Growatt WIT+APX PV-ESS-DG User Manual
  1. Manuals
  2. Brands
  3. Growatt Manuals
  4. Storage
  5. WIT+APX PV-ESS-DG
  6. User manual
Growatt WIT+APX PV-ESS-DG User Manual

Growatt WIT+APX PV-ESS-DG User Manual

Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
WIT+APX PV-ESS-DG System Solution
User Manual
Shenzhen Growatt New Energy Co., Ltd.
4-13/F, Building A, Sino-German (Europe) Industrial Park,
Hangcheng Blvd, Bao'an District, Shenzhen, China
Tel: 400-931-3122
Email: usaservice@ginverter.com
Web: us.growatt.com

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the WIT+APX PV-ESS-DG and is the answer not in the manual?

Questions and answers

Related Manuals for Growatt WIT+APX PV-ESS-DG

Summary of Contents for Growatt WIT+APX PV-ESS-DG

  • Page 1 WIT+APX PV-ESS-DG System Solution User Manual Shenzhen Growatt New Energy Co., Ltd. 4-13/F, Building A, Sino-German (Europe) Industrial Park, Hangcheng Blvd, Bao'an District, Shenzhen, China Tel: 400-931-3122 Email: usaservice@ginverter.com Web: us.growatt.com...

  • Page 2: Table Of Contents

    Table of Contents 1. Introduction ........................... 4 1.1 Overview ..........................4 1.2 Target Group ........................4 1.3 Symbol Conventions ......................4 Safety Precautions ........................6 2.1 General Safety ........................6 2.2 Safety Instructions ....................... 6 3. System Introduction ........................8 3.1 System Overview ........................
  • Page 3 6.2.1 WIT Inverter Warnings ................... 59 6.2.2 WIT Inverter Errors ....................64 6.2.3 APX Battery Faults ....................71 7. Decommissioning........................77 3 / 77...

  • Page 4: Introduction

    Only qualified electrical technicians are allowed to install the PV-ESS-DG System. Installers should read through this manual prior to installing, commissioning and troubleshooting the system. If questions arise during installation, you can visit us.growatt.com to leave a message or contact Growatt customer services at 400-931-3122.
  • Page 5 NOTICE indicates a situation which, if not avoided, can result in property damage. Information that you must read and know to ensure optimal system operation. Table 1.2 Safety labels Symbol Designation Meaning High voltages are present when the system is in operation. All High voltage work on the system must be performed by well-trained electrical technicians.

  • Page 6: Safety Precautions

    2.Safety Precautions Before operation, please read the precautions and operating instructions in this manual carefully to avoid accidents. The "DANGER", "WARNING" and "CAUTION" statements in this manual do not represent all safety matters to be observed, and are intended to supplement various operational safety precautions. 2.1 General Safety 1) Please read this manual carefully before installation.
  • Page 7 Electrical Connections: ● Before electrical connections, make sure that the DC switches on the inverter and the battery are in the "OFF" position. ● Turn off the AC breaker; otherwise high voltages on the grid side may cause lethal injuries. ●...

  • Page 8: System Introduction

    3. System Introduction 3.1 System Overview The Growatt WIT+APX PV-ESS-DG System consists of the WIT inverter, the APX commercial battery system, the smart meter and others. This system can be applied to C&I (Commercial & Industrial), micro-grid and other application scenarios. Diverse operating modes are available, including on-grid mode, off-grid mode and on/off-grid transfer.

  • Page 9: System Highlights

    Prepared by users (requires external Diesel generator Supplier dry contact to activate) BREAKER Circuit breaker Prepared by users Supplier 3.1.2 System Highlights Feature diverse application scenarios, including self-consumption, peak shaving, power backup, and microgrid. Equipped with on-grid, off-grid and on/off grid switching capabilities. Support multiple systems to be connected in parallel, enabling battery and power expansion.

  • Page 10: Wit Inverter Operating Mode

    3.1.4 WIT Inverter Operating Mode Load first: The solar power and the battery power are prioritized towards powering the loads. If the export limitation is disabled, the surplus solar power will be fed to the grid while the battery power cannot be sold to the grid. If the export limitation is enabled, neither the solar power nor the battery power would be sent to the grid.

  • Page 11: Description Of Components Within The Scope Of Delivery

    Time-of-use (TOU) Control: Configure the system to work in the preset mode during different time segments, especially suitable for areas with peak-valley electricity pricing. Power expansion: When the distributed power is insufficient to support the short-term peak loads, the PV-ESS-DG system outputs power and draws power from the grid to support the loads, thus enhancing its power supply capacity.

