Growatt WIT 50K-A-US User manual
GR-UM-355-A-00
9227 Reseda Blvd, #435 Northridge, CA 91324, USA.
Growatt USA, Inc.
Download
Manual
WIT 50-100K-US Storage/Hybrid Inverter
User Manual
T +1-866-686-0298
E usaservice@ginverter.com
W us.growatt.com
Contents
3.7 AFCI Function ............................................................................................................. 12
5.4.2 Wall-mounted Installation ................................................................................... 20
3.6 Supported Grid Types ............................................................................................... 12
6.2 Connection on the AC Side....................................................................................... 27
3.7.1 AFIC function description ..................................................................................... 12
3.4.1 Operating Principle of WIT 50-100K-A-US ........................................................ 10
2.1 Safety Instructions ....................................................................................................... 2
2.2 Symbol Conventions .................................................................................................... 3
2.3 Label Description ......................................................................................................... 4
2 ................................................................................ 2Safety Precautions
3 Product Description .............................................................................. 5
3.4.2 Operating Principle of WIT 50-100K-H-US......................................................... 10
3.5 Storing the WIT Inverter .......................................................................................... 12
5 1. Basic Installation Requirements.............................................................................. 16
5.2 Installation Environment Requirements ............................................................... 17
3.7.2 Clearing the alarm ................................................................................................. 13
5.4 Mounting the WIT Inverter ...................................................................................... 19
3.8 Anti-PID Function ...................................................................................................... 13
3.4.3 Operating Principle of WIT 50-100K-AU-US ...................................................... 11
3.3 Nameplate .................................................................................................................... 9
3.4.4 Operating Principle of WIT 50-100K-HU-US ..................................................... 11
5 Installation ........................................................................................... 16
5.4.1 Ground-mounted Installation.............................................................................. 19
1 Notes on this manual.................................................................................1
3.4 Operating Principle .................................................................................................. 10
6 Electrical Connection ......................................................................... 22
4 Inspection upon delivery................................................................... 14
6.1 Connecting the Ground Cables................................................................................ 26
3.1 Overview ....................................................................................................................... 5
3.2 Basic Data ...................................................................................................................... 8
1.1 Introduction.................................................................................................................. 1
1.2 Target Group ................................................................................................................. 1
1.3 Product Range............................................................................................................... 1
5.3 Moving the WIT Inverter........................................................................................... 18
6.3 Connection on the PV Side ....................................................................................... 30
6.5.1 Battery Communication Connection .................................................................. 33
6.4 Connection on the Battery Side .............................................................................. 31
6.4.1 Connecting the Main Power Cable of the Battery............................................ 32
6.4.2 Connecting the Battery BMS-AC Terminal......................................................... 33
6.5 Connecting Communication Cables ....................................................................... 33
6.5.6 Rapid Shutdown Device (RSD).............................................................................. 41
7.1 Powering on/off the System..................................................................................... 44
7.2 Commissioning the WIT Inverter............................................................................. 45
6.5.5 DRMS Port ................................................................................................................ 40
7.3.1 Waiting Mode.......................................................................................................... 46
7.3.4 Shutdown Mode...................................................................................................... 47
7.2.1 Set the Communication Address.......................................................................... 45
7.4 LED and OLED Display Panel..................................................................................... 48
6.5.2 External Communication Connection ................................................................ 35
8 Monitoring ........................................................................................... 51
8.1 Remote Monitoring................................................................................................... 51
8.1.2 .................................................. 54Remote Monitoring on the APP (ShinePhone)
7.3.2 Operating Mode ..................................................................................................... 46
8.1.3 .......................................... 70Remote Monitoring on the ShineServer Webpage
7.2.2 Set the Time and Date ............................................................................................ 45
7.3 Mode of operation..................................................................................................... 46
9 System Maintenance.......................................................................... 91
8.1.1 Connect the WIT inverter to the internet on ShineTools................................ 51
9.1.1 Clean the Chassis .................................................................................................... 91
9.1.2 Fan Maintenance .................................................................................................... 91
6.5.4 Monitoring Device Terminal................................................................................. 40
9.2 Troubleshooting......................................................................................................... 93
6.5.3 Parallel Communication Connection.................................................................. 37
6.6 Post-installation Checks ........................................................................................... 42
7 Commissioning .................................................................................... 44
7.3.3 Fault Mode ............................................................................................................... 47
9.1 Routine Maintenance................................................................................................ 91
10 Product specifications ................................................................... 104
Table 10.1 WIT 50/63/75/100K-A-US specification ................................................... 104
9.2.1 Warning.................................................................................................................... 93
9.2.2 Error .......................................................................................................................... 98
Table 10.2 WIT 50/63/75/100K-H-US specification ................................................... 107
Table 10.4 WIT 50/63/75/100K-HU-US specification .............................................. 113
