Goodwe SMT Series User manual

User Manual
Grid-Tied PV Inverter
SMT Series
V1.0-2022-08-30

I
Copyright StatementUser Manual V1.0-2022-08-30
The information in this user manual is subject to change due to product updates or other
reasons. This manual cannot replace the product labels or the safety precautions unless
otherwise specied. All descriptions in the manual are for guidance only.
Trademarks
Notice
and other GoodWe trademarks are trademarks of GoodWe Company.
All other trademarks or registered trademarks mentioned in this manual are owned by GoodWe
Technologies Co., Ltd.
No part of this manual can be reproduced or transmitted to the public platform in any form or
by any means without the prior written authorization of GoodWe Technologies Co., Ltd.
Copyright ©GoodWe Technologies Co., Ltd., 2022. All rights reserved

II
Content User Manual V1.0-2022-08-30
CONTENT
1 About This Manual ���������������������������������������������������������������������������� 1
1.1 Applicable Model ......................................................................................................................1
1.2 Target Audience ........................................................................................................................1
1.3 Symbol De󽗉nition ....................................................................................................................2
1.4 Updates ....................................................................................................................................2
2 IMPORTANT SAFETY INSTRUCTIONS �������������������������������������������������� 3
2.1 General Safety ..........................................................................................................................3
2.2 PV String Safety ........................................................................................................................3
2.3 Inverter Safety ..........................................................................................................................4
2.4 Personnel Requirements .........................................................................................................4
3 Product Introduction ������������������������������������������������������������������������ 5
3.1 Product Overview ....................................................................................................................5
3.2 Application Scenarios ..............................................................................................................6
3.3.3 Inverter operation mode .....................................................................................................10
3.4 Functionality ..........................................................................................................................11
3.5 Appearance ............................................................................................................................12
3.5.1 Parts ........................................................................................................................................................ 12
3.5.2 Dimensions .............................................................................................................................................13
3.5.3 Indicators................................................................................................................................................13
3.5.4 Nameplate ..............................................................................................................................................14
4 Check and Storage ��������������������������������������������������������������������������15
4.1 Check Before Receiving .........................................................................................................15
4.2 Deliverables ............................................................................................................................15
4.3 Storage ...................................................................................................................................16
5 Installation ��������������������������������������������������������������������������������������17
5.1 Installation Requirements .....................................................................................................17
5.2 Inverter Installation ...............................................................................................................20
5.2.1 Moving the Inverter ................................................................................................................................ 20
5.2.2 Installing the Inverter.............................................................................................................................20
6 Electrical Connection �����������������������������������������������������������������������23
6.1 Safety Precaution ...................................................................................................................23
6.2 Preparations Before Cable Connections ...............................................................................24
6.2.1 Connection Unit Introduction ...............................................................................................................24
6.2.2 Conduit Hole Dimensions ......................................................................................................................24
6.3 Removing the Enclosure Cover .............................................................................................25
6.4 (Optional) Connecting the PE Cable .....................................................................................26
6.5 Connecting the DC Input Cable(PV) ......................................................................................26

III
ContentUser Manual V1.0-2022-08-30
6.6 Connecting the AC Cable ....................................................................................................... 28
6.7 Connecting the Communication Cable ................................................................................. 31
6.8 Installing the WiFi Module ..................................................................................................... 33
6.9 Installing the USB Cable ........................................................................................................ 33
6.10 Opening the wiring cover ..................................................................................................... 34
7 Equipment Commissioning ���������������������������������������������������������������35
7.1 Check Before Power ON ......................................................................................................... 35
7.2 Power On ................................................................................................................................35
8 System Commissioning ��������������������������������������������������������������������36
8.1 Indicators and Buttons .......................................................................................................... 36
8.2 Setting Inverter Parameters via App ..................................................................................... 37
8.3 Monitoring via SEMS Portal ................................................................................................... 37
9 Maintenance �����������������������������������������������������������������������������������38
9.1 Power O󽗈 the Inverter ............................................................................................................ 38
9.2 Removing the Inverter ........................................................................................................... 38
9.3 Disposing of the Inverter ....................................................................................................... 38
9.4 Troubleshooting ..................................................................................................................... 39
9.5 Routine Maintenance ............................................................................................................. 46
10 Technical Parameters ���������������������������������������������������������������������47
11 Appendix ���������������������������������������������������������������������������������������50
11.1 Inverter Parameter Accuracy ................................................................................................ 50

