Goodwe UT Series User manual

Quick Installation Guide
V1.0-2023-02-20
Grid-tied PV Inverter
UT Series
(GW320K-UT | GW320KH-UT)

01
General Disclaimer
Safety Disclaimer
• The information in this guide 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 quick installation guide. For additional information,
please see the user manual.
• All operations should be performed by trained and knowledgeable technicians who are
familiar with local standards and safety regulations.
• Check the deliverables for correct model, complete contents, and intact appearance. Contact
after sales service if any damage is found or any component is missing.
• Use insulating tools and wear personal protective equipment when operating the equipment
to ensure personal safety. Wear anti-static gloves, clothes, and wrist strips when touching
electronic devices to protect the inverter from damage.
• Strictly follow the installation, operation, and conguration instructions in this guide. The
manufacturer shall not be liable for equipment damage or personal injury if you do not follow
the instructions. For more warranty details, please visit https://www.goodwe.com/support-
service/warranty-related
DC Side:
1. Ensure the component frames and the bracket system are securely grounded.
2. Connect the DC cables using the delivered PV connectors. The manufacturer shall not be
liable for the equipment damage if other connectors or terminals are used.
3. Ensure the DC cables are connected tightly, securely and correctly. Inappropriate wiring
may cause poor contacts or high impedances, and damage the inverter.
4. Measure the DC cable using the multimeter to avoid reverse polarity connection. Also,
the voltage should be under the permissible range. The manufacturer shall not be liable
for the damage caused by reverse connection and extremely high voltage.
5. The PV modules used with the inverter must have an IEC61730 class A rating. Never
grounding positive or negative of the PV module.
6. Do not connect one PV string to more than one inverter at the same time. Otherwise, it
may cause damage to the inverter.
AC Side:
1. The voltage and frequency at the connecting point should meet the on-grid
requirements.
2. Additional protective devices like circuit breakers or fuses are recommended on the AC
side. Specication of the protective device should be at least 1.6 times the max AC output
current.
3. You are recommended to use copper cables as AC output cables. A copper to aluminum
adapter terminal is required when an aluminum cable is used.
Safety Precaution
01
Warning

02
No. Check Item
1The product is rmly installed at a clean place that is well-ventilated and easy-to
operate.
2The PE, DC input, AC output, and communication cables are connected correctly and
securely.
3 Cable ties are intact, routed properly and evenly.
4 Unused ports and terminals are sealed.
5 The voltage and frequency at the connection point meet the on-grid requirements.
Check Before Power ON
DANGER 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.
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.
CE Mark Grounding point.
Product:
1. 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.
2. Do not apply mechanical load to the terminals, otherwise the terminals can be damaged.
3. All labels and warning marks should be visible after the installation. Do not scrawl,
damage, or cover any label on the device.
4. Unauthorized dismantling or modication may damage the equipment, the damage is
not covered under the warranty.
5. Do not touch the running equipment to avoid being hurt as its temperature may exceed
60°C. Do not install the equipment at a place within children's reach.
6. Install the product away from electromagnetic interference. If there are radio stations or
wireless communication equipment below 30 MHz near the installation location, please
install the equipment as follows:
• Add a multi-turn winding ferrite core at the DC input line or AC output line of the
inverter, or add a low-pass EMI
• The distance between the inverter and the wireless EMI equipment is more than 30m.
7. Warning labels on the inverter are as follows.