11 Decommissioning the WIT Inverter ............................................ 117
13 Contact Us ........................................................................................ 119
12 Warranty .......................................................................................... 118
Table 10.3 WIT 50/63/75/100K-AU-US specification .............................................. 110
12.2 Disclaimer ............................................................................................................. 118
12.1 Conditions ............................................................................................................ 118
6.5.1 Battery Communication Connection .................................................................. 33
6.4 Connection on the Battery Side .............................................................................. 31
6.4.1 Connecting the Main Power Cable of the Battery............................................ 32
6.4.2 Connecting the Battery BMS-AC Terminal......................................................... 33
6.5 Connecting Communication Cables ....................................................................... 33
6.5.6 Rapid Shutdown Device (RSD).............................................................................. 41
7.1 Powering on/off the System..................................................................................... 44
7.2 Commissioning the WIT Inverter............................................................................. 45
6.5.5 DRMS Port ................................................................................................................ 40
7.3.1 Waiting Mode.......................................................................................................... 46
7.3.4 Shutdown Mode...................................................................................................... 47
7.2.1 Set the Communication Address.......................................................................... 45
7.4 LED and OLED Display Panel..................................................................................... 48
6.5.2 External Communication Connection ................................................................ 35
8 Monitoring ........................................................................................... 51
8.1 Remote Monitoring................................................................................................... 51
8.1.2 .................................................. 54Remote Monitoring on the APP (ShinePhone)
7.3.2 Operating Mode ..................................................................................................... 46
8.1.3 .......................................... 70Remote Monitoring on the ShineServer Webpage
7.2.2 Set the Time and Date ............................................................................................ 45
7.3 Mode of operation..................................................................................................... 46
9 System Maintenance.......................................................................... 91
8.1.1 Connect the WIT inverter to the internet on ShineTools................................ 51
9.1.1 Clean the Chassis .................................................................................................... 91
9.1.2 Fan Maintenance .................................................................................................... 91
6.5.4 Monitoring Device Terminal................................................................................. 40
9.2 Troubleshooting......................................................................................................... 93
6.5.3 Parallel Communication Connection.................................................................. 37
6.6 Post-installation Checks ........................................................................................... 42
7 Commissioning .................................................................................... 44
7.3.3 Fault Mode ............................................................................................................... 47
9.1 Routine Maintenance................................................................................................ 91
10 Product specifications ................................................................... 104
Table 10.1 WIT 50/63/75/100K-A-US specification ................................................... 104
9.2.1 Warning.................................................................................................................... 93
9.2.2 Error .......................................................................................................................... 98
Table 10.2 WIT 50/63/75/100K-H-US specification ................................................... 107
Table 10.4 WIT 50/63/75/100K-HU-US specification .............................................. 113
11 Decommissioning the WIT Inverter ............................................ 117
13 Contact Us ........................................................................................ 119
12 Warranty .......................................................................................... 118
Table 10.3 WIT 50/63/75/100K-AU-US specification .............................................. 110
12.2 Disclaimer ............................................................................................................. 118
12.1 Conditions ............................................................................................................ 118
1 Notes on this manual
1.1 Introduction
This manual is intended to introduce the WIT 50-100K-US 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 further 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.
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 866-686-0298.
1
2
1.3 Product Range
The WIT 50-100K-US (277V/480V) inverters consist of four models, each offering four
power options: 50kW, 63kW, 75kW, and 100kW. In total, there are 16 products available
in this series. This manual is valid for the following models:
WIT 50K-A-US
Three-phase Storage
Inverter
WIT 50K-H-US
Three-phase Hybrid
Inverter
WIT 63K-A-US
WIT 63K-H-US
WIT 75K-A-US
WIT 75K-H-US
WIT 100K-A-US
WIT 100K-H-US
WIT 50K-AU-US
Three-phase Storage
Inverter with UPS
function
WIT 50K-HU-US
Three-phaseHybrid
Inverter with UPS
function
WIT 63K-AU-US
WIT 63K-HU-US
WIT 75K-AU-US
WIT 75K-HU-US
WIT 100K-AU-US
WIT 100K-HU-US
Table 1.1 WIT 50-100K-US Series Models Product model introduction
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 can 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.
6) Before operating the WIT Inverter in the on-grid mode, ensure that you have obtained
any permission needed from the local grid operator.
5) Only designated personnel are permitted to perform maintenance on the inverter.
ŸRisk of injury when lifting the WIT Inverter, or injury caused by a
falling inverter as it is heavy. Please transport and lift the inverter
carefully.
ŸPlease read this manual carefully before installation. Damages
caused by failure to observe instructions specified in this manual are
not covered under any warranty.
ŸDo not connect any cables before installation.
ŸPlease observe the installation instructions specified in this manual,
including the installation environment and clearance requirements.
ŸInstall the WIT Inverter in a dry and well-ventilated location;
otherwise, performance de-rate may be initiated due to excessive
temperature.
ŸPlease read the installation instructions and safety precautions
carefully before installation.
Transportation:
Installation:
“WIT” refers to the product name. “50-100K” refers to the power range. The WIT
inverters include both Storage Inverter models and Hybrid Inverter models.
Note:
ŸIt must be operated by qualified and trained electrical technicians.
Technicians should observe instructions in this manual and local
regulations.
ŸBefore connecting cables, ensure that the DC switches of the WIT
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.
ŸHigh voltages may cause electric shocks and serious injury. Please do
not touch the WIT Inverter in operation.
ŸDo not install the inverter in potentially explosive and flammable
atmospheres.
Electrical Connections:
WARNING
DANGER
NOTICE
WARNING
DANGER
1 Notes on this manual
1.1 Introduction
This manual is intended to introduce the WIT 50-100K-US 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 further 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.
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 866-686-0298.
