340-00413-00

SolarGo App SEMS Portal App LinkedIn Offical Website

GOODWE (China)

No. 90 Zijin Rd., New District, Suzhou, 215011, China

T: +86 (0) 512 6958 2201
sales@goodwe.com (sales)
service@goodwe.com (service)

GOODWE (Germany) GOODWE (Brazil) MT SERIES USER MANUAL

Fürstenrieder Str. 279a 81377 München, Germany Rua Abelardo 45, Recife/PE, 52050-310
T: +49 8974120210 +49 421 83570-170 (service) T: +55 81 991239286
sales.de@goodwe.com sergio@goodwe.com
service.de@goodwe.com servico.br@goodwe.com

GOODWE (Netherlands) GOODWE (UK)

Franciscusdreef 42C, 3565AC Utrecht, the Netherlands 6 Dunhams Court, Dunhams Lane, Letchworth
T: +31 (0) 30 737 1140 Garden City, SG6 1WB UK
sales@goodwe.com T:+ 44 (0) 333 358 3184
service.nl@goodwe.com enquiries@goodwe.com.uk / service@goodwe.com.uk

GOODWE (India) GOODWE (Italy)

1202, G-Square Business Park, Sector 30A, Opp. Sanpada Via Cesare Braico 61, 72100 Brindisi, Italy
Railway Stn., Vashi, Navi Mumbai- 400703 T: +39 338 879 38 81; +39 831 162 35 52
T: +91 (0) 2249746788 valter.pische@goodwe.com (sales)
sales@goodwe.com / service.in@goodwe.com operazioni@topsenergy.com; goodwe@arsimp.it (service)

GOODWE (Turbutton) GOODWE (Australia)

Adalet Mah. Megapol Tower K: 9 No: 110 Bayraklı - Izmir Level 14, 380 St. Kilda Road, Melbourne,
T: +90 (232) 935 68 18 Victoria, 3004, Australia
info@goodwe.com.tr T: +61 (0) 3 9918 3905
service@goodwe.com.tr sales@goodwe.com / service.au@goodwe.com

GOODWE (Mexico) GOODWE (Korea)

Oswaldo Sanchez Norte 3615, Col. Hidalgo, Monterrey, 8F Invest Korea Plaza, 7 Heoleung-ro
Nuevo Leon, Mexico, C.P. 64290
T: +52 1 81 2871 2871
Seocho-gu Seoul Korea (06792)
T: 82 (2) 3497 1066
SOLAR INVERTER
sales@goodwe.com / soporte.latam@goodwe.com sales@goodwe.com / Larry.Kim@goodwe.com

Note: The information above is subject to change without prior notice, for details refer to
www.goodwe.com Version 1.0.1
1 Symbols ............................................................................................................................... 01

2 Safety Measures & Warning ....................................................................... 02

3 Product Introduction ......................................................................................... 04

3.1 Intended Usage .......................................................................................................................... 04

3.2 Inverter Overview ....................................................................................................................... 05

3.3 Technical Description ................................................................................................................ 07

3.4 Package ....................................................................................................................................... 08

4 Installation ...................................................................................................................... 09
4.1 Mounting Instructions ............................................................................................................... 09

4.2 Equipment Installation ............................................................................................................. 09

4.3 Electrical Connection ................................................................................................................ 11

4.4 Communication Connection .................................................................................................... 15

5 System Operation .................................................................................................. 20

5.1 LCD Panel and LED ..................................................................................................................... 20

5.2 User Interface Introduction ...................................................................................................... 21

5.3 System Configuration ................................................................................................................ 24

5.4 Wi-Fi Reset & Wi-Fi Reload ......................................................................................................... 28

5.5 Precaution for Initial Start-up ................................................................................................... 28

5.6 Error Message ............................................................................................................................. 28

5.7 Special Adjustable Setpoints ................................................................................................... 29

6 Troubleshooting ....................................................................................................... 30

7 Technical Parameters & Block Diagram .................................... 32

7.1 Technical Parameters ............................................................................................................... 32

7.2 Block Diagram ............................................................................................................................ 38

8 Caution ................................................................................................................................. 40
8.1 Clearing the FAN ........................................................................................................................ 40

8.2 Checking the DC Switch ........................................................................................................... 40

8.3 Turn On / Off the Inverter ..................................................................................................... 41

8.4 Checking The Electrical Connection ....................................................................................... 41

8.5 Fuse Replacement ..................................................................................................................... 41

1 Symbols 2 Safety Measures & Warning
This manual contains important instructions for the MT series of inverter which must be followed
Failure to observe warnings indicated in this manual may result in
during installation and maintenance.
injury.
The MT series includes four MPPTs and a Three-Phase solar inverter without transformer which
consists of GW30KLV-MT / GW35KLV-MT / GW50KLV-MT / GW50KN-MT / GW50KBF-MT /
Recyclable materials GW60KN-MT / GW60KBF-MT / GW70KHV-MT / GW75K-MT / GW80KHV-MT / GW80K-MT and
GW80KBF-MT model types.

MT Series have been designed and tested strictly according to international safety regulations.
Danger of high voltage & electric shock Because these are electrical and electronic components, related safety instructions must be
complied with during installation, and commissioning. Improper operation will cause serious
harm to:
This side up - The package must always have the 1. The life and well-being of the operators or third parties.
arrows point up
2. The inverter and other properties that belong to the operator or a third party.

The following safety instructions must be read and adhered to prior to any work and at all times..
Don't touch, hot surface! All detailed work-related safety warnings and notes will be specified at the critical points in
corresponding chapters. All installation and electrical work must be performed only by qualified

4
personnel. These personnel must meet the standards as stated below:
No more than four (4) identical packages
• Been specially trained and licensed;
be stacked on each other.
• Have thoroughly read and understood all related documents.

• Already familiar with safety requirements of electrical components and systems.

Special disposal instructions
The inverter must be installed and maintained by professionals in compliance with local electrical
standards, regulations and the requirements of local power authorities or companies.

• Improper handling of the device poses a risk of injury.

