will provide power to the load first.
  • Page 34 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 35 1. 1 Grid, 2 Battery Grid will provide power to the load at first. If grid is not available, battery power will provide power backup. 2. 1 Battery, 2 Grid (Default) Battery power will provide power to the load at first. If battery power is running out, grid will back up the load.
  • Page 36 When PV power is available: 1 PV, 2 Grid, 3 Battery PV power will provide power to the load first. 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 When PV power is not available: 1.
  • Page 37 Load supply source: When PV power is available: 1 PV, 2 Battery, 3 Grid PV power will provide power to the load first. If it’s not sufficient, battery power will back up the load. Only after battery power is running, Grid will back up the load. When PV power is not available: 1.

  • Page 38: Operation

    Operation 15-1. Interface This display is operated by four buttons. NOTICE: To accurately monitor and calculate the energy generation, please calibrate the timer of this unit via software every one month. For the detailed calibration, please check the user manual of bundled software. 15-2.
  • Page 39 Indicates charging current to battery or discharging current from battery. Indicates that the warning occurs. Indicates that the fault occurs. Indicates fault code or warning code. Indicates date and time, or the date and time users set for querying energy generation. Indicates solar panels.

  • Page 40: Button Definition

    15-3. Button Definition Button Operation Function Enter query menu. Short press. If it’s in query menu, press this button to confirm selection or entry. Press and hold the button This inverter is able to provide power ENTER/ON for approximately 1 second to connected loads via AC output when the utility is detected connector.
  • Page 41 Setting Display Procedure Input voltage or frequency of AC input  Procedure Frequency, voltage, power or percentage of AC output  Procedure Input voltage or power of PV input.  Procedure...
  • Page 42 Battery voltage or percentage.  Procedure Date and time.  Procedure...

  • Page 43: Operation Mode & Display

    Today or total energy generated.  Procedure 15-5. Operation Mode & Display Below is only contained LCD display for grid-tie with backup mode (I). 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 44 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 45 PV power is sufficient to provide power to loads and feed power back to the grid. 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...
  • Page 46 Bypass mode The inverter is working without DC/INV operation and connecting to the loads. LCD Display Description Only utility is charging battery and providing power to connected loads. Only utility is available to provide power to connected loads. Standby mode : The inverter is working without DC/INV operation and load connected.

  • Page 47: Charging Management

    Charging Management Default Charging Parameter Note Value It can be adjusted via software from Charging current 10Amp to 200Amp. It can be adjusted via software from Floating charging voltage (default) 54.0 Vdc 50Vac to 60Vdc. Max. absorption charging voltage It can be adjusted via software from 56.0 Vdc (default) 50Vac to 60Vdc.
  • Page 48 If using sealed lead acid battery, please set up the max. charging current according to below formula: The maximum charging current = Battery capacity (Ah) x 0.2 For example, if you are using 300 Ah battery, then, maximum charging current is 300 x 0.2=60 (A).

  • Page 49: 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. ...

  • Page 50: Trouble Shooting

    Trouble Shooting When there is no information displayed in 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. 18-1. Warning List There are 17 situations defined as warnings. When a warning situation occurs, icon will flash and will display warning code.

  • Page 51: Fault Reference Codes

    18-2. Fault Reference Codes When a fault occurs, the icon will flash as a reminder. See below for fault codes for reference. 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 52 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. DSP&MCU Internal communication loss components failed or FW update failed DSP&MCU protocol DSP&MCU FW incompatibility...

  • Page 53: Specifications

    Specifications MODEL 15KW RATED POWER 15000 W PV INPUT (DC) Maximum DC Power 22500 W Nominal DC Voltage 720 VDC Maximum DC Voltage 900 VDC Working DC Voltage Range 350 VDC ~ 900 VDC Start-up Voltage / Initial Feeding Voltage 320 VDC / 350 VDC MPP Voltage Range / Full Load MPP 350 VDC ~ 850 VDC / 400 VDC ~ 800 VDC...
  • Page 54 BATTERY & CHARGER (Lead-acid/Li-ion) DC Voltage Range 40 – 62 VDC Nominal DC Voltage 48 VDC Maximum Battery Discharging Current 500 A Maximum Charging Current 300 A GENERAL PHYSICAL Dimension, D X W X H (mm) 820 x 650 x 224 Net Weight (kgs) INTERACE Communication Port...

  • Page 55: Appendix I: Parallel Installation Guide

    Appendix I: Parallel Installation Guide Introduction This inverter can be used in parallel with maximum 6 units. The supported maximum output power is 90KW/90KVA. Warning: Please make sure the output neutral of each inverter is always connected when they are configured in parallel working, or it will damage the inverter. Warning: Please makes sure the solar input of each inverter is independent, or it will damage the inverter.

  • Page 56: Mounting The Unit

    Mounting the Unit When installing multiple units, please follow below chart. NOTE: For proper air circulation to dissipate heat, it’s necessary to allow a clearance of approx. 20 cm to the side and approx. 50 cm above and below the unit. Be sure to install each unit in the same level.
  • Page 57 Regarding cable size of AC input and output, please also follow the same principle. CAUTION!! Please install a breaker at the battery side. This will ensure the inverter can be securely disconnected during maintenance and fully protected from overcurrent of battery.

  • Page 58: Inverters Configuration

    Inverters Configuration Two inverters in parallel: Power Connection Communication Connection Three inverters in parallel: Power Connection Communication Connection...
  • Page 59 Four inverters in parallel: Power Connection Communication Connection Five inverters in parallel: Power Connection Communication Connection...
  • Page 60 Six inverters in parallel: Power Connection Communication Connection...

  • Page 61: Setting And Lcd Display

    Setting and LCD Display Setting Program: The parallel function setting is only available by SolarPower. Please install SolarPower in your PC first. For setting, you can set the inverter one by one through RS232 or USB port. But we suggest to use SNMP or Modbus card to combine the system as a centralized monitoring system.
  • Page 62 Launch SolarPowerPro in computer and select Device Control >> Parameter Setting >> Parallel output. Two options: Enable or Disable. If you want to use parallel function, please choose “Enable” and press “ ” button. Then, “ ” button will be shown is the screen. Please be sure to click “...
  • Page 63 Parallel for output: Disable Fault code display: Fault Code Fault Event Icon on Power feedback protection Firmware version inconsistent Current sharing fault CAN fault Host loss Synchronization loss...

  • Page 64: Commissioning

    Commissioning Step 1: Check the following requirements before commissioning: Correct wire connection.  Ensure all breakers in Line wires of load side are open and each Neutral wire of  each unit is connected together. Step 2: Turn on each unit and set “enable parallel for output” on SolarPower or SolarPower Pro.

  • Page 65: Trouble Shooting

    Trouble shooting Situation Fault Solution Fault Event Description Code Restart the inverter. Check if L1/L2/L3/N cables are not connected with wrong sequence in all Current feedback into the inverters. inverter is detected. Make sure the sharing cables are connected in all inverters. If the problem remains, please contact your installer.

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