  • Page 12: Reference Documents

    between on-grid and off-grid operation; only supports the connection of batteries. ● The –A Storage Inverter models have one AC port, only supporting the connection of batteries. ● 14.33kWh per battery pack; 9-14 unit can be connected in series with the minimum capacity B.
  • Page 13 Battery APX Quick Guide TPM-CT-E-US TPM-CT-E-US Quick Guide 13 / 77...

  • Page 14: System Installation

    4. System Installation 4.1 System Layout 4.1.1 Basic Installation Requirements A. Ensure that the installation surface is solid enough to support the weight of the system for a long time. B. Ensure that the installation position comply with the layout clearance requirements, which are specified in this section.
  • Page 15 Fig 4.2（The units in the figure are:mm） 1. Keep the system far from strong magnetic signal. 2. Ensure that the system is out of the reach children. 4.1.2 System Layout Set up the PV-ESS-DG system according to the system layout, observing clearance requirements. Do not build or run the system in a narrow space.
  • Page 16 Fig 4.3 System layout（The units in the figure are:mm） To extend the service life of the system and avoid power de-rating due to excessive temperature, you are advised to install a sun shelter when the system is installed outdoors to shield it from direct sunlight and rain. As shown in the figure below, please leave a clearance of 39.37 inches on the front side and 59.06 inches on both sides.
  • Page 17 Fig 4.5 Side view of the sun shelter（The units in the figure are:mm） 4.1.3 Install System Components Please refer to the User Manual of each component mentioned in Chapter 3. 17 / 77...

  • Page 18: Cable Connections

    4.2 Cable Connections Primary Load Communication cable Ac power cable Grid PV+power cable Sampling cable PV 1 Fig 4.6 PV+ESS+DG system electrical connections 4.2.1 Connect the PE Cables ● Connect the PE cables of the PV-ESS-DG system before connecting any other cables. Ensure that all components are properly grounded to prevent personal injury and device damage.

  • Page 19: System Wiring Safety Precautions

    Fig 4.7 System ground point positions Note: Connect the PE cable of each component to the grounding bar, using the shortest wiring route whenever possible. 4.2.2 System Wiring Safety Precautions  Before electrical connections, make sure that the DC switches of all components are in the "OFF"...

  • Page 20: System Wiring Instructions

    Table 4.1 Cable list for system wiring Cable usage Connection Remark APX-WIT power WIT (BAT+) ~ APX (PCS+) W00/W01 Provided by Growatt cable WIT (BAT-) ~ APX (PCS-) APX-WIT AC WIT (BMS AC) ~ APX (AC INPUT) Provided by Growatt power supply cable...
  • Page 21 Inverter’s AC-side power cables (W04~W07, W16~W19): Table 4.3 WIT inverter – Recommended AC power cable specification Inverter model Recommended cable specification WIT 50/63K-A/-H-US 1 AWG WIT 75/100K-A/-H-US 2/0 AWG Table 4.4 WIT inverter – Recommended AC power cable specification Inverter model Grid-side recommended cable Load-side recommended cable specification...
  • Page 22 Fig 4.8 Wiring of the APX battery system After the cable connection is complete, check the following items: Table 4.5 Battery system cable connection checklist Checking item General item Position 1. Check the yellow-green PE cable and screws supplied with each component. Between modules 2.
  • Page 23 1. Check the battery terminals. 2. Cables are securely connected. Between two BMs in 3. Check the cable connecting two BMs in the same column, the same column with a black connector on one end and an orange connector on the other end. 1.
  • Page 24 may cause lethal injuries.  All operations must be performed by trained and professional electricians. Comply with all safety information specified in this manual and local regulations.  Do not touch the equipment in operation unless necessary as high voltages are dangerous.
  • Page 25 The maximum open-circuit voltage per PV string should not exceed 1100V.  Ensure that all requirements are fulfilled to prevent fire or damage to the WIT inverter, which is beyond the scope of warranty, and Growatt shall not be liable for any consequential damages. 1. Pipe position Pipe ③...
  • Page 26 1. Pipe position and dimensions Pipe ⑦ routes four cables: W16, W17, W18 and W19, which should be prepared by users separately according to the recommended specifications. The wiring terminals are provided by Growatt. 2. Cable connection W16, W17, W18 and W19: power cables between WIT and grid, fed through Pipe ⑦, connecting grid port (R/S/T/N) on the WIT to the grid (R/S/T/N) as shown below: Fig 4.11 Wiring on the WIT inverter’s grid side...