1
User Manual V1.0-2022-08-30 01 About This Manual
1 About This Manual
This manual describes the product information, installation, electrical connection,
commissioning, troubleshooting, and maintenance. Read through this manual before installing
and operating the product. All the installers and users have to be familiar with the product
features, functions, and safety precautions. This manual is subject to update without notice. For
more product details and latest documents, visit www.goodwe.com.
1.1 Applicable Model
This manual applies to the listed inverters below (SMT for short):
1.2 Target Audience
This manual applies to trained and knowledgeable technical professionals. The technical
personnel has to be familiar with the product, local standards, and electric systems.
• GW50K-SMT-US
• GW60K-SMT-US

2
01 About This Manual User Manual V1.0-2022-08-30
1.3 Symbol Denition
1.4 Updates
The latest document contains all the updates made in earlier issues.
V1.0 2022-08-30
• First Issue
Dierent levels of warning messages in this manual are dened as follows:
DANGER
Indicates a high-level hazard that, if not avoided, will result in death or serious injury.
WARNING
Indicates a medium-level hazard that, if not avoided, could result in death or serious injury.
CAUTION
Indicates a low-level hazard that, if not avoided, could result in minor or moderate injury.
NOTICE
Highlight and supplement the texts. Or some skills and methods to solve product-related
problems to save time.

3
User Manual V1.0-2022-08-30 02 Safety Precaution
DANGER
Connect the DC cables using the delivered PV connectors and terminals. The manufacturer
shall not be liable for the equipment damage if other connectors or terminals are used.
WARNING
• Ensure the component frames and the bracket system are securely grounded.
• Ensure the DC cables are connected tightly, securely, and correctly.
• Measure the DC cable using the multimeter to avoid reverse polarity connection. Also, the
voltage should be under the max DC input voltage. The manufacturer shall not be liable for
the damage caused by reverse connection and extremely high voltage.
• Do not connect one PV string in one circuit to more than one inverter at the same time.
Otherwise, it may cause damages to the inverter.
2 IMPORTANT SAFETY INSTRUCTIONS
2.1 General Safety
2.2 PV String Safety
Notice
• The information in this user manual is subject to change due to product updates or other
reasons. This guide cannot replace the product labels or the safety precautions in the user
manual unless otherwise specied. All descriptions here are for guidance only.
• Before installations, read through the user manual to learn about the product and the
precautions.
• All installations should be performed by trained and knowledgeable technicians who are
familiar with local standards and safety regulations.
• Use insulating tools and wear personal protective equipment when operating the
equipment to ensure personal safety. Wear anti-static gloves, cloths, and wrist strips when
touching electron devices to protect the inverter from damage.
• Strictly follow the installation, operation, and conguration instructions in this manual.
The manufacturer shall not be liable for equipment damage or personal injury if you do
not follow the instructions. Visit https://en.goodwe.com/warranty to get more information
about product warranty.
Notice
The inverters are designed and tested strictly complies with related safety rules. Read and
follow all the safety instructions and cautions before any operations. Improper operation might
cause personal injury or property damage as the inverters are electrical equipment.
You shall follow all the safety precautions mentioned in this manual when working on the device.
SAVE THESE INSTRUCTIONS

