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Growatt WIT 28-55K-H-US L2 Quick Start Manual
Growatt WIT 28-55K-H-US L2 Quick Start Manual

Growatt WIT 28-55K-H-US L2 Quick Start Manual

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Battery BOX
Quick Installation Manual
1
.
Overview
1
2
(1) Front panel
(6) BMS communication port
(10) DC switch
(14) BMS power supply port
Note:
1. The content of this document is continually reviewed and amended, where necessary. Growatt reserves the right to make
changes to the material at any time and without notice. Unless otherwise agreed, this document is for quick installation
guidance only. All information and suggestions in this document do not constitute a warranty of any kind, express or implied.
Growatt reserves all rights for final explanation.
2. This document is for quick installation guidance only. For details, please refer to the User Manual.
3. Machine damage caused by failure to follow the instructions is not covered under any warranty.
2
Installation
.
System overview
PV
WIT
BAT
Phone
2.2
Floor-mounted installation
1
Note:
1. When determining the installation position of the inverter, please consider the position of the batteries and the distribution
panel.
2. For export limitation, you are advised to connect an energy meter and current transformers to the inverter.
3
4
5
6 7 8 9 10 11
(2) OLED display screen
(7) Parallel communication port
(11) PV terminal
(15) AC terminal
AC
AC
Breaker
Meter
Load
2
Φ0.47 in
Note:
When drilling holes, avoid the
water pipes and power cables
buried under the ground.
WIT 28-55K-H-US L2 Quick Guide
AC OUTPUT
R
S
T
15
12 13 14
(3) Battery status indicator
(8) Monitor communication port
(12) DRMS communication port
(16) Communication port(WiFi&4G)
2.1
Installation requirements
Grid
40 in
3
N
16
(4) Push button
(9) Network communication port
(13) Battery terminal
(17) Base
40 in
40 in
17
(5) System indicator
Unit: inch
22.62 in
Unit: inch

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Summary of Contents for Growatt WIT 28-55K-H-US L2

  • Page 1 (14) BMS power supply port Note: 1. The content of this document is continually reviewed and amended, where necessary. Growatt reserves the right to make changes to the material at any time and without notice. Unless otherwise agreed, this document is for quick installation guidance only.
  • Page 2: Connecting Cables

    Connecting cables Please prepare the cables listed below before electrical connections. Recommended Note: Cable Type specifications 1. Make sure all switches are OFF A multiple-core copper cable before connecting the cables. For Grounding cable 1AWG personal safety, do not operate (yellow and green) when power-on.
  • Page 3 3.3.2 Connecting the PV input cables Note: 1. Before installing the PV terminals, please confirm that the PV input voltage and current do not exceed the MPPT limits. 2. When installing the PV terminals, identify the positive and negative terminals and connect them to the inverter respectively following the color convention.
  • Page 4 Monitor communication port Monitor communication port description(COM1) Description Note Description Note RS485A4 RS485B2 (OUT) RS485 output port for the meter RS485_4 RS485B4 Res_RS4851B RS485 matching resistor RS485A1(IN) Grounding RS485 terminal for external communication RS485B1(IN) REPO1 The WIT Inverter shutdown input dry contact signal Res_RS4851A RS485 matching resistor...
  • Page 5 Please follow the steps below: 1. Remove the antenna dust cap or the protective cover from the network port. 2. Install the antenna as shown in the diagram. WiFi&4G 3. Connect the antenna to the inverter correctly and tighten it. 4.
  • Page 6: Post-Installation Check

    System indicator Communication indicator PV indicator Battery status indicator On-grid indicator Push button Off-grid indicator 3.5.6 Communication module installation Service and contact Growatt USA, Inc. 9227 Reseda Blvd, #435 Northridge, CA 91324, USA. +1-866-686-0298 usaservice@ginverter.com us.growatt.com Download Manual GR-UM-374-A-01 (PN: 044.0124401)