1
2
1.3 Product Range
The WIT 50-100K-US (277V/480V) inverters consist of four models, each offering four
power options: 50kW, 63kW, 75kW, and 100kW. In total, there are 16 products available
in this series. This manual is valid for the following models:
WIT 50K-A-US
Three-phase Storage
Inverter
WIT 50K-H-US
Three-phase Hybrid
Inverter
WIT 63K-A-US
WIT 63K-H-US
WIT 75K-A-US
WIT 75K-H-US
WIT 100K-A-US
WIT 100K-H-US
WIT 50K-AU-US
Three-phase Storage
Inverter with UPS
function
WIT 50K-HU-US
Three-phaseHybrid
Inverter with UPS
function
WIT 63K-AU-US
WIT 63K-HU-US
WIT 75K-AU-US
WIT 75K-HU-US
WIT 100K-AU-US
WIT 100K-HU-US
Table 1.1 WIT 50-100K-US Series Models Product model introduction
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 can 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.
6) Before operating the WIT Inverter in the on-grid mode, ensure that you have obtained
any permission needed from the local grid operator.
5) Only designated personnel are permitted to perform maintenance on the inverter.
ŸRisk of injury when lifting the WIT Inverter, or injury caused by a
falling inverter as it is heavy. Please transport and lift the inverter
carefully.
ŸPlease read this manual carefully before installation. Damages
caused by failure to observe instructions specified in this manual are
not covered under any warranty.
ŸDo not connect any cables before installation.
ŸPlease observe the installation instructions specified in this manual,
including the installation environment and clearance requirements.
ŸInstall the WIT Inverter in a dry and well-ventilated location;
otherwise, performance de-rate may be initiated due to excessive
temperature.
ŸPlease read the installation instructions and safety precautions
carefully before installation.
Transportation:
Installation:
“WIT” refers to the product name. “50-100K” refers to the power range. The WIT
inverters include both Storage Inverter models and Hybrid Inverter models.
Note:
ŸIt must be operated by qualified and trained electrical technicians.
Technicians should observe instructions in this manual and local
regulations.
ŸBefore connecting cables, ensure that the DC switches of the WIT
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.
ŸHigh voltages may cause electric shocks and serious injury. Please do
not touch the WIT Inverter in operation.
ŸDo not install the inverter in potentially explosive and flammable
atmospheres.
Electrical Connections:
WARNING
DANGER
NOTICE
WARNING
DANGER
ŸAfter turning off the DC switches and the AC breakers, wait for at
least five minutes before performing any operations to avoid risks.
ŸWhen the OLED screen indicates “PV Isolation low,” do not touch the
chassis as a ground fault may have been detected.
ŸBeware of high voltages which may cause electric shocks.
ŸIt must be operated by qualified and trained electrical technicians.
Technicians should observe instructions in this manual and local
regulations.
ŸTo ensure good dissipation, clean the fan regularly.
ŸDo not use the air pump to clean the fan. Otherwise, the fan may be
damaged.
ŸEach WIT Inverter must be equipped with an AC circuit breaker.
Multiple WIT Inverters cannot connect to the same AC circuit breaker.
ŸIf the cable is thick, do not shake the cable terminals after tightening
them. Otherwise, the loose connection may cause overheating and
device damage. Ensure that the terminals are properly connected
before starting the WIT Inverter.
ŸEnsure the correct polarity of the terminals before connecting the PV
array to the WIT Inverter.
ŸDo not connect the load between the WIT Inverter and the circuit
breaker.
Maintenance and replacement:
2.2 Symbol Conventions
Symbol
Description
DANGER indicates a hazard with a high level of risk which, if not
avoided, will result in death or serious injury.
WARNING indicates a potentially hazardous situation which, if not
avoided, could result in death or serious injury.
ŸUpon receiving the product, check if the contents are intact and
complete. If any damage is found or any component is missing, please
contact your distributor.
ŸThe maximum PV input voltage cannot exceed 1100V. The battery
input voltage cannot exceed 1000V.
ŸFor the WIT Inverter that will not be put into operation in the future,
you should properly dispose of them by yourself.
Others:
Symbol
Description
CAUTION indicates a hazard with potential risk which, if not avoided,
could result in minor or moderate injury.
NOTICE indicates that under certain circumstances, improper
operations could result in property damage.
Remind operators to check the instructions before installing or
operating the WIT Inverter.
2.3 Label Description
Symbol
Name
Meaning
High voltage
High voltages exist after the WIT Inverter is
powered on. Only qualified and trained electrical
technicians are allowed to perform operations.
Burn warning
Do not touch a running inverter because it
generates high temperatures on the shell.
Grounding
Indicates the position for connecting the PE
cable.
Delay discharge
mark
Residual voltage exists after the WIT Inverter is
powered off. It takes 5 minutes to discharge to
the safe voltage.
Refer to the
manual
Remind operators to refer to the manual before
installing and operating the WIT Inverter.
DC
Direct Current.
AC
Alternating Current.
3
4
WARNING
DANGER
WARNING
WARNING
DANGER
WARNING
CAUTION
NOTICE
ŸAfter turning off the DC switches and the AC breakers, wait for at
least five minutes before performing any operations to avoid risks.
ŸWhen the OLED screen indicates “PV Isolation low,” do not touch the
chassis as a ground fault may have been detected.
ŸBeware of high voltages which may cause electric shocks.
ŸIt must be operated by qualified and trained electrical technicians.
Technicians should observe instructions in this manual and local
regulations.
ŸTo ensure good dissipation, clean the fan regularly.
ŸDo not use the air pump to clean the fan. Otherwise, the fan may be
damaged.
ŸEach WIT Inverter must be equipped with an AC circuit breaker.
