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1 Notes on this manual
1.1 Introduction
This manual is intended to introduce the WIT 50-100K Storage/Hybrid Inverters
manufactured by Shenzhen Growatt New Energy Co.,Ltd. (hereinafter referred to as
Growatt) in terms of their installation, operation, commissioning, maintenance and
troubleshooting. Please read this manual carefully before using the product, and keep it in
a convenient place for future reference. The content of this manual is continually
reviewed and amended, where necessary. Growatt reserves the right to make changes to
the material at any time and without notice.
Note:
"WIT" refers to the product name and "50-100K" indicates the power classes. The WIT
series comprises both Storage Inverter models and Hybrid Inverter models.
1.2 Target Group
This document is intended for qualified technicians. Only qualified and well-trained
technicians are allowed to install and operate the WIT inverter. Should any questions arise
during installation, you can visit www.growatt.com to leave a message, or call our 24-
hour service hotline at +86 755 2747 1942.
1.3 Product Range
The WIT 50-100K (380V/400V) Storage/Hybrid inverters consist of six models, each
offering four power classes: 50kW, 63kW, 75kW, and 100kW. In total, there are 24
products in this series. This manual is valid for the following models:
Table 1.1 WIT 50-100K Storage/Hybrid inverter
WIT 50K-A
WIT 63K-A
Three-phase Storage
Inverter
WIT 75K-A
WIT 100K-A
WIT 50K-AE
Three-phase Storage
WIT 63K-AE
Inverter with EPS
WIT 75K-AE
function
WIT 100K-AE
WIT 50K-AU
Three-phase Storage
WIT 63K-AU
Inverter with UPS
WIT 75K-AU
function
WIT 100K-AU
1
WIT 50K-H
WIT 63K-H
Three-phase Hybrid
Inverter
WIT 75K-H
WIT 100K-H
WIT 50K-HE
Three-phase Hybrid
WIT 63K-HE
Inverter with EPS
WIT 75K-HE
function
WIT 100K-HE
WIT 50K-HU
Three-phase Hybrid
WIT 63K-HU
Inverter with UPS
WIT 75K-HU
function
WIT 100K-HU
Safety Precautions 2
2.1 Safety Instructions
1) Please read this manual carefully before installation. Damages caused by failure to
follow the instructions in the manual are beyond the warranty scope.
2) Only qualified and trained electrical technicians are allowed to perform operations on
the WIT Inverter.
3) During installation, please do not touch other parts inside the equipment other than
the wiring terminals.
4) Ensure that all electrical connections comply with local electrical standards.
5) Only designated personnel are permitted to perform maintenance on the inverter.
6) Before operating the WIT Inverter in on-grid mode, ensure that you have obtained any
permission needed from the local grid operator.
Transportation:
Ÿ
Risk of injury when lifting the WIT Inverter or due to a falling inverter,
as it is heavy. Please transport and lift the inverter with caution.
WARNING
Installation:
Ÿ
Please read this manual carefully before installation. Damages
caused by failure to observe instructions specified in this manual are
not covered under any warranty.
NOTICE
Ÿ
Do not connect any cables before installation.
DANGER
Please observe the installation instructions specified in this manual,
Ÿ
including the installation environment and clearance requirements.
Ÿ
Install the WIT Inverter in a dry and well-ventilated location;
otherwise, performance de-rate may be initiated due to excessive
temperature.
WARNING
Please read the installation instructions and safety precautions
Ÿ
carefully before installation.
Electrical Connections:
Before connecting cables, ensure that the DC switches of the WIT
Ÿ
Inverter are OFF, and turn off the switch and breaker on the AC side
and the battery side. Otherwise, high voltages may cause severe
injuries.
Ÿ
It must be operated by qualified and trained electrical technicians.
Technicians should observe instructions in this manual and local
DANGER
regulations.
Ÿ
High voltages may cause electric shocks and serious injury. Please do
not touch the WIT Inverter in operation.
Do not install the inverter in potentially explosive and flammable
Ÿ
atmospheres.
2
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