Fragile
• Always follow the instructions contained in the manual when moving or positioning the inverter.

• The weight of the equipment can cause injuries, serious wounds or bruises if improperly
Keep Dry handled.

• Please install equipment where it is out of reach of children.

• Before installing and maintaining the inverter, it is crucial to make certain that the inverter is not
Refer to operation instructions electrically connected.

• Before maintaining the inverter, disconnect the connection between the AC grid and the inverter
first. Then disconnect the connection between the DC input and the inverter, the operator
Wait at least 5 min after disconnecting the inverter before
touching internal parts should wait at least 5 min after the disconnection in case of electric shock.
5min
• All cables must be firmly attached, undamaged, properly insulated, and adequately dimen-
sioned.
CE mark.
• The temperature of some parts of the inverter may exceed 60 ℃ during operation. To avoid being
burned, do not touch the inverter during operation. Let it cool down before touching it.

01 02
• Without permission, opening of the inverter's front cover is not allowed. Users should not touch 3 Product Introduction
/ replace any components of the inverter except the DC / AC connectors. The manufacturer
assumes no responsibility for any damage to inverter or person caused by improper operations. 3.1 Intended Usage
• Static electricity may damage electronic components. Appropriate measures must be adopted The MT series is a four-MPPT, three-phase transformer-less grid-connected inverter, which is a
to prevent such damage to the inverter. Otherwise, the warranty will be voided. crucial unit between the PV string and the utility grid in the PV power system.

• Ensure that the output voltage of the proposed PV array is lower than the maximum rated input The inverter is dedicated to converting DC generated by the PV module into AC, which conforms
voltage of the inverter; otherwise the inverter may be damaged and the warranty will be to parameters of the local utility grid, feeding it into the utility grid. The intended usage of the
annulled. inverter is illustrated in the below figure.

• If the equipment is used in a manner not specified by the manufacturer, the protection provided
by the equipment may be impaired.

• When exposed to sunlight, the PV array will generate very high voltage, which can cause an kW.H

electrical shock hazard. Please strictly follow the instructions we have provided.

• PV modules should have an IEC61730 class-A rating.

• Prohibit inserting or pulling the AC or DC terminals when the inverter is working. Otherwise the A B C D
inverter will be destroyed.
The reason why the inverter cannot be connected to the PV module is that the positive or
Only DC connectors provided by the manufacturer are permitted for use. Otherwise the inverter negative terminal should be grounded, except when a transformer is used between the
may be damaged and the warranty will be voided. inverter and the grid.
• The inverter can exclude the possibility of DC residual currents to 6 mA in the system, where an
Item Description Note
external RCD is required in addition to the built-in RCMU, and a type-A RCD must be used to avoid
tripping. A PV string Monocrystalline silicon, polycrystalline silicon and others.

• The default photovoltaic module is not grounded. B Inverter MT Series

• If there are more than 3 PV strings on the input side, an additional fuse installation will be C Meter device Meter cupboard with distributed generation system
required. TN-S, TN-C, TN-C-S, TT, IT
D Utility grid
The IP65 machine is completely sealed until use. Please install it within one day after (different model types with different types of utility grid as below)
unpacking, otherwise please block the unconnected port and do not open it to ensure
that the machine is not exposed to water, moisture and dust. MT series GW30KLV-MT / GW35KLV-MT / GW50KLV-MT / GW50KN-MT / GW60KN-MTV /
To our inverter product, GOODWE provides a standard manufacturer's warranty, which comes GW50KBF-MT / GW60KBF-MT / GW75K-MT / GW80K-MT support four different types of grid.
with the product and a prepaid warranty extension solution to our customer. You can find the
TN-S TN-C TN-C-S TT
details about the terms and solutions from the below link. Transformer Transformer Transformer Transformer
L1 L1 L1 L1
https://en.goodwe.com/warranty.asp L2 L2 L2 L2
L3 L3 L3 L3
N PEN N N
PE PE
PE PE PE PE
Inverter Inverter Inverter Inverter

Note: For a TT-grid structure, the RMS voltage between the neutral wire and the earth wire must
be less than 20V.

03 04
GW70KHV-MT / GW80KHV-MT and GW80KBF-MT support the IT grid type. Refer to the below figure.
Without LCD

IT 586 264
Transformer
L1 8
L2 1 2 3
L3
6

PE 9

Inverter

785
7

3.2 Inverter Overview 4 5

10

MT series inverter illustration.

Note: Image shown here is for reference only; actual product you receive may be different.
1. PV Input Terminal 5. GPRS Port (Optional) 8. Indicator Light

586 264 2. RS485 Communication Port 6. Fans 9. Air Outlet

With LCD
3. AC Output Terminal 7. DC Switch (Optional) 10. External Protection
9
4. WiFi Port (Optional) Grounding Terminal
1 2 3

6 8 10

11
Item Name Description

785
7 1 PV Input Terminal For AC cable connection

2 RS485 Communication Port For PV string connection

4 5 12
3 AC Output Terminal Wi-Fi / GPRS for connection

4 Wi-Fi Port (Optional) For Wi-Fi module connection

1. PV Input Terminal 6. Fans 10. Button

5 GPRS Port (Optional) For GPRS module connection
2. RS485 Communication Port 7. DC Switch (Optional) 11. Air Outlet
6 Fans There are six fans to perform controlled force-air cooling.
3. AC Output Terminal 8. Indicator Light 12. External Protection
Grounding Terminal
4. WiFi Port (Optional) 9. LCD During normal operation, it is in the ' on ' state; it can shut down
7 DC Switch (Optional)
5. GPRS Port (Optional) the inverter after it is disconnected from the grid at the AC breaker.

8 Indicator light Display the state of the inverter

9 LCD Inverter operation data viewing and parameter configuration.

10 Button For configuration and viewing parameters.

11 Air Outlet Exit of hot air during the inverter operation.

External Protection
12 Second protection earth terminals as specified in EN50178.
Grounding Terminal

05 06
3.3 Technical Description 3.4 Package
3.3.1 Principle Description The unit is thoroughly tested and strictly inspected before delivery. Damage may occur during
shipping.
PV string voltage is transmitted to DC BUS via BOOST circuit.
1. Check the package for any visible damage upon receipt.
The MT series is equipped with four MPPTs for four DC inputs to ensure that the maximum power
is utilized even in different PV installation configurations. 2. Check the inner contents for damage after unpacking.