Multiple WIT Inverters cannot connect to the same AC circuit breaker.
ŸIf the cable is thick, do not shake the cable terminals after tightening
them. Otherwise, the loose connection may cause overheating and
device damage. Ensure that the terminals are properly connected
before starting the WIT Inverter.
ŸEnsure the correct polarity of the terminals before connecting the PV
array to the WIT Inverter.
ŸDo not connect the load between the WIT Inverter and the circuit
breaker.
Maintenance and replacement:
2.2 Symbol Conventions
Symbol
Description
DANGER indicates a hazard with a high level of risk which, if not
avoided, will result in death or serious injury.
WARNING indicates a potentially hazardous situation which, if not
avoided, could result in death or serious injury.
ŸUpon receiving the product, check if the contents are intact and
complete. If any damage is found or any component is missing, please
contact your distributor.
ŸThe maximum PV input voltage cannot exceed 1100V. The battery
input voltage cannot exceed 1000V.
ŸFor the WIT Inverter that will not be put into operation in the future,
you should properly dispose of them by yourself.
Others:
Symbol
Description
CAUTION indicates a hazard with potential risk which, if not avoided,
could result in minor or moderate injury.
NOTICE indicates that under certain circumstances, improper
operations could result in property damage.
Remind operators to check the instructions before installing or
operating the WIT Inverter.
2.3 Label Description
Symbol
Name
Meaning
High voltage
High voltages exist after the WIT Inverter is
powered on. Only qualified and trained electrical
technicians are allowed to perform operations.
Burn warning
Do not touch a running inverter because it
generates high temperatures on the shell.
Grounding
Indicates the position for connecting the PE
cable.
Delay discharge
mark
Residual voltage exists after the WIT Inverter is
powered off. It takes 5 minutes to discharge to
the safe voltage.
Refer to the
manual
Remind operators to refer to the manual before
installing and operating the WIT Inverter.
DC
Direct Current.
AC
Alternating Current.
3
4
WARNING
DANGER
WARNING
WARNING
DANGER
WARNING
CAUTION
NOTICE
3 Product Description
3.1 Overview
6
Front view:
Fig 3.1 Front view
Fig 3.2 Bottom view
Left view:
Fig 3.3 Left view of WIT 50-100K-A-US and WIT 50-100K-H-US
Fig 3.4 Left view of WIT 50-100K-AU-US and WIT 50-100K-HU-US
5
Bottom view:
The front view and the bottom view of all models are identical.
A
B
C
E
D
F
R
R
E
D
F
R
R
NOTICE
3 Product Description
3.1 Overview
6
Front view:
Fig 3.1 Front view
Fig 3.2 Bottom view
Left view:
Fig 3.3 Left view of WIT 50-100K-A-US and WIT 50-100K-H-US
Fig 3.4 Left view of WIT 50-100K-AU-US and WIT 50-100K-HU-US
5
Bottom view:
The front view and the bottom view of all models are identical.
A
B
C
E
D
F
R
R
E
D
F
R
R
NOTICE
Right view:
8
7
Fig 3.5 Right view of WIT 50-100K-A-US, WIT 50-100K-AU-US
Fig 3.6 Right view of WIT 50-100K-H-US and WIT 50-100K-HU-US
No.
Description
No.
Description
A
Display
B
AC junction box
C
Base
D
Power grid connection terminal
E
Load wiring terminal
F
Heat sink
G
Nameplate
H
Fan
I
16-pin terminal (BMS COM)
J
30 pin terminal (COM2)
K
16-pin terminal (COM1)
L
Communication port
M
DC Switch
N
PV terminal
O
Battery supply terminal (BMS AC)
P
Battery terminal
Q
DRMS port
R
Flexible handle (4 groups)
S
Fixed handle
T
Indicator description label
Table 3.1 Component description
3.2 Basic Data
Model
Size（in)
(Lb)
Weight
Height
Width
Depth
The WIT
Inverter
without
package
WIT 50/63/75/100K-A-US
53.2
33.5
20.1
265/265/265/265
WIT 50/63/75/100K-H-US
294/294/309/309
WIT 50/63/75/100K-AU-US
309/309/309/309
WIT 50/63/75/100K-HU-US
338/338/353/353
The WIT
Inverter
with
package
WIT 50/63/75/100K-A-US
60.0
38.9
28.9
353/353/353/353
WIT 50/63/75/100K-H-US
382/382/397/397
WIT 50/63/75/100K-AU-US
397/397/397/397
WIT 50/63/75/100K-HU-US
426/426/441/441
Table 3.2 Dimensions and weight
TH
I
J
K
L
H
G
R
O
P
S
R
Q
R
G
I
J
K
L
M
N
S
Q
P
O
R
H
H
T
barycenter
53.2
33.5
20.1
Unit: inch
Fig 3.7
Right view:
8
7
Fig 3.5 Right view of WIT 50-100K-A-US, WIT 50-100K-AU-US
Fig 3.6 Right view of WIT 50-100K-H-US and WIT 50-100K-HU-US
No.
Description
No.