  • Page 27: Checklist

    connecting the three-phase current sampling port of the smart meter to CT 1/2/3 (S1 and S2), as shown below: Fig 4.12 Wiring of communication cables between WIT and the Smart Meter Fig 4.13 Wiring of meter’s communication and sampling cables 4.3 Checklist Upon completion of cable connections, please check all cable connections referring to the checklist below: Table 4.16 System electrical connection checklist...
  • Page 28 Protect the wiring terminals from rain. The battery terminals (orange and black) are correctly installed. Power cables between the APX Cables are securely connected. battery and WIY inverter Prevent cables from being cut by the edges of the cable sleeve. Ensure correct and secure cable The AC power supply cable between connection.

  • Page 29: System Commissioning

    5. System Commissioning 5.1 Power on the System 1. Turn on all DC-Switches on the right side of the WIT inverter. Note: If there is no disconnecting device such as a combiner box between the PV array and the WIT, terminals of the PV panel will be energized.
  • Page 30 Register an account on the website Open the browser, then enter http://server-us.growatt.com in the address box to access the login page. Click “Register an Account”. On the Registration Page, fill in the information as prompted and click to agree to the Privacy Policy. Fields marked with the “·”...

  • Page 31: Create A Plant

    5.2.2 Create a Plant Note: Ensure a consistent connection to the Internet to perform the following operations. 1. Create a plant with the APP Tap “Plant” > the “+” icon on the upper right corner > “Add Plant”. Fill in the information, then tap “Add Plant”. 31 / 77...
  • Page 32 2. Create a plant on the website Click “All Plants” > “Add Plant” on the upper right corner. Fill in the information, then click “Yes”. 32 / 77...

  • Page 33: Network Configuration With Shinetools

    5.2.3 Network Configuration with ShineTools 1. Connect the WIT inverter to the Internet on ShineTools Open ShineTools APP. On the login page, click "End User" and enter the password. The password format is "oss + current date". E.g. oss20230925. Then click "Sign in". 2.
  • Page 34 Click "Connect" after the target Bluetooth device is displayed. 34 / 77...
  • Page 35 After the device is successfully connected, it will display the following page. Make sure that the communication between the WIT inverter and the mobile phone has been established over Bluetooth. "Then connect the WIT inverter to the WiFi network. Click ""Quick Settings"" > ""Network Type"" > ""WiFi"". Enter the WiFi name and password, click ""Connect to Internet""...

  • Page 36: Smart Meter Configuration

    5.2.4 Smart Meter Configuration Ensure the correct wiring of the Smart Meter, including the grid-side voltage sampling cable, the current sampling cable wiring to the CT, the communication cable and the PE cable as instructed in Chapter 4. Then set parameters following instructions below: Smart Meter configuration Connect the voltage sampling cable, the current sampling cable wiring to the CT, the communication cable...
  • Page 37 Tap “Plant”, then select the target plant from the plant list. Find the WIT inverter from “My device list” for parameter settings, which requires password: Growatt+the current date. For instance, if the date is November 1, 2023, the password is growatt20231101.
  • Page 38 5.2.5.2 Online Commissioning on the Webpage Web commissioning is the same as the APP commissioning. Sign in with your account and select your target plant to access the page below: 38 / 77...
  • Page 39 Select the target WIT inverter from the device list for parameter settings. You need to enter the password: the current date, e.g. 20231113. 39 / 77...
  • Page 40 Set all the above parameters the same as parameter settings with the APP. 5.2.5.3 Parameter Settings Parameter settings with the ShinePhone APP is the same as that on the website. This section takes settings with APP as an example. Mode Selection and Time Setting: configure parameters based on actual use. You can set the inverter to operate in three modes: Load First, Grid First or Battery First during different time segments.
  • Page 41 Note: 1. You are advised to set the Battery First mode during off-peak hours, and Grid first mode during peak hours, contributing to cost savings. 2. The operating modes mentioned above apply to the on-grid system. For the off-grid system, it will not response to the priority settings, but gives priority to ensuring the AC output voltage.
  • Page 42 Setting On/Off-grid Switching Mode: includes automatic mode and manual mode; when set to the automatic mode, the WIT inverter will switch between on/off-grid mode automatically based on the output of AC grid port; when set to the manual mode, you need to set the on/off-grid operating mode manually. Note: The -H/-A models do not support the automatic mode.
  • Page 43 WIT inverter to operate in the off-grid mode. Set the Off-grid Frequency and Voltage in line with the grid power; setting other grid voltage level is prohibited. Growatt shall not be liable for damage caused by failure to follow instructions on setting the voltage level.
  • Page 44 Battery Parameter Settings: you can set the battery charging/discharging cutoff SOC (in percentage, ranging from 0 to 100), and enable/disable the AC charging function. Set Reactive Power: eight modes are available: PF fixed to 1, Set PF, Default PF Curve, Inductive Reactive Power, Capacitive Reactive Power, QV Mode and Positive &...
  • Page 45 Export Limitation: you can enable or disable this function based on the actual use. Power imported from the grid to the system is forward flow, while power exported from the system to the grid is reverse flow. You can limit the power exported to the grid by setting the export limitation power percentage, ranging from 0 to 100.
  • Page 46 Max. Charging and Discharging Current: limit the maximum charging and discharging current of the battery terminals. This configuration only applies when the battery is directly connected to the inverter, and does not apply to the battery with the DC-DC converter. Balancing Charging: limits the battery maximum charging voltage.
  • Page 47 EOD Voltage: battery discharge cutoff voltage. The battery will stop discharging when the actual voltage is lower than the value. This configuration only applies when the battery is directly connected to the inverter, and does not apply to the battery with the DC-DC converter. Customized PF Curve: you can configure 4 points, setting the PF value and the reactive power.