4
02 Safety Precaution User Manual V1.0-2022-08-30
DANGER
• Do not apply mechanical load to the terminals, otherwise the terminals can be damaged.
• All labels and warning marks should be visible after the installation. Do not scrawl,
damage, or cover any label on the device.
• Warning labels on the inverter are as follows.
2.4 Personnel Requirements
Notice
• Personnel who install or maintain the equipment must be strictly trained, learn about
safety precautions and correct operations.
• Only qualied professionals or trained personnel are allowed to install, operate, maintain,
and replace the equipment or parts.
HIGH VOLTAGE HAZARD
Disconnect all incoming
power and turn o the
product before working on it.
Delayed discharge. Wait 5
minutes after power o until
the components are completely
discharged.
Read through the user
manual before any
operations.
Potential risks exist. Wear
proper PPE before any
operations.
High-temperature hazard. Do
not touch the product under
operation to avoid being
burnt.
Grounding point.
CSA marking for the United
States of America and Canada
Do not dispose of the inverter
as household waste. Discard
the product in compliance with
local laws and regulations,
or send it back to the
manufacturer.
300612
2.3 Inverter Safety
WARNING
• The voltage and frequency at the connecting point should meet the on-grid requirements.
• Additional protective devices like circuit breakers or fuses are recommended on the AC
side. Specication of the protective device should be at least 1.25 times the rated AC output
rated current.
• PE cable of the inverter must be connected rmly. Make sure that all the grounding points
on the enclosures are equipotential connected when there are multiple inverters.
• You are recommended to use copper cables as AC output cables. Contact the manufacturer
if you want to use other cables.
• The alarm can be cleared automatically if the inverter triggers a fault for less than 5
times within 24 hours. The inverter locks for protection after the 5th electric arc fault. The
inverter can operate normally after the fault is solved.

5
User Manual V1.0-2022-08-30 03 Product Introduction
3 Product Introduction
The SMT inverter is a three-phase PV string grid-tied inverter. The inverter converts the DC
power generated by the PV module into AC power and feeds it into the utility grid.
3.1 Product Overview
Model
Model description
This manual applies to the listed inverters below:
• GW50K-SMT-US
• GW60K-SMT-US
No. Referring to Explanation
1 Brand Code GW: GoodWe
2Rated Power • 50K: the rated power is 50kW.
• 60K: the rated power is 60kW.
3 Series SMT SMT Series
4Area Code US: North America

6
03 Product Introduction User Manual V1.0-2022-08-30
PV string &
rapid shutdown
module
Inverter
Circuit
Breaker
Power
Meter
Utility
Grid
Smart
meter
CT
Power cable Signal cable
No. Parts Description
1PV string & rapid
shutdown module
The rapid shutdown module is optional. The external receiver must match
with the integrated transmitter in the inverter.
2Inverter SMT series inverters.
3AC breaker It is recommended to use three phase AC breaker no less than 120A which
conforms to local regulations. Make sure the inverter can disconnect with the
grid safely under abnormal situations.
4 Smart meter The smart meter can be purchased from the manufacturer. Recommended
model: GM330.
5 CT It is recommended to use CT with specications: 150A: 5A; Level 0.2 in
precision, and 60Hz.
3.2 Application Scenarios
WARNING
• The anti reverse current functionality can be realized when the inverter is used together
with Smart Meter, which can be purchased from the inverter manufacturer. For detailed
Smart Meter operations, refer to GMK120&GMK140&GM330 Quick Installation Guide.
• The anti reverse current functionality is disabled in default. Set anti reverse current
parameters via APP if required. For detailed APP operations, refer to SolarGo User Manual.
• The password shall be typed when setting the anti reverse current functionality. Contact
the after-sale service for setting.
• The maximum operating currents in controlled busbars or conductors are limited by the
settings of the power control system (PCS) and may be lower than the sum of the currents
of the connected controlled power sources. The settings of the PCS controlled currents may
be used for calculation of the design currents used in the relevant sections of NEC Article
690 and 705.
• Maximum PCS Controlled Current setting: 150 A.
Strictly follow below requirements to realize anti reverse current:

7
User Manual V1.0-2022-08-30 03 Product Introduction
WARNING
• Only qualied personnel shall be permitted to set or change the setting of the maximum
operating current of the PCS. The maximum PCS operating current setting shall not exceed
the busbar rating or conductor ampacity of any PCS controlled busbar or conductor.
• Conguration of power control settings system or changes to settings shall be made by
qualied personnel only. Incorrect conguration or setting of the power control settings
may result in unsafe conditions.
Stick below tags on the body part of the product(s) in the system with anti-reverse current
functionality by yourselves:
PCS Controlled Current Tag Smart Meter or CT Description Tag
This sensor is part of a Power Control
System. Do not remove. Replace only with
same type and rating
PCS Controlled Current Setting: ____ A
The maximum operating current of this
system may be controlled electronically.
Refer to user manual for more information

8
03 Product Introduction User Manual V1.0-2022-08-30
Circuit Diagram
The circuit diagram of GW50K-SMT-US and GW60K-SMT-US is as follows.

9
User Manual V1.0-2022-08-30 03 Product Introduction
SMT series GW50K-SMT-US, and GW60K-SMT-US support four dierent types (TNS,TN-C,TN-C-S,
TT) of grid.
TN-S
L1
L2
L3
N
PE
PE
Transformer
Inverter
TN-C
Transformer
L1
L2
L3
PEN
PE
Inverter
TN-C-S
L1
L2
L3
N
PE
Transformer
PE
Inverter
TT
L1
L2
L3
N
Transformer
PE
Inverter
IT
L1
L2
L3
Transformer
PE
Inverter
When neutral wire of inverter is not connected to grid, "Delta Grid" should be selected in grid
type(IT) setting page.
Supported Grid Types

10
03 Product Introduction User Manual V1.0-2022-08-30
3.3.3 Inverter operation mode
Waiting mode Self-check mode
Grid-Tied modeFault mode
No. Parts Description
1 Waiting mode Waiting stage after the inverter is powered on.
• When the conditions are met, it enters the self-check
mode.
• If there is a fault, the inverter enters the fault mode.
2 Self-check mode Before the inverter starts up, it continuously performs self-
check, initialization, etc.
• When the conditions are met, it enters the grid-tied
mode, and the inverter starts on grid connection.
• If the self-check is not passed, it enters the fault mode.
3 Grid-Tied mode The inverter is grid-tied successfully.
If a fault is detected, it enters the fault mode.
4 Fault mode If a fault is detected, the inverter enters the fault mode.
When the fault is cleared, it enters the wait mode.

11
User Manual V1.0-2022-08-30 03 Product Introduction
3.4 Functionality
Power derating
AFCI
For a safe operation, the inverter will automatically reduce the output power when the operating
environment is not ideal.
The following are the factors that may occur power derating. Please try to avoid them during
usage.
• Unfavorable environmental conditions, e.g., direct sunlight, high temperature, etc.
• Inverter's output power percentage has been set.
• The voltage of the grid varies with the frequency.
• Higher input voltage value.
Reason for electric arcs:
• Damaged connectors in PV system
• Wrong connected or broken cables
• Aging connectors and cables
Method to detect electric arcs
• The inverter has an integrated AFCI function and meets UL/CSA (UL1699B) standards.
• When the inverter detects an electric arc, users can nd the time of the fault and the detailed
phenomenon through the app.
• The alarm can be cleared automatically if the inverter triggers a fault for less than 5 times
within 24 hours. The inverter will shutdown for protection after the 5th electric arc fault. The
inverter can operate normally after the fault is solved. Please refer to the Storage Mate App
User Manual for detailed operation.

12
03 Product Introduction User Manual V1.0-2022-08-30
3.5 Appearance
3.5.1 Parts
No. Parts Description
1 LED Indicator Indicate working status of the inverter.
2 Connection unit The compartment collects the input and output
cables of the inverter.
3Mounting Plate Hang the inverter on the wall.
4 Handles Install the inverter with the handles.
5 Fans Cool the inverter.
6Grounding Point (optional) Used to connect the PE cable
7AC Switch Start or stop AC Output
8 DC Switch Start or stop DC input
9DC input cable hole (PV1-PV6) Cable hole for connecting PV1-PV6 PV strings.
10 DC input cable hole (PV7-PV12) Cable hole for connecting PV7-PV12 PV strings.
11 Communication Module Port Used to connect communication modules.
12 Communication cable hole Communication cable hole
13 USB port Connect the USB cable.
14 AC output cable hole Cable hole for AC output cable.
3
4
5
3
6
8
7
1
2
910 11 13 14
12