Description
A
Display
B
AC junction box
C
Base
D
Power grid connection terminal
E
Load wiring terminal
F
Heat sink
G
Nameplate
H
Fan
I
16-pin terminal (BMS COM)
J
30 pin terminal (COM2)
K
16-pin terminal (COM1)
L
Communication port
M
DC Switch
N
PV terminal
O
Battery supply terminal (BMS AC)
P
Battery terminal
Q
DRMS port
R
Flexible handle (4 groups)
S
Fixed handle
T
Indicator description label
Table 3.1 Component description
3.2 Basic Data
Model
Size（in)
(Lb)
Weight
Height
Width
Depth
The WIT
Inverter
without
package
WIT 50/63/75/100K-A-US
53.2
33.5
20.1
265/265/265/265
WIT 50/63/75/100K-H-US
294/294/309/309
WIT 50/63/75/100K-AU-US
309/309/309/309
WIT 50/63/75/100K-HU-US
338/338/353/353
The WIT
Inverter
with
package
WIT 50/63/75/100K-A-US
60.0
38.9
28.9
353/353/353/353
WIT 50/63/75/100K-H-US
382/382/397/397
WIT 50/63/75/100K-AU-US
397/397/397/397
WIT 50/63/75/100K-HU-US
426/426/441/441
Table 3.2 Dimensions and weight
TH
I
J
K
L
H
G
R
O
P
S
R
Q
R
G
I
J
K
L
M
N
S
Q
P
O
R
H
H
T
barycenter
53.2
33.5
20.1
Unit: inch
Fig 3.7
3.3 Nameplate
Fig 3.8 Nameplate
10
9
3.4 Operating Principle
3.4.1 Operating Principle of WIT 50-100K-A-US
1> Converts DC power into AC power consistent with the voltage and power quality
requirements of the utility grid through an inverter circuit to supply power to the loads
and feed power into the grid;
2> Converts AC power into DC power through a rectifying circuit to charge the battery.
Fig 3.9 WIT 50-100K-A-US Grid-connected conceptual diagram
3.4.2 Operating Principle of WIT 50-100K-H-US
2> The PV strings can put out power to charge the battery through the MPPT routes;
1> The hybrid inverter receives DC inputs form the PV strings which go through the MPPT
routes. The DC power is then converted to AC power through an inverter circuit to
power the loads and feed power into the grid;
3> Convert battery power to AC power supplies for the loads and feeding to the grid;
4> Charge the battery from the grid through a rectifier circuit.
BAT+
BAT-
DC Relay DC Link DC/AC
Unit AC Relay
GRID
NOTE: WIT 50K-H-US models have 7 MPPT routes. WIT 63K-H-US models have 8 MPPT
routes. WIT 75K-H-US and WIT 100K-H-US models have 10 MPPT routes.
Fig 3.10 WIT 50-100K-H-US Grid-connected conceptual diagram
DC SPD AC SPD
R
S
T
N
GRID
NOTE: The figure above shows the nameplate of WIT 100K-HU-US as an example. The
nameplate figure is for reference only. The actual nameplate prevails. For the specifications,
please refer to Section 10 Product Specifications.
3.3 Nameplate
Fig 3.8 Nameplate
10
9
3.4 Operating Principle
3.4.1 Operating Principle of WIT 50-100K-A-US
1> Converts DC power into AC power consistent with the voltage and power quality
requirements of the utility grid through an inverter circuit to supply power to the loads
and feed power into the grid;
2> Converts AC power into DC power through a rectifying circuit to charge the battery.
Fig 3.9 WIT 50-100K-A-US Grid-connected conceptual diagram
3.4.2 Operating Principle of WIT 50-100K-H-US
2> The PV strings can put out power to charge the battery through the MPPT routes;
1> The hybrid inverter receives DC inputs form the PV strings which go through the MPPT
routes. The DC power is then converted to AC power through an inverter circuit to
power the loads and feed power into the grid;
3> Convert battery power to AC power supplies for the loads and feeding to the grid;
4> Charge the battery from the grid through a rectifier circuit.
BAT+
BAT-
DC Relay DC Link DC/AC
Unit AC Relay
GRID
NOTE: WIT 50K-H-US models have 7 MPPT routes. WIT 63K-H-US models have 8 MPPT
routes. WIT 75K-H-US and WIT 100K-H-US models have 10 MPPT routes.
Fig 3.10 WIT 50-100K-H-US Grid-connected conceptual diagram
DC SPD AC SPD
R
S
T
N
GRID
NOTE: The figure above shows the nameplate of WIT 100K-HU-US as an example. The
nameplate figure is for reference only. The actual nameplate prevails. For the specifications,
please refer to Section 10 Product Specifications.
1211
3.4.3 Operating Principle of WIT 50-100K-AU-US
Fig 3.11 WIT 50-100K-AU-US Grid-connected conceptual diagram
1> Converts battery power to AC power to power the loads and export energy to the grid;
2> Charges the battery from the grid through a rectifier circuit;
3> Converts the battery power into AC power through the inverter circuit to provide
power to critical loads connected to the LOAD port.
3.4.4 Operating Principle of WIT 50-100K-HU-US
1> The hybrid inverter receives DC inputs from PV strings which go through the MPPT
routes. The DC power is then converted into AC power through the inverter circuit to
power the loads and power is fed into the grid;
2> The PV strings can supply power to charge the battery through the MPPT routes;
4> Charges the battery from the grid through a rectifier circuit;
3> Can convert battery power to AC power supplies for the loads and feeds into the grid;
5> Converts the DC power from PV strings and the battery power into AC power through
the inverter circuit to power critical loads.
Fig 3.12 WIT 50-100K-HU-US Grid-connected conceptual diagram
NOTE: WIT 50K-HU-US models have 7 MPPT routes. WIT 63K-HU-US models have 8 MPPT
routes. WIT 75K-HU-US and WIT 100K-HU-US models have 10 MPPT routes.