03
EU Declaration of Conformity
GoodWe Technologies Co., Ltd. hereby declares that the inverter with wireless communication
modules sold in the European market meets the requirements of the following directives:
• Radio Equipment Directive 2014/53/EU (RED)
• Restrictions of Hazardous Substances Directive 2011/65/EU and (EU) 2015/863 (RoHS)
• Waste Electrical and Electronic Equipment 2012/19/EU
• Registration, Evaluation, Authorization and Restriction of Chemicals (EC) No 1907/2006
(REACH)
You can download the EU Declaration of Conformity on https://en.goodwe.com.
GoodWe Technologies Co., Ltd. hereby declares that the inverter without wireless
communication modules sold in the European market meets the requirements of the following
directives:
• Electromagnetic compatibility Directive 2014/30/EU (EMC)
• Electrical Apparatus Low Voltage Directive 2014/35/EU (LVD)
• Restrictions of Hazardous Substances Directive 2011/65/EU and (EU) 2015/863 (RoHS)
• Waste Electrical and Electronic Equipment 2012/19/EU
• Registration, Evaluation, Authorization and Restriction of Chemicals (EC) No 1907/2006
(REACH)
You can download the EU Declaration of Conformity on https://en.goodwe.com.
LED Indicator
Indicator Status Description
ON= EQUIPMENT POWER ON
OFF= EQUIPMENT POWER OFF
ON= THE INVERTER IS FEEDING POWER
OFF= THE INVERTER IS NOT FEEDING POWER
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 ROUTER PROBLEM
BLINK 4 = WIRELESS SERVER PROBLEM
BLINK = RS485 IS CONNECTED
OFF= WIRELESS IS NOT ACTIVE
ON= A FAULT HAS OCCURRED
OFF= NO FAULT

04
No. Cable Type
Cable Specication
Outside Diameter
(mm)
Conductor Cross Sectional
Area(mm2)
1 DC cable PV standard. cable that
meets 1500V standard. 5.5-8 4-6
2AC cable
Multi-core outdoor
copper or aluminum
cable[1]
35-75
• Copper cable: 70≤S≤
400
• Aluminum cable:
150≤S≤400
• SPE ≥S/2
Single-core outdoor
copper or aluminum
cable[1]
• Single core cable:
20-38
• PE cable: 16-28
• Copper cable: 70≤S≤400
• Aluminum cable:
150≤S≤400
• SPE ≥S/2
3 PE cable Outdoors Cable - SPE ≥S/2
4
RS485
communication
cable
Outdoor shielded
twisted pair cable
that meets loacal
requirements.[2]
8-11 -
Note
[1] A copper to aluminum wiring terminal is required when using an aluminum cable.
[2] Cable length of the RS485 communication cable: ≤1000m.
The values in this table are valid only if the external protective earthing conductor and the
phase conductors are the same material. Otherwise, the cross-sectional area of the external
protective earthing conductor is to be determined in a manner which produces a conductance
equivalent to that which results from the application of this table.
Cable Speci󽗉cations

05
Parts
1. DC switch reset button[1] 2. DC switch 1-3 (DC
SWITCH 1-3) 3. PV input terminal 1-3 (MPPT1-3)
4. PV input terminal 7-9
(MPPT7-9)5. DC switch reset button 2 [1] 6. DC switch 7-9 (DC SWITCH 7-9)
7. PV input terminal 10-12
(MPPT10-12)8. DC switch reset button 3[1] 9. DC switch 4-6 (DC SWITCH 4-6)
10. PV input terminal 4-6
(MPPT4-6) 11. PV input terminal 13- 15 (MPPT13-15)[2] 12. DC switch reset button 4[1]
13. DC switch 13-15 (DC
SWITCH 13-15) [2] 14. Ventilation valve 15. DC switch reset button 5[1][2]
16. DC switch 10-12 (DC
SWITCH 10-12) 17. COM Port for module (COM1) 18. RS485 COM port (COM2)
19.
Remote shutdown or
emergency shutdown
COM port (COM3)[3]
20. AC cable outlet hole 21. LED indicator
22. LCD (optional) 23. Button (optional) 24. Grounding point
25 AC cable wiring box 26. Mounting handles 27. Bottom handles
Product Introduction
02
26
27
252422 23
21
1
8
2
9
3
10
4
11
5
12 13 14 15 16
17 18 19 20
67

06
Dimensions
Packing List
Installing the Inverter03
1120mm 368mm
920mm
810mm
280mm
x 1 x 1
x 2 x N*
x 6
x 6
x 4
x 1
x N
or
x 1 x 1
• N = Quantity depends on the inverter model.
• Bluetooth module is optional and delivered separately.
[1] DC switch reset button 1 controls DC switch 1-3, DC switch reset button 2 controls DC switch
4-6, DC switch reset button 3 controls DC switch 7-9, DC switch reset button 4 controls DC switch
10-12, DC switch reset button 5 controls DC switch 13-15.
[2] Only for GW320K-UT.
[3] Remote shutdown for Europe. Emergency shutdown for India.