DC / AC converter circuit converts DC power into AC power, which can be fed into the utility grid. 3. Check the package list below:
Protective circuits are designed to protect both the inverter's safety and human safety.

DC switch is integrated for safe disconnection of DC input. The inverter provides a standard
interface RS485 and Wi-Fi (optional) for communication. Inverters also provide a running recode
data display and parameter configuration via LCD panel or App.

Please refer to Chapter 6.2 to check the main block diagram.

Inverter Wall-mounted Bracket Positive DC Plug[1] Negative DC Plug[1] Connecting Terminal

3.3.2 Function Description

Inverter functions can be grouped as follows:

• Conversion function
Inverter converts DC power into ac power, which conforms to the grid requirement of its
installation country. Cover Plate on The
Bottom of Inverter Expansion Bolt Fixed Screw 6-Pin Terminal
Grounding Screw &
Nut

• Data storage and display

Inverter stores the running information and fault records, displaying them on the LCD screen or
App. SolarGo
(Inverter Without
LCD)
• Parameter configuration
Inverter provides various parameter configurations for optional operation. Quick Installation Wi-Fi Configuration User's Guide of
Wi-Fi/GPRS Module Hexagonal Screw Instruction Instruction SolarGo App
• Communication interface
Inverter provides USB,Wi-Fi(optional) and standard RS485 communications interface. [1]Positive & Negative DC plug：
• Protection functions GW50KBF-MT 8 pairs.
>Insulation resistance to ground surveillance
GW30KLV-MT / GW50KN-MT 10pairs.
>Input voltage monitor
>Residual current monitoring unit GW35KLV-MT / GW60KN-MT / GW60KBF-MT / GW70KHV-MT / GW80KBF-MT 12 pairs.
>Anti-islanding protection GW50KLV-MT / GW75K-MT / GW80KHV-MT / GW80K-MT 16 pairs.
>PV array string fault monitoring
>DC fuse
>DC switch
>DC SPD
>AC SPD
>SPD fault monitoring
>AC over current protection
>Insulation monitoring

07 08
4 Installation To ensure heat dissipation and convenient disassembly, the minimum clearance around the
inverter should not be less than the following values:
4.1 Mounting Instructions
1. To achieve optimal performance, the ambient temperature should be lower than 45℃. 200mm
2. For easy maintenance, we suggest installing the inverter at eye level. The upward part ------------ 200mm
3. Inverters should not be installed near flammable or explosive items. Strong electro-magnetic The downward part -------- 500mm
forces should be kept away from installation site. 1000mm 1200mm 1000mm 500mm
The front part ---------------- 500mm
4. Product label and warning symbols should be placed at a location that is easy to see / read by Both sides ------------------- 1000mm
the users. Interval ----------------------- 1200mm
5. Ensure to install the inverter at a place where it is protected from direct sunlight, rain and snow. 500mm

4.2.2 Transport And Mounting Precedure

1. Two operators are required when moving the inverter to hold the handle and arm-brace
Keep away Keep it clear respectively.
Keep dry Sun Rain Accumulated snow
from sunlight of snow
2. Use the wall-mounted bracket as a template and drill 6 holes on the wall: 13 mm diameter and
65 mm deep.

4.2 Equipment Installation 3. Fix the wall-mounted bracket on the wall with six expansion bolts from the accessory bag.

4.2.1 Select the Installation Location 4. Carry the inverter with the handles on both sides of the inverter.

1. Take the bearing capacity of the wall into account. The wall (e.g. concrete and metal) should 5. Place the inverter on the wall-mounted bracket as illustrated.
be strong enough to hold the weight of the inverter over a long period of time.
2. Install the unit where it is accessible to service or provide an electrical connection. Backboard Installation
333
166.5
3. Do not install the unit on the wall containing or housing flammable materials. Expansion Pipe
4. Ensure the installation location is well ventilated.
5. Inverters should not be installed near flammable or explosive items. Any strong electro-mag- Nut

netic forces should be kept away from the installation site.

415
6. Install the unit at eye level for convenient operation and maintenance.
7. Install the unit vertically or tilted backwards of no more than 15 ° , no lateral tilt is allowed.Wir-
ing area should face downwards. Horizontal installation requires more than 250mm elevation. 194
388

Max
15°

Over
250mm

09 10
4.2.3 Schematic of Cover Dismantling and Installation Steps 7. Neutral conductor shall be blue; line conductor shall be black or brown (preferred); protective
earth bonding line shall be yellow-green.
1. Dismantle the downside cover. 2. Electrical installation.
8. The AC line construction shall be such that if the cord should slip from its anchorage, placing a
(Tool: external hexagonal screwdriver)
strain on conductors, the protective earthing conductor will be the last to take the strain.
Ensure the PE line is longer than L and N.

L±3 L1 ----- Live Wire 1

L2 ----- Live Wire 2
L3 ----- Live Wire 3
N ----- Neutral Wire
----- Earth Wire

Connect the line to the terminal Tighten the nut Tighten the screws
3. Assemble bottom-side cover. 4. Assemble downside cover.
(Tool: hex button. Twisting Force: 2 N.m) (Material: M5 inner-hexagon screws. Note: It is not necessary to connect Neutral wire to the inverter of GW30KLV-MT /
Tool: hex button) GW35KLV-MT / GW50KN-MT / GW60KN-MT / GW75K-MT / GW80K-MT products.
Please select Delta grid on the panel or SolarGo App, otherwise connect neutral
wire to them. Do not connect the neutral wire to the inverter of GW70KHV-MT,
GW80KHV-MT and GW80KBF-MT products.