3.5 Storing the WIT Inverter
1> Place the WIT Inverter in the original package and store it in a dry and well-ventilated
place.
2> Keep the storage temperature from –22°F to +158°F and the humidity from 0%–95%
RH.
4> If the WIT Inverter has been long-term stored, inspections and tests should be
conducted by qualified personnel before installation.
3> A maximum of three WIT Inverters can be stacked. Do not stack the inverters without
packaging.
Wrong time and date settings may occur if the WIT Inverter has been
stored for over one month. Fix the time and date before connecting the
inverter to the grid. For details, see 7.1 Commissioning the WIT
Inverter.
3.6 Supported Grid Types
Fig 3.13 480V system(type Y/△)
3.7 AFCI Function
An AFCI, or Arc-Fault Circuit Interrupter, is a solution designed to detect and mitigate the
risk of electrical arcing in a photovoltaic (PV) system, supported by an intelligent arc
detection algorithm. Arcing can occur when there is a high voltage breakdown in the
electrical insulation or when conductive materials come into contact with each other.
This can pose a fire hazard and damage system components. The AFCI continuously
monitors the system for potential arc faults and if detected, interrupts the circuit to
prevent a fire or other damage. AFCIs are required by the National Electrical Code (NEC)
in certain parts of a PV system, such as the DC side of the inverter, to improve safety and
reduce the risk of fires.
Grid connection modes for WIT 50-100K-US Storage/Hybrid Inverters are shown in Fig 3.12.
PV1
BAT
PV10
3.7.1 AFCI function description
2. Do not wire the Maximum Power Point Trackers (MPPTs) on the DC side in parallel as it
might trigger the AFCI mistakenly.
NOTE:
1. The AFCI function of the WIT Inverter is enabled by default.
480V
480V
480V
277V
BAT+
BAT-
DC Relay DC Link DC/AC
Unit
AC Relay
GRID
ATS Relay
DC SPD AC SPD
277V
N
277V
277V
3P4W 3P3W
480V
480V
480V
1211
3.4.3 Operating Principle of WIT 50-100K-AU-US
Fig 3.11 WIT 50-100K-AU-US Grid-connected conceptual diagram
1> Converts battery power to AC power to power the loads and export energy to the grid;
2> Charges the battery from the grid through a rectifier circuit;
3> Converts the battery power into AC power through the inverter circuit to provide
power to critical loads connected to the LOAD port.
3.4.4 Operating Principle of WIT 50-100K-HU-US
1> The hybrid inverter receives DC inputs from PV strings which go through the MPPT
routes. The DC power is then converted into AC power through the inverter circuit to
power the loads and power is fed into the grid;
2> The PV strings can supply power to charge the battery through the MPPT routes;
4> Charges the battery from the grid through a rectifier circuit;
3> Can convert battery power to AC power supplies for the loads and feeds into the grid;
5> Converts the DC power from PV strings and the battery power into AC power through
the inverter circuit to power critical loads.
Fig 3.12 WIT 50-100K-HU-US Grid-connected conceptual diagram
NOTE: WIT 50K-HU-US models have 7 MPPT routes. WIT 63K-HU-US models have 8 MPPT
routes. WIT 75K-HU-US and WIT 100K-HU-US models have 10 MPPT routes.
3.5 Storing the WIT Inverter
1> Place the WIT Inverter in the original package and store it in a dry and well-ventilated
place.
2> Keep the storage temperature from –22°F to +158°F and the humidity from 0%–95%
RH.
4> If the WIT Inverter has been long-term stored, inspections and tests should be
conducted by qualified personnel before installation.
3> A maximum of three WIT Inverters can be stacked. Do not stack the inverters without
packaging.
Wrong time and date settings may occur if the WIT Inverter has been
stored for over one month. Fix the time and date before connecting the
inverter to the grid. For details, see 7.1 Commissioning the WIT
Inverter.
3.6 Supported Grid Types
Fig 3.13 480V system(type Y/△)
3.7 AFCI Function
An AFCI, or Arc-Fault Circuit Interrupter, is a solution designed to detect and mitigate the
risk of electrical arcing in a photovoltaic (PV) system, supported by an intelligent arc
detection algorithm. Arcing can occur when there is a high voltage breakdown in the
electrical insulation or when conductive materials come into contact with each other.
This can pose a fire hazard and damage system components. The AFCI continuously
monitors the system for potential arc faults and if detected, interrupts the circuit to
prevent a fire or other damage. AFCIs are required by the National Electrical Code (NEC)
in certain parts of a PV system, such as the DC side of the inverter, to improve safety and
reduce the risk of fires.
Grid connection modes for WIT 50-100K-US Storage/Hybrid Inverters are shown in Fig 3.12.
PV1
BAT
PV10
3.7.1 AFCI function description
2. Do not wire the Maximum Power Point Trackers (MPPTs) on the DC side in parallel as it
might trigger the AFCI mistakenly.
NOTE:
1. The AFCI function of the WIT Inverter is enabled by default.
480V
480V
480V
277V
BAT+
BAT-
DC Relay DC Link DC/AC
Unit
AC Relay
GRID
ATS Relay
DC SPD AC SPD
277V
N
277V
277V
3P4W 3P3W
480V
480V
480V
3.8 Anti-PID Function
PID (Potential Induced Degradation) typically occurs in PV systems where there is a voltage
potential between the solar cells and the grounded frame or other conductive elements of
the system. This potential difference, combined with high humidity and temperature, can
lead to leakage currents that degrade the performance of the solar modules over time.