  • Page 48: Local Commissioning

    5.2.6 Local Commissioning If no WiFi connection is available in the commissioning area, you can connect to the datalogger within a short distance over the ShineTools APP to connect to the server, enabling you to view and set system parameters through the APP without configuring the datalogger.
  • Page 49 Connect to the datalogger Bluetooth or WIFI hotspot to establish communication between the phone and the datalogger. Select the model to enter the commissioning page. Select the setting items below based on your needs: A. Quick setting items Inverter Time: set the time of the WIT inverter. With connection to the datalogger, the time will be calibrated automatically.

  • Page 50: Application Scenario Configuration

    thus improving safety during startup. Off-grid Soft Start Time: set the startup time with the soft start function enabled. Grid Code Settings Note: Users are not authorized to modify parameters of this section as it might affect the normal operation and protection logic.
  • Page 51 Peaking shaving: Manage customers’ energy usage reasonably and systematically according to their electricity consumption patterns, to shave the peaks and fill up the valleys. Minimize the load peak-valley difference to balance power generation and consumption. Figure out the peak and valley demand period. During the peak demand period, set Grid First mode and disable the AC Charging function;...
  • Page 52 Power expansion: to enhance the power supply capacity. Set the Load First mode and enable the AC Charging function if you need to charge the battery with the grid power. 52 / 77...
  • Page 53 Microgrid: A microgrid is a stand-alone system that consists of distributed energy sources, generally connected to the larger grid with power cables. The microgrid can function independently or in cooperation with the primary utility grid. Set on/off-grid switching mode to automatic mode, enable the off-grid mode and select the off-grid frequency and off-grid voltage.

  • Page 54: System Operating Modes

    5.4 System Operating Modes After configuring system parameters, power on the WIT inverter and check if the system is operating properly with the APP or on the website. The intelligent control system of the WIT inverter and the APX battery constantly monitors and adjusts the operating status of the system.
  • Page 55 Charging mode: Charge the battery with power drawn from the grid (AC Charging function should be enabled). This mode should be set manually. You can set the charging period and charging power. Discharging mode: The battery discharges power to the AC side. This mode should be set manually.

  • Page 56: Fault Mode

    Note: You are advised to set the Battery First mode during off-peak hours, and Grid first mode during peak hours, contributing to cost savings. The operating modes mentioned above apply to the on-grid system. For the off-grid system, it will not response to the priority settings, but gives priority to converting the battery energy to power the loads.

  • Page 57: System Maintenance

    6. System Maintenance 6.1 Routine Maintenance 6.1.1 Clean the Enclosure ● Wait 5 minutes after disconnecting the AC breaker or the DC upstream breaker/switch until the capacitor is fully discharged. ● If the product gets dusty, clean its enclosure with a wet cloth 5 minutes after the system is powered off.
  • Page 58 from the WIT inverter, as Fig 6.1 shows: Loosen the screws on both sides of the battery fan cover with the Allen key, then remove the fan cover as shown in Fig 6.2. Fig 6.1 Remove fans from the WIT inverter 5.