AC cable illustration :

A B
Annealed copper wire

4.3 Electrical Connection C

4.3.1 Connection to Grid (AC Side Connection) Grade Description Value

A O.D 30~38mm
1. Measure the voltage and frequency of grid-connected access point, and ensure it is in
B Section area of conduction material 25~95mm²
accordance with the grid-connected standard of the inverter.
C Length of bare wire According to the terminal length
2. It is recommended to add a breaker or fuse to the AC side. The specification should be more
than 1.25 times rating of the AC output current.
4.3.2 AC Circuit Breaker and Residual Current Protection Device
3. The PE line of the inverter should be connected to the earth, ensure that the impedance
between the neutral wire and earth wire is less than 10 Ω. An independent three or four pole circuit-breakers for each inverter must be installed at the
output side to ensure that the inverter can be safely disconnected from the grid.
4. Disconnect the breaker or fuse between the inverter and the utility.
The output current of GW30KLV-MT / GW50KN-MT is 80A. Thus we recommend that the nominal
5. Connect the inverter to the grid. The wiring installation method on the AC output side is
current of the AC breaker be 100 A. The output current of GW35KLV-MT / GW50KBF-MT /
shown as below：
GW60KN-MT / GW60KBF-MT / GW70KHV-MT / GW80KHV-MT and GW80KBF-MT is 90A. Thus, we
6. Fix (Torque: 6-8 N.m) the connector of the AC cable to the corresponding terminals. recommend that the nominal current of the AC breaker be 120A.

11 12
The output current of GW50KLV-MT / GW50KLV-MT / GW80K-MT is 133A. Thus, we recommend 4.3.4 Connecting Inverter to PV Panel
that the nominal current of the AC breaker should be more than 160A.
Caution
Note: It is not allowed for several inverter to use the same circuit breaker. Connecting loads
between the inverter and circuit breaker is also not allowed 1. Ensure the DC switch is turned off before connecting PV string to the inverter.
The internal integrated residual current detection device (RCD) of the inverter can detect external 2. Ensure PV string polarity confirms with DC connector. Otherwise, it will cause damage to invert-
leakage-current in real time. When the detected leakage current value exceeds the limit value, the er.
inverter will be disconnected from the grid immediately. If an external RCD is installed, the action
3. Ensure the maximum open circuit voltage (Voc) of each PV string does not exceed the maximum
current should be 500mA or higher.
input voltage of the inverter under any circumstances (1100V).
4.3.3 Earth Terminal Connection 4. Ensure that the maximum short circuit current of each DC input is less than the inverter
The inverter is equipped with an earth terminal, per the requirement of EN 50178. allowable limit.

All non-current carrying exposed metal parts of the equipment and other enclosures of the PV 5. Do not connect positive or negative poles of PV string to earth (PE terminal). Otherwise, it will
power system must be grounded. destroy the inverter.

Please connect 'PE' cable to ground. 6. Positive cable should be red; negative cable should be black.

1. Strip the wire insulation sheet to a suitable length using a wire stripper, illustrated below. 7. The minimum insulation resistance to ground of the PV panels must exceed 33.3kΩ (R = 1000/30
mA), there is a risk of shock hazard if the requirement of minimum resistance is not met.

L1 8. The MT series has four PV input areas: PV1 input, PV2 input, PV3 input, PV4 input. Each has an
Section area of Section area of
Note MPP tracker. The four PV inputs work independently. Therefore, the four PV inputs can be differ,
AC cable (S) PE cable
including different module types, numbers of connecting PV strings and orientation angels of
Only applicable when the material
S > 16mm2 16mm²
of PE wire and L wire is the same. PV module.
S ≤ 35mm2 16mm² If the material is different, please
select according to the equivalent There are four types of DC connectors: DEVALAN, MC4, AMPHENDL H4 and QC4.10 series.
L2=L1 + (1~2mm) S > 35mm 2
S/2 resistance of the PE wire.

2. Insert the stripped wire into the terminal and compress it tightly by crimping pliers.
DEVALAN SERIES MC4 SERIES

3. Fix the earth wire on the machine.

AMPHENOL SERIES QC4.10 SERIES

A Note: The actual DC connector used is as shown in the accessory box.

NO. Name Explanation

A Cold-pressed terminal DC cable specification:

B B Screw M8*20

C Yellow and green line The maximum is 25mm2 A B Label Description Value
C
A External diameter of wire stock 4~5mm
B Cross-sectional area of conductor material 2.5~4mm2

C C Length of bare wire About 7mm

4. To improve the corrosion resistance of the terminal, we recommended to applying silica gel to
the earth terminal for corrosion resistance after the grounding cable assembly is completed.

13 14
The installation method for DC connector.
Positive connector

Inverter side

Negative connector

2. Insert the USB data cable

MC4 & QC4.10 DEVALAN & AMPHENOL 1. Open the bottom cover

Do not crimp wire This function is only for local firmware upgrades and parameter calibrations.
into the limit buckle.

4.4.2 RS485 Communication

Please use special tools to do crimping
This function only applies to the inverter with RS485 ports.

To better dustproof and waterproof the internal inverter, all DC connectors provided in the The RS485 port of the inverter is used to connect the EzLogger Pro, and the total length of
accessory bag should be connected to the inverter. If only some of the DC connectors are used, connecting cable should not exceed 1000m.
the DC connectors without connection should be blocked with a non-conductive insulator. Communication lines must be separated from other power lines to prevent interference to the
communication. RS485 connections are shown as below.

Internet

Inverter Inverter Inverter

Router
EzLogger Pro PC

Plug with PV waterproof plug

4.3.5 DC Switch

The DC switch is designed to be safely disconnected from the DC input if required. RS485 RS485 RS485

The inverter works automatically when the input and output meet the requirements. Rotating
The connection steps of RS485 communication of MT series are as follows:
the DC switch to the 'OFF' position will immediately cut off the flow of DC current.

Rotate the DC switch to the 'ON' position before starting the inverter. Step 1: Find the RS485 terminal and screw out the screw cap.