The Anti-PID function integrated in Growatt inverters can effectively reverse the PID effect
by applying DC voltage to the PV modules during nighttime, enhancing solar energy
harvest and performance.
14
13
Inspection upon delivery 4
2. After unpacking the WIT Inverter, check if the scope of delivery is intact and complete.
If any damage is found or any component is missing, contact your distributor.
1. Before unpacking the WIT Inverter, check the shipping box for any externally visible
damage. If damage is found, contact the shipping company as soon as possible.
Unpacking and inspection
Fig 4.1 Packing list of WIT 50-100K-A-US and WIT 50-100K-AU-US
Fig 4.2 Packing list of WIT 50-100K-H-US and WIT 50-100K-HU-US
3.7.2 Clearing the alarm
In the event that the WIT Inverter reports “Error 200” and the PV indicator turns red, an
arc fault might have been detected. Please perform the following steps to clear the alarm.
Step 1: Disconnect the WIT inverter from all power sources. Turn off the battery switch
and the AC output circuit breaker, then turn the DC switches to the OFF position.
Wait until the error message disappears.
Fig 3.14
Step 2: Troubleshooting: Check if the open-circuit of all PV strings are within the
permissible range.
Step 3: After the fault is cleared, restart the inverter. Turn on the battery switch and the
AC breaker, and turn the DC switch to the ON position. Wait until the system is
working properly.
Fig 3.15
If the WIT Inverter passes the AFCI self-test, it will work in the normal mode and the PV
indicator will be green. If it fails, the inverter will report “Error 425”. In this case, please
reboot the system and perform Step 1 to Step 3. If it fails again, please disconnect all
power sources and contact Growatt support.
Check the following items:
UserManual
Quick
installation
manual
DEFGH
IJK
ALM
BCDEFG
IH JK
ALM
UserManual
Quick
installation
manual
No.
Description
Quantity
A
The WIT Inverter
1
B
PV+ connector, PV - connector
20/20
C
PV+ metal contact, PV- metal contact
20/20
D
Battery + terminal, Battery - terminal
1/1
E
16-pin terminal
2
Table 4.1 Packing list
DC SWITCH 1
OFF
ON
DC SWITCH 1
OFF
ON
DC SWITCH 1
OFF
ON
DC SWITCH 1
OFF
ON
3.8 Anti-PID Function
PID (Potential Induced Degradation) typically occurs in PV systems where there is a voltage
potential between the solar cells and the grounded frame or other conductive elements of
the system. This potential difference, combined with high humidity and temperature, can
lead to leakage currents that degrade the performance of the solar modules over time.
The Anti-PID function integrated in Growatt inverters can effectively reverse the PID effect
by applying DC voltage to the PV modules during nighttime, enhancing solar energy
harvest and performance.
14
13
Inspection upon delivery 4
2. After unpacking the WIT Inverter, check if the scope of delivery is intact and complete.
If any damage is found or any component is missing, contact your distributor.
1. Before unpacking the WIT Inverter, check the shipping box for any externally visible
damage. If damage is found, contact the shipping company as soon as possible.
Unpacking and inspection
Fig 4.1 Packing list of WIT 50-100K-A-US and WIT 50-100K-AU-US
Fig 4.2 Packing list of WIT 50-100K-H-US and WIT 50-100K-HU-US
3.7.2 Clearing the alarm
In the event that the WIT Inverter reports “Error 200” and the PV indicator turns red, an
arc fault might have been detected. Please perform the following steps to clear the alarm.
Step 1: Disconnect the WIT inverter from all power sources. Turn off the battery switch
and the AC output circuit breaker, then turn the DC switches to the OFF position.
Wait until the error message disappears.
Fig 3.14
Step 2: Troubleshooting: Check if the open-circuit of all PV strings are within the
permissible range.
Step 3: After the fault is cleared, restart the inverter. Turn on the battery switch and the
AC breaker, and turn the DC switch to the ON position. Wait until the system is
working properly.
Fig 3.15
If the WIT Inverter passes the AFCI self-test, it will work in the normal mode and the PV
indicator will be green. If it fails, the inverter will report “Error 425”. In this case, please
reboot the system and perform Step 1 to Step 3. If it fails again, please disconnect all
power sources and contact Growatt support.
Check the following items:
UserManual
Quick
installation
manual
DEFGH
IJK
ALM
BCDEFG
IH JK
ALM
UserManual
Quick
installation
manual
No.
Description
Quantity
A
The WIT Inverter
1
B
PV+ connector, PV - connector
20/20
C
PV+ metal contact, PV- metal contact
20/20
D
Battery + terminal, Battery - terminal
1/1
E
16-pin terminal
2
Table 4.1 Packing list
DC SWITCH 1
OFF
ON
DC SWITCH 1
OFF
ON
DC SWITCH 1
OFF
ON
DC SWITCH 1
OFF
ON
No.
Description
Quantity
F
30-pin terminal
1
G
Antenna
1 or 2
H
RJ45 connector protector
1 or 2
I
BMS power supply terminal
1
J
User manual
1
K
Quick installation guide
1
L
Hoist ring
2
M
RSD and accessories
1
NOTE:
1. For the WIT 50-100K-H-US and WIT 50-100K-HU-US inverters please reference the
table below for the list PV terminal equipment and Metal Contacts based on the
inverter's size.
