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

Battery BOX
Quick Installation Manual
1 . Overview
Output Power
55.0
KW
2 3 4 5
1
(1) Front panel (2) OLED display screen
(6) BMS communication port (7) Parallel communication port
(11) PV terminal (12) Network communication port
(15) AC terminal
(16) Base
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
Grid
AC
PV
Breaker
PCS
Meter
Load
Phone
BAT
2.2
Floor-mounted installation
1 2
Φ0.47 in
Note:
When drilling holes, avoid the
water pipes and power cables
buried under the ground.
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.
WIT 28-55K-H-US L2 Quick Guide
6 7 8 9 10 11 12 13 14 15
(3) Battery status indicator (4) Push button
(8) Monitor communication port (9) Communication port
(13) Battery terminal (14) BMS power supply port
2.1
Installation requirements
40 in
T
40 in 40 in
Grid
3
3. Connecting cables
Please prepare the cables listed below before electrical connections.
No. Cable
1 Grounding cable
2 AC output cable
3 PV input cable
4 Battery power supply cable
5 BMS power supply cable
16
6 Other communication cable
(5) System indicator
3.1
Grounding
(10) DC switch
Unit: inch
Note:
Ensure that the ground point on
the enclosure base has been
reliably connected to the on-site
ground busbar.
22.62 in 3.3
DC connection
3.3.1 Assembling the PV connectors
1
Positive metal contact
Unit: inch
0.31-0.39 in
0.31-0.39 in
Negative metal contact
4
Ensure secure connection
by tightening the locking
nut.
Recommended
Type
specifications
A multiple-core copper cable (yellow and
1AWG
green)
A multi-core copper cable 2/0AWG-400kcmil
Photovoltaic cable 12AWG-10AWG
A single-core copper cable (red and black) 1AWG
A multi-core copper cable 20AWG-14AWG
RS485 /
3.2
GRID and LOAD side cable connection
2
1
4
Note:
Once the cable connections
are complete, check if the
cable feed-through pipes
and cables are secured in
place, and finally lock the
AC junction box cover.
2 3
Unit: inch
Ensure that the cable cannot be pulled out from the
terminal after crimping.
5
Note:
1. Make sure all switches are
OFF before connecting the
cables. For personal safety, do
not operate when power-on.
2. If the diameter of the cable
does not match the terminal,
please contact our after-sales
personnel.
3. The current carrying capacity
of cables should comply with
locally applicable regulations.
3
5
Positive metal connector
Negative metal connector
Pull the PV cables back to check that they are connected
securely.
Make sure the cable polarity is correct.