4.4 Communication Connection

RS485 RS485
RS485 RS485

Inverter operation data can be transferred by USB, RS485 or WI-FI Module to a PC with monitoring
software or to a data logger device ( e.g Ezlogger Pro). USB is only used for service debugging; The
RS485 is the standard communication choice for the inverter, and WI-FI module can be used
optionally for communication.

4.4.1 USB Connection

USB cable must be connected according to the following steps, shown below:

15 16
 RS485 communication cable. For device at the end of the daisy chain, rotate the terminal
Step 2:
resistance dial switch to the 'ON' state (The default state is 'OFF'). Then, ensure the shielding
Put the cable through the plate, and connect RS485 Single-hole layer of communication line is single-point grounded.
RS485 cable on the 6-pin terminal. communication board seal ring Cable
The 4.4.3 Wi-Fi Communication
Advise to use cable 16AWG-26AWG. Lock Nut Insulator Screw Cap
This function is only applicable for Wi-Fi model inverter. Please refer to 'Wi-Fi Configuration
No. Function Instruction' to complete WiFi configuration.
1 RS485+ After the configurations are completed, please register on the website: www.goodwe.com.
2 RS485-

123456
Please refer to Wi-Fi app for specific configuration.
3 Reserved
6.5mm
4 Reserved The Wi-Fi module installation of MT series are shown as below.
5 RS485+
6 RS485- 25mm

Step 3:
Connect the terminal to the right position onto the inverter.
Note: The terminal of different inverter model may be located in a different place.

4.4.4 Earth Fault Alarm

The inverter complies with IEC62109-2 13.9. When an earth fault occurs, a buzzer in the EzLogger
Pro will ring for 1 min, and an LED will be lit for 1 min. The alarm will ring again every half hour
unless the fault is resolved.

4.4.5 DRED ( Demand response enabling device)

120 Ω termination resistor dip switch
DRM function is achieved using the Ezlogger Pro. Please connect the Ezlogger Pro through the
RS485 port. Please refer to the Ezlogger Pro manual for detailed DRED connections.

Caution 4.4.6 Remote Shutdown

Cable requirements of RS485 communication: Shielded twisted-pair cable or shielded Step1:

twisted-pair Unscrew this plate from the inverter.
Ethernet cable 120 Ω termination resistor is controlled by dip switch. 'ON' means connected,
and 'OFF' means disconnected.

The terminal resistance dial switch is selected to 120 Ω.

• When A single inverter is in communication, rotate the terminal resistance dial switch to the
'ON' state (The default state is 'OFF') which is next to the RS485 communication port of inverter,
so that the RS485 terminal is 120Ω.Then, ensure the shielding layer of communication line
issingle-point grounded.

If multiple inverters are in communication, connect all of them in a daisy chain through the

17 18
 Step2: 5 System Operation
1. Plug out the 4-pin terminal and dismantle the resistor on it.
5.1 LCD Panel and LED
2. Plug the wire out; leave the 4-pin terminal for the next step.
As a human-computer interaction interface, the LCD display panel comprises LED indicators,
buttons and adisplay on the front panel of the inverter.
Unplug The wire The LED interface provides the working status of the inverter.

Buttons and LCD are used for configuration and viewing parameters.

LCD panel is included in GW30KLV-MT / GW35KLV-MT / GW50KN-MT / GW60KN-MT / GW50KBF-MT

/ GW70KHV-MT model type.

Enter
Step3: Up
Insert the gateway cable through the components ESC
as follows: screw cap, one-hole sealing ring, Down
insulation body and sheet-metal parts.
1234
LED only panel is included in: GW50KN-MT / GW50KLV-MT / GW50KBF-MT / GW60KN-MT /
No. Function 6.5mm GW60KBF-MT / GW70KHV-MT / GW75K-MT / GW80KHV-MT / GW80K-MT and GW80KBF-MT.
1 24V
2 Shutoff _1
Screw Nut The Screw Cap
3 24V
25mm Insulator
4 Shutoff _2
RS485 Single hole Cable
communication board seal ring
Green / green /green / red light respectively corresponds to:

Indicator Status Explanation

Step4:
ON = Equipment Power-on
1. Connect the terminal to the
right position of the inverter. OFF = Equipment Power-off

2. Fasten the waterproof plate to ON = Inverter is feeding power

the inverter. OFF = Inverter is not feeding power
Single slow flash = Self check before grid connects
Single flash = Will connect / active
ON = Wireless connected / active

4.4.7 SEMS Portal Blink 1 = Wireless system resetting

SEMS Portal is an online monitoring system. After completing the installation of Blink 2 = Wireless router problem
the communication connection, access www.semsportal.com or download the Blink 4 = Wireless server problem
App by scanning the QR code to monitor your PV plant and device. Blink = RS485 Connected
Please contact the after-sales for more operation options of the OFF = Wireless not active
SEMS Portal. SEMS Portal App
ON = Fault occurred
OFF = No fault

19 20
 Press the 'Enter' / 'ESC' to enter / exit the each level menu, use the 'Up' / 'Down' to select the
NOTE: item and change the parameters, and long press the 'Enter' (greater than 3s) to set the parame-
Download SolarGo App from Google Play Store or Apple Store to ters.
complete the system operation if the inverter has no LCD. You can First-level Menu Second-level Menu Third-level Menu
SolarGo APP also scan the QR code to download it.
Home Language Select Language

5.2 User Interface Introduction Running Info Date & Time Set Date & Time

Communication Select Address

① ②③④⑤ ⑥ ⑦ ⑧ ⑨
Configuration

Safety Select Safety

Adv.Settings

11 Grid Enable/ Disable Grid

History Info
LVRT Set ON / OFF
E-DAY
Device Info
999KWh ⑩ Shadow Set ON / OFF
⑬

80.00KW
E-TOTAL PF Value Set Power Factor

⑭ 999KWh ⑪ P [Active] Set Active Power

⑮ Waiting 2019-10-28 11:37:20 ⑫ P [Reactive] Set Reactive Power

Password Set New Password

FTY. Reset Factory Reset

① Safety code: The number represents the safety serial number
② Fan icon: The fan icon indicates that the fan is on Grid Type Select Grid Type
③ Power Derating: The output power of the inverter is derating
④ Alarm icon: The alarm icon indicates that the system LVRT function is on Factory Mode Select Factory Type