16
15
Installation 5
5.1 Basic Installation Requirements
G. Keep the ambient temperature at -13°F to +140°F.
F. Keep the humidity at 0% to 95% RH.
A. Ensure that the installation surface is solid enough to bear the weight of the WIT
Inverter. (Refer to Table 3.2 for the weight of the WIT Inverter)
B. Ensure that the installation position is suitable for the dimensions of the WIT Inverter.
D. The WIT Inverter is protected to IP66/Type 4X and can be installed indoors or outdoors.
E. Do not expose the WIT Inverter to direct sunlight. Otherwise, excessive temperature
may lead to power reduction.
C. Do not install the WIT Inverter in areas with flammable or thermolabile materials.
H. The WIT inverter can only be vertically mounted on a flat ground or a vertical wall.
Please refer to the following figures:
Fig 5.1
I. Reserve enough clearance around the WIT Inverter to ensure sufficient space for heat
dissipation and operation. Ensure that there are no objects within 40 inches of the left,
right and top of the WIT Inverter; In ground-mounted installation, keep the back of the
chassis at least 4 inches away from the wall surface to ensure the performance of the
WIT Inverter.
Fig 5.2
Inverter Model
PV Terminals
Metal Contacts
50kW Models
14 pairs
14 pairs
63kW Models
16 pairs
16 pairs
75kW and 100kW Models
20 pairs
20 pairs
2. For remote monitoring, if the WiFi&LAN datalogger is selected, one antenna (WiFi) and
two RJ45 connectors are provided; if the WiFi&4G datalogger is selected, two antennas
(WiFi and 4G) and one RJ45 connector are provided.
3. Models with the RSD function are delivered with the "M" component.
4. Sturdy and durable though the packing is, please carry and handle it with caution.
40 inch
4 inch
4 inch
40 inch
40 inch
No.
Description
Quantity
F
30-pin terminal
1
G
Antenna
1 or 2
H
RJ45 connector protector
1 or 2
I
BMS power supply terminal
1
J
User manual
1
K
Quick installation guide
1
L
Hoist ring
2
M
RSD and accessories
1
NOTE:
1. For the WIT 50-100K-H-US and WIT 50-100K-HU-US inverters please reference the
table below for the list PV terminal equipment and Metal Contacts based on the
inverter's size.
16
15
Installation 5
5.1 Basic Installation Requirements
G. Keep the ambient temperature at -13°F to +140°F.
F. Keep the humidity at 0% to 95% RH.
A. Ensure that the installation surface is solid enough to bear the weight of the WIT
Inverter. (Refer to Table 3.2 for the weight of the WIT Inverter)
B. Ensure that the installation position is suitable for the dimensions of the WIT Inverter.
D. The WIT Inverter is protected to IP66/Type 4X and can be installed indoors or outdoors.
E. Do not expose the WIT Inverter to direct sunlight. Otherwise, excessive temperature
may lead to power reduction.
C. Do not install the WIT Inverter in areas with flammable or thermolabile materials.
H. The WIT inverter can only be vertically mounted on a flat ground or a vertical wall.
Please refer to the following figures:
Fig 5.1
I. Reserve enough clearance around the WIT Inverter to ensure sufficient space for heat
dissipation and operation. Ensure that there are no objects within 40 inches of the left,
right and top of the WIT Inverter; In ground-mounted installation, keep the back of the
chassis at least 4 inches away from the wall surface to ensure the performance of the
WIT Inverter.
Fig 5.2
Inverter Model
PV Terminals
Metal Contacts
50kW Models
14 pairs
14 pairs
63kW Models
16 pairs
16 pairs
75kW and 100kW Models
20 pairs
20 pairs
2. For remote monitoring, if the WiFi&LAN datalogger is selected, one antenna (WiFi) and
two RJ45 connectors are provided; if the WiFi&4G datalogger is selected, two antennas
(WiFi and 4G) and one RJ45 connector are provided.
3. Models with the RSD function are delivered with the "M" component.
4. Sturdy and durable though the packing is, please carry and handle it with caution.
40 inch
4 inch
4 inch
40 inch
40 inch
This manual suits for next models
15
Table of contents
Other Growatt Inverter manuals
Growatt
Growatt MIN 3K-11.4K TL-XH-US Operating instructions
Growatt
Growatt 2000-US User manual
Growatt
Growatt 2000HF User manual
Growatt
Growatt TL3-X Series User manual
Growatt
Growatt SPF 4KT HVM User manual
Growatt
Growatt UE Series User manual
Growatt
Growatt MID 17-25KTL3-X User manual
Growatt
Growatt MIN 7000TL-X2 User manual
Growatt
Growatt SPA TL3 BH-UP Series User manual
Growatt
Growatt MIN 2500TL-XA User manual
Growatt
Growatt Growatt 1500 User manual
Growatt
Growatt MID 17-40KTL3-X User manual
Growatt
Growatt MID TL3-XH Series User manual
Growatt
Growatt CP100 User manual
Growatt
Growatt MIC 750 TL-X User manual
Growatt
Growatt 10000UE User manual
Growatt
Growatt SPA 1000TL User manual
Growatt
Growatt 750-S User manual
Growatt
Growatt SPF 3500 ES User manual
Growatt
Growatt Growatt 4200 MTL User manual