  • Page 59: Troubleshooting

    English Suggestion 1. Check if the PV panels are normal after shutdown. String Fault PV string fault 2. If the error message persists, contact Growatt support. PV string/PID 1. Check the wiring of the string terminals after Warning 201 quick-connect terminals shutdown.
  • Page 60 Growatt support. 1. Check the polarity of the PV terminals. PV Reversed PV wiring abnormal 2. If the error message persists, contact Growatt support. 1. Restart the inverter. BDC Abnormal BDC abnormal 2. If the error message persists, contact Growatt support.
  • Page 61 1. Check if the meter is properly connected. Meter Open Meter disconnected 2. If the error message persists, contact Growatt support. 1. Check if the L line and the N line of the meter are Meter Reversed Meter wiring abnormal reversely connected.
  • Page 62 Abnormal operation of 1. Restart the inverter. Warning410 the chip 2. If the error message persists, contact Growatt support. 1. Check if the sync cable is abnormal. Warning411 Sync signal abnormal 2. If the error message persists, contact Growatt support.
  • Page 63 1. Check if the power of the load exceeds the BAT rated Lithium battery Li-BAT Overload discharge power. overload protection 2. If the error message persists, contact Growatt support. BMS communication 1. Restart the inverter. BMS Warning :XXX abnormal 2. If the error message persists, contact Growatt support.

  • Page 64: Wit Inverter Errors

    Error codes denote a possible equipment failure, fault or incorrect inverter setting or configuration. Any or all attempts to correct or clear a fault must be performed by qualified personnel. The error code would disappear once the fault is cleared. For the irreparable faults, please contact Growatt support. Table 6.2 WIT inverter error code list...
  • Page 65 PE cable is abnormal 2. If the error message persists, please contact Growatt support. Grid frequency is 1. Check the grid frequency and restart the inverter. AC F Outrange beyond the permissible 2. If the error message persists, please contact Growatt range support.
  • Page 66 1. Restart the inverter. Error 405 Relay failed 2. If the error message persists, please contact Growatt support. 1. Restart the inverter. Initialization mode Error 406 2. If the error message persists, please contact Growatt abnormal support. 1. Restart the inverter.
  • Page 67 1. Restart the inverter. DC/AC overcurrent Error 416 2. If the error message persists, please contact Growatt protection support. 1. Restart the inverter. Communication protocol Error 417 2. If the error message persists, please contact Growatt mismatch support. 1. Check the firmware version.
  • Page 68 BOOST short-circuited Please contact Growatt support. 1. Restart the inverter. Error 429 BUS soft start failed 2. If the error message persists, please contact Growatt support. 1. Restart the inverter. Error 430 EPO fault 2. If the error message persists, please contact Growatt support.
  • Page 69 1. Check the wiring of the battery terminals. Battery Open Battery disconnected 2. If the error message persists, please contact Growatt support. 1. Check if the power of the load exceeds the battery rated Lithium battery overload discharge power. BAT Over Load protection 2.
  • Page 70 1. Restart the inverter. High DC component in Output High DCV 2. If the error message persists, please contact Growatt output voltage support. 1. Restart the inverter. EPS Abnormal Off-grid output overload 2. If the error message persists, please contact Growatt support.

  • Page 71: Apx Battery Faults

    Fault codes denote a possible equipment failure or incorrect setting or configuration. Any or all attempts to correct or clear a fault must be performed by qualified personnel. The fault code would disappear once the fault is cleared. For the irreparable faults, please contact Growatt support. Table 6.3 APX battery system – CM fault code list 1...
  • Page 72 If not, please contact Growatt technical support. Check if the equipment operating temperature exceeds Copper bar PROTECT 408 the specified range. If not, please contact Growatt over-temperature protection technical support. Total voltage over-voltage PROTECT 409...
  • Page 73 Please contact Growatt technical support timeout protection Please check if the number of the connected BMs System voltage level does FAULT 1149 matches with the inverter. If so, please contact Growatt not match technical support. The isolation switch is FAULT 1150...
  • Page 74 Power off the system, then restart to check if the fault is Parallel operation with FAULT 411 cleared. If the problem persists, please contact Growatt multi-master failed technical support. Power off the system, then restart to check if the fault is Software...
  • Page 75 Growatt technical support. Restart the system. If the problem persists, please contact WARNING 502 Battery voltage is low Growatt technical support. Check if the equipment operating temperature exceeds WARNING 408 Over-temperature the specified range. If not, please contact Growatt 75 / 77...
  • Page 76 Check if the equipment operating temperature exceeds Ambient temperature WARNING 408 the specified range. If not, please contact Growatt over-high technical support. Restart the system. If the problem persists, please contact WARNING 700 NTC open-circuited Growatt technical support.

  • Page 77: Decommissioning

    Remove cables on the DC side. Remove the WIT inverter from the installation location. Remove cables between the battery clusters. Shenzhen Growatt New Energy Co., Ltd. 4-13/F, Building A, Sino-German (Europe) Industrial Park, Hangcheng Ave, Bao'an District, Shenzhen, China 400-931-3122 usaservice@ginverter.com...

Table of Contents