⑤ LVRT icon: The LVRT icon indicates that the system LVRT function is on
CustomSet Set ON / OFF
⑥ Shadow scan: The Shadow icon indicates that the Shadow scan function is on
⑦ PID icon: The PID icon indicates the existence of the PID module ARC Clear Clear ARC Error
⑧ Communication icon: Method of communication: GPRS, Wi-Fi or RS485
⑨ Communication information icon: GPRS and Wi-Fi show signal strength; RS485 shows the ARC Check ARC Check

communication address. AFD Func Enable / Disable

⑩ E-Day icon: Daily generation
⑪ E-Total: Total generation Hour Select Time
⑫ Time and date
Day Select Time
⑬ Real-time power icon
⑭ Real-time power Month Select Time
⑮ System status information
Year Select Time
5.3.1 Overview of Menu Architecture
Error Log
The display menu has a total of three levels. Use the 'Up' 'Down' 'Enter' 'ESC' button to operate
Enter Enter
the menu. The enter button has two operating methods: long-press (greater than 3s) and
First-level menu ESC Second-level menu ESC Third-level menu
short-press . In summary, there are 5 buttons total to operate the menu.

21 22
5.3.2 First-level Menu 5.3 System Configuration
Press 'up' / 'down' to select on the interface of First-level: History, Configuration, Adv.Settings etc. 5.4.1 Basic Settings
Pressing the Enter button will enter corressponding Second-level menu. Select the item through
Basic settings are mainly used to set the commonly used parameters, including language
the 'up' / 'down' in Second-level menu. Press Enter button to enter the project setup menu in the
settings, time settings, communication settings and safety settings .
Third-level menu, change the setting contents by pressing the 'up' / 'down', and press the 'Enter'
to set the conntents. If the country's safety setting is not selected (shows 'Configure Safety' on
display at home page), press any button to enter country's safety setting page.
Configuration Configuration Configuration 基本设置

Language Enter Language 中文 Enter Language 中文 语言设置 中文

Date & Time Date & Time English Date & Time English 时间设置 English
Comm ESC Comm Portugues(BR) ESC Comm Portugues(BR) 通信设置 Portugues(BR)
Safety Safety Türkçe Safety Türkçe 安规设置 Türkçe

Running info Configuration Press ' ' to enter the setup interface Press ' '' ' to select menu Press ' '' ' to change language 按下 ' '' '选择设置项目

E-day
Grid volt 220.0V 220.0V 220.0V Down Up
Grid curr 95.6A 95.6A 95.6A
Language
999KWh Grid Freq 50.00Hz 50.00Hz 50.00Hz
Date & Time Configuration Configuration Configuration

80.00KW
DC volt 1~4 999V 999V 999V 999V
DC curr 1~4 30.1A 30.1A 30.1A 30.1A Comm Language Time Enter Language Time Language Time
999KWh Str curr 1~3 10.1A 10.1A 10.1A
Safety Date & Time 13：29 Date & Time 13：29 Date & Time 03：29
ESC
Str curr 4~6 10.1A 10.1A 10.1A
Comm Date Comm Date Comm Date
Normal
Str curr 7~9 10.1A 10.1A 10.1A
19-07-18 11:37:20 Str curr 10~13 10.1A 10.1A 10.1A 10.1A Safety 2019-10-24 Safety 2019-10-24 Safety 2019-10-24

press ' ' to enter the setup interface press ' ' to enter the setup interface press ' ' to enter the setup interface Press ' '' ' to select menu Press ' '' ' to change value Press ' '' ' to select menu

Down Up
Adv.Settings History Info Device info
Configuration Configuration Configuration
Hour 50Kwh 2019.07.18
LVRT Day MODEL：GW50KN-MT Language Modbus [001] Enter Language Modbus [001] Language Modbus [001]
Shadow Month VERSION: V1.00.00.04.01.50.LL.N Date & Time Substa [097] Date & Time Substa [097] Date & Time Substa [097]

PF Value Year SN：8050KMTU173G0001

Comm WiFi Reset
ESC Comm WiFi Reset Comm WiFi Reset
Safety WiFi Reload Safety WiFi Reload Safety WiFi Reload
P (active) Error Log
Press ' '' ' to select menu Press ' '' ' to change address Press ' '' ' to select menu

press ' ' to enter the setup interface press ' ' to enter the setup interface Down Up

Configuration Configuration Configuration

Language Italy Enter Language Italy Language Italy

Date & Time Czech Date & Time Czech Date & Time Czech
Comm German ESC Comm German Comm German
Safety Danmark Safety Spain Safety Spain

Press ' '' ' to select menu Press ' '' ' to change safety Press ' '' ' to select menu

Down Up

Configuration Configuration Configuration

Grid Enter Grid Grid

Enable Grid Enable Grid Enable Grid
Disable Grid ESC Disable Grid Disable Grid

Press ' '' ' to select menu Press ' '' ' to change the operative mode Press ' '' ' to select menu

5.4.2 Advanced Settings

Advanced settings are mainly used to set the function parameters of the equipment to running
modes. To prevent the device from running abnormally because of improper operation, all
advanced-settings items requires a password. Therefore, enter a password so that you can set all
the settings in the 'advanced setting' menu. In case the customer forgets the password, all
devices have a unique super password and SN binding.

Advanced settings items include LVRT settings, Shadow settings, PF value settings, Active power
settings, Reactive power settings and password modification settings.