07
Space Requirements
Angle Requirements
0%~100%RH
IP66
Children no touch
ALT: 5000m
≥600mm
≥1000mm
≥600mm
≥50mm
≥600mm
≥600mm
200mm

08
Space Requirements
• Horizontal Installation
• Triangle Installation
• Back-to-back Installation
≥800mm
≥500mm
≥200mm
≥200mm
Do not place anything that will block the heat sink of the two inverter.
Assembling the mounting plate
M3
1.5-2N·m

09
The M10 expansion bolts should be prepared by customers.
Wall mounting
Bracket mounting
Installing the Inverter
Lifting the Inverter
1 2 3
1 2 3
Installing the mounting bracket
1
2
Weight
2
1

10
Hoisting the Inverter
3
M6
2~3N·m
3
M6
2~3N·m
1
Weight
2
1
1
2

11
Electrical Connection
04
Recomended dimensions of the copper to aluminum wiring terminal and rubber wall:
PE Cable
M8
L=L1+(1~2)mm L1
1
23
M8
7~9N·m
112mm
12mm
48mm

12
Multi-core AC cable
L1
L2=L1+3mm
1
1
2
2
12
M12
M8
> 300mm
33-35mm14-16mm
53-55mm
73-75mm
43-45mm
63-65mm
38-40mm
26-28mm22-24mm
26-28mm 26-28mm
18-20mm
M8
7~9N·m
3
M12
25~30N·m
4
L1 L2 L3
1
43
PE
2
2
AC Cable
Opening the AC wiring box
M5
2.5~3N·m

13
Single-core AC cable
Closing the AC wiring box
M12
M8
18-20mm14-16mm
30-32mm
26-28mm
26-28mm
22-24mm
36-38mm
26-28mm
22-24mm
18-20mm
1
1
2
2
12
L2=L1+3mm L1
1
43
L2
PE
L3
L1
2
2
M8
7~9N·m
3
M12
25~30N·m
4
M5
2.5~3N·m
200mm
L1 L2 L3
PE

14
DC Cable (PV)
MC4 PV connector
Click
7~8mm
7~8mm
1
2
3
1
2
3
4
2
3
4
1
1
1
45
2
2
2
Click ≤1500V Click

15
Vaconn PV connector
Click
Click
7~8mm
7~8mm
22
3
4
3
4
1
2
3
1
1
≤1500V
1
1
45
2
2

16
RS485 communication cable
No. COM2 (RS485)
1RS485 A
2RS485 B
3RS485 A
4RS485 B
5Grounding
6Grounding
4
3
7
6
2
5
6
1
5
5
34
7
4
2
3
0.3~0.4N·m
1
6.5mm
25mm
12
2
1
D: 8-11mm

17
122
1
Power ON Power OFF
Turn on Turn o󽗈
Communication Module
Power ON and OFF05
2
AC Switch
DC Switch
PV String
Transformer Utility
Grid
Inverter
1

18
Commissioning via LCD
Commissioning via SolarGo APP
Monitoring via SEMS Portal App
For more detailed instructions, scan the QR code below.
UT Series User
Manual
SolarGo
User Manual
SEMS Portal
User Manual
WiFi Quick
Installation Guide
Commissioning
06
Set country code.
play
App Store <10m
<5m
SolarGo
SolarGo app
play
App Store
SEMS Portal APP
SEMS Portal
Set language
Set Safety
Set Safety
50Hz Default
Set Safety
Warehouse
Set Safety
Modify Success

Ocial Website
GoodWe Technologies Co.,Ltd.
No. 90 Zijin Rd., New District, Suzhou, 215011, China
www.goodwe.com
[email protected] Local Contacts
340-00931-00