13
User Manual V1.0-2022-08-30 03 Product Introduction
3.5.3 Indicators
3.5.2 Dimensions
Indicator Status Description
ON = Equipment power on.
OFF = Equipment power o.
ON = The inverter is feeding power.
OFF = The inverter is not feeding power at the moment.
SINGLE SLOW FLASH = Self check before connecting to the grid.
SINGLE FLASH = Connecting to the grid.
ON = Wireless is connected/active.
BLINK 1 = Wireless system is resetting.
BLINK 2 = Wireless not connect to the router.
BLINK 4 = Wireless server problem.
BLINK = RS485 is connected.
OFF = Wireless is not active.
ON = A fault has occurred.
OFF = No fault.

14
03 Product Introduction User Manual V1.0-2022-08-30
3.5.4 Nameplate
Product type, and product model
Technical parameters
Safety symbols and certication
marks
Contact information and serial
number
The nameplate is for reference only.
Model
Product: Grid-Tied PV Inverter
: GW***-SMT -US
Power factor range: ~*,*.*cap...*.*ind
Operating temperature range:*** ~**°C(>** derating)°C
Type 4X, PV DC AFCI: Type 1
Grid Support Utility Interactive Inverter Transformerless
Vmax PV: ****Vd .c.
Isc PV: ****Ad .c.
MPPT voltage range: ***...***Vd.c.
Max. PV current: ** **Ad .c.
Rated grid voltage: **/*/** or **/**~ ****Va.c.
Max. current:
**Aa .c., Max. backfeed: *Aa.c.
AC grid frequency: **Hz
Max. apparent power: **kV A
Rated active power: **kW
***~*** ℉(>*** ℉derating)
Rated apparent power: **kV A
Made in Chin a
Outpu t voltage rang: ***. *~ ***V a.c.
AC grid frequenc y range : **. *~ **. *H z

15
User Manual V1.0-2022-08-30 04 Check and Storage
4 Check and Storage
4.1 Check Before Receiving
4.2 Deliverables
Check the following items before receiving the product.
1. Check the outer packing box for damage, such as holes, cracks, deformation, and other
signs of equipment damage. Do not unpack the package and contact the supplier as soon as
possible if any damage is found.
2. Check the inverter model. If the inverter model is not what you requested, do not unpack the
product and contact the supplier.
3. Check the deliverables for correct model, complete contents, and intact appearance. Contact
the supplier as soon as possible if any damage is found.
Notice
PV pin terminal: GW50K-SMT-US x 20; GW60K-SMT-US x 24.
Ground Terminal: GW50K-SMT-US x 10; GW60K-SMT-US x 12.
Inverter x 1 Mounting plate
x 1
Expansion
bolts x 6
Pin terminal
(Communication
terminal) x 6
Documents
x 1
PV pin
terminal x N
WARNING
Connect the cables using the delivered terminals and connectors. The manufacturer shall not
be liable for the damage if other terminals and connectors are used.
Screw for
mounting plate x 2
OT terminal
x 3
Communication
terminal x 1
Communication
module x 1
USB Cable
x 1
Waterproof nut
remove tool x 1
Ground
Terminal x N
OT terminal
x 2
Fireproong
Mud x 2

16
04 Check and Storage User Manual V1.0-2022-08-30
4.3 Storage
If the equipment is not to be installed or used immediately, please ensure that the storage
environment meets the following requirements:
1. Do not unpack the outer package or throw the desiccant away.
2. Store the equipment in a clean place. Make sure the temperature and humidity are
appropriate and no condensation.
3. The height and direction of the stacking inverters should follow the instructions on the
packing box.
4. The inverters must be stacked with caution to prevent them from falling.
5. If the inverter has been long term stored, it should be checked by professionals before being
put into use.