23 24
 5.4.3 History Information
Adv.Settings Adv.Settings Adv.Settings Adv.Settings
The history information mainly includes in the information about the generating capacity of the
LVRT
Shadow
Enter LVRT
Shadow Password
Enter LVRT
Shadow
Enter LVRT
Shadow
equipment, the fault record, the power generation information. The power generation informa-
ESC ESC ESC
tion mainly includes in the amount of electricity generation, daily power generation, monthly
[ OFF ] [ ON ]
PF Value PF Value [0 0 0 0] PF Value PF Value
P [active] P [active] P [active] P [active]

Press ' ' to enter set item Press ' '' ' to change value Press ' '' ' to select menu Press ' '' ' to change state power generation and annual power generation information.
Down Up
Adv.Settings Adv.Settings Adv.Settings Adv.Settings History info History info History info

Enter Enter
50Kwh 2019-10-28 50Kwh 2019-10-28 50Kwh 2019-10-28

Enter Enter
1.0 1.0 1.0

Hour Hour Hour

ARC Clear ARC Clear LVRT LVRT
0.9 0.9 0.9

Day Day Day

0.8 0.8 0.8

Shadow Shadow
ARC Check ARC Check
ESC ESC
0.7 0.7 0.7

ESC ESC
[DISABLE] [DISABLE] [ OFF ] [ ON ] Month Month Month
0.6 0.6 0.6

AFD Func AFD Func PF Value PF Value

0.5 0.5 0.5

Year 0.4
Year 0.4
Year 0.4

P [active] P [active] Error Log Error Log Error Log

0.3 0.3 0.3

0.2 0.2 0.2

0.1 0.1 0.1

0 2 4 6 8 10 12 14 16 18 20 22 24 0 2 4 6 8 10 12 14 16 18 20 22 24 0 2 4 6 8 10 12 14 16 18 20 22 24

Press ' '' ' to select menu Press ' '' ' to select menu Press ' '' ' to change state Press ' ' to enter select menu Press ' '' ' to select menu Press ' '' ' to select date
Press ' ' 3s to save settings

Down Down Up
Down Up Up
Adv.Settings Adv.Settings Adv.Settings Adv.Settings History info History info

Enter
500Kwh 2019-10 500Kwh 2019-10

Enter Enter
1.0 1.0

Hour Hour
ARC Clear ARC Clear LVRT LVRT
0.9 0.9

Day Day
0.8 0.8

Shadow Power Factor Shadow Power Factor

ARC Check ARC Check
ESC
0.7 0.7

ESC ESC
ARC Check ARC Check Month Month
0.6 0.6

AFD Func AFD Func PF Value [ + 0.99 ] PF Value [ + 0.99 ]

0.5 0.5

Year 0.4
Year 0.4

P [active] P [active] Error Log Error Log

0.3 0.3

0.2 0.2

0.1 0.1

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

Press ' '' ' to select menu Press ' '' ' to select menu Press ' '' ' to change state Press ' '' ' to select menu Press ' '' ' to select date
Press ' ' 3s to check AFD Func

Down Down Up Down Up

Down Up Up
History info History info
Adv.Settings Adv.Settings Adv.Settings Adv.Settings

Enter
15Mwh 2019 15Mwh 2019

Enter Enter
1.0 1.0

Hour Hour
ARC Clear ARC Clear LVRT Active Power LVRT Active Power
0.9 0.9

Day Day
0.8 0.8

Shadow [OFF] Shadow [OFF]

ARC Check ARC Check
ESC
0.7 0.7

ESC ESC
Clear ARC Error Clear ARC Error Month Month
0.6 0.6

AFD Func AFD Func PF Value 100% Pn PF Value 100% Pn

0.5 0.5

Year 0.4
Year 0.4

P [active] [CT 200] P [active] [CT 200] Error Log Error Log
0.3 0.3

0.2 0.2

0.1 0.1

0 1 2 3 4 5 6 7 8 9 9 10 12 0 1 2 3 4 5 6 7 8 9 10 11 12

Press ' ' 3s to clear ARC Error Press ' '' ' to select menu Press ' '' ' to select menu Press ' '' ' to change state Press ' '' ' to select menu Press ' '' ' to select date

Down Up Down Down Up

Up
History info History info History info
Adv.Settings Adv.Settings Adv.Settings Adv.Settings P01/10 P01/10

Down Enter
15Gwh

Enter Enter
1.0 Utility Loss 2019-10-28 13:21:20 Utility Loss 2019-10-28 13:21:20
Hour Hour Hour
FacoryMode FacoryMode P [reactive] P [reactive]
0.9
Dc Bus High 2019-10-28 13:21:20 Dc Bus High 2019-10-28 13:21:20
Day Day Gfci Check Failure 2019-10-28 13:21:20 Day Gfci Check Failure 2019-10-28 13:21:20
0.8

CustomSet1 CustomSet1 Reactive Power Reactive Power

Up ESC
0.7

ESC ESC
Utility Loss 2019-10-28 13:21:20 Utility Loss 2019-10-28 13:21:20
[ OFF ] [ OFF ] Password Password Month Month Month
0.6

CustomSet2 CustomSet2 +60% Pn +60% Pn

0.5
Utility Loss 2019-10-28 13:21:20 Utility Loss 2019-10-28 13:21:20
Year 0.4
Year Utility Loss 2019-10-28 13:21:20 Year Utility Loss 2019-10-28 13:21:20
CustomSet3 CustomSet3 FTY. Reset FTY. Reset Error Log Error Log Error Log
0.3

0.2 Utility Loss 2019-10-28 13:21:20 Utility Loss 2019-10-28 13:21:20

0.1
Utility Loss 2019-10-28 13:21:20 Utility Loss 2019-10-28 13:21:20
0 1 2 3 4 5 6 7 8 9 9 10 12

Press ' '' ' to change state Press ' '' ' to select menu Press ' '' ' to select menu Press ' '' ' to change value Press ' '' ' to select menu Press ' '' ' to select menu Press ' '' ' to select page

Down Up Down Up

5.4.4 Operation of Display When Started Up

Adv.Settings Adv.Settings Adv.Settings Adv.Settings

FacoryMode Enter FacoryMode P [reactive] Old Password Enter P [reactive] Old Password

When the input voltage reaches the inverter's turn-on voltage, the LCD will indicate 'WAITING'. If
CustomSet1 CustomSet1 [ 0 0 0 0] [ 0 0 0 0]
CustomSet2
[ OFF ]
ESC CustomSet2
[ OFF ] Password
New Password ESC Password
New Password

the grid is accessible, 'Checking xxx Sec' (The time is decided by the grid connection standards
CustomSet3 CustomSet3 FTY. Reset [ 0 0 0 0] FTY. Reset [ 0 0 0 0]

from a different country) will appear after 5 s. As it is counting, the inverter is self-checking. When
Press ' '' ' to change state Press ' '' ' to select menu Press ' '' ' to select menu Press ' '' ' to change value

Down Up Down Up
Adv.Settings Adv.Settings Adv.Settings Adv.Settings
it shows '00Sec', you will hear the voice from the motion of the relay. The LCD will display 'Normal'
FacoryMode Enter FacoryMode P [reactive] Enter P [reactive]
afterwards. The instant power output will be shown at the left of the LCD.
CustomSet1 CustomSet1 Password Password
CustomSet2
[ OFF ]
ESC CustomSet2
[ OFF ]
FTY.Reset
Factory Reset
ESC FTY.Reset
Factory Reset

CustomSet3 CustomSet3 Grid Type Grid Type 11 11 11 11

E-DAY E-DAY E-DAY E-DAY

Press ' '' ' to change state Press ' '' ' to select menu Press ' '' ' to select menu Press ' ' 3s to reset factory data
999KWh 999KWh 999KWh 999KWh

Down Up Down Up
80.00KW 0.00 0.00KW 80.00KW
E-TOTAL E-TOTAL E-TOTAL E-TOTAL

999KWh KW 999KWh 999KWh 999KWh

Adv.Settings Adv.Settings Adv.Settings Adv.Settings Waiting 2019-10-28 11:37:20 Checking 28 sec 2019-10-28 11:37:20 Checking... 2019-10-28 11:37:20 Normal 2019-10-28 11:37:20

Enter Down Enter

press ' ' to enter the setup interface press ' ' to enter the setup interface press ' ' to enter the setup interface press ' ' to enter the setup interface
FactoryMode Normal Mode FactoryMode Normal Mode P [reactive] P [reactive]
CustomSet1 Factory Mode1 CustomSet1 Factory Mode1 Password Star Grid Password Star Grid
CustomSet2 Factory Mode2 ESC CustomSet2 Factory Mode2 Up FTY.Reset Delta Grid ESC FTY.Reset Delta Grid
CustomSet3 Factory Mode3 CustomSet3 Factory Mode3 Grid Type Grid Type

Press ' '' ' to change state Press ' '' ' to select menu Press ' '' ' to select the setting item Press ' '' ' to change the grid type 5.4.5 Menu Introduction
When PV panel is feeding power to the inverter, the screen shows the first interface of the

25 26
first-level menu. The interface displays current state of the system. It shows 'Waiting' when in the 5.4 Wi-Fi Reset & Wi-Fi Reload
initial state; it shows 'Normal' when in the power generation mode. If there is something wrong
These functions are only available for Wi-Fi model inverters.
with the system, an error message will be shown. Please refer to '5.6 Error Message'.
1. In the 'Configuration' menu, select 'Wi-Fi Reset' and press 'Enter' for 3 seconds to reset inverter
• In the first-llevel menu, the displayed information can be switched via the 'Up' and 'Down'
Wi-Fi module. Wait for a while. The operation result will be shown on the display. The function
button operation. There are 6 interfaces in total, which are circulatory. The second-level menu
can be applied when the inverter is unable to connect to router or monitor server.
can only be selected using the 'Enter' button from the seventh interface.
Running info Configuration Configuration
• In the 'History Info' menu, press 'Enter' and 'Down' to select 'Error Log', press 'Enter' to enter Grid volt 220.0V 220.0V 220.0V

Enter
E-day Grid curr 95.6A 95.6A 95.6A

Down Down
Language Modbus [001] Language Modbus [001]
the historical error message interface. Press 'Up' and 'Down' to switch the display page and
999KWh Grid Freq 50.00Hz 50.00Hz 50.00Hz
Date & Time Substa [097] Date & Time Substa [097]

80.00KW
DC volt 1~4 999V 999V 999V 999V
DC curr 1~4 30.1A 30.1A 30.1A 30.1A Comm WiFi Reset
ESC Comm WiFi Reset

inquire the historical error message. Press 'ESC' to return to the upper menu.
999KWh Str curr 1~3
Str curr 4~6
10.1A
10.1A
10.1A
10.1A
10.1A
10.1A Safety WiFi Reload Safety WiFi Reload
Normal
Str curr 7~9 10.1A 10.1A 10.1A
19-07-18 11:37:20 Str curr 10~13 10.1A 10.1A 10.1A 10.1A

• In the 'Configuration' menu, select 'Date & Time' to enter the setting interface, Press 'Up' and
press ' ' to enter the setup interface press ' ' to enter the setup interface Press ' '' ' to select menu Press ' '' ' to change address

'Down' to change the data, short-press 'Enter' to move cursor, long-press 'Enter' to save the 2. In the 'Configuration' menu, select 'Wi-Fi Reload' at lever 3. Press 'Enter' for 3 seconds. The
settings. initial settings of the Wi-Fi module will be reloaded. Wait for a while. the operation result will be
• You must type in the password before entering the Advantage Setting. The inverter's default shown on the display. The function can be applied when inverter is unable to connect to Wi-Fi
password is 1111. You can set the parameters and modify the password after this password modulTe. After Wi-Fi modular is restored to its initial settings, the Wi-Fi module needs to be
verification is passed. If you forget your password, please contact after-sales for help. reset again.
Running info Configuration Configuration

• In 'Configuration' menu, select 'Language' and press 'Enter' to enter language setting interface, Grid volt 220.0V 220.0V 220.0V

Enter
E-day Grid curr 95.6A 95.6A 95.6A

Down Down
Language Modbus [001] Language Modbus [001]

press 'Up' or 'Down' to change language, long-press 'Enter' to save the settings, press 'ESC' to
999KWh Grid Freq 50.00Hz 50.00Hz 50.00Hz
Date & Time Substa [097] Date & Time Substa [097]

80.00KW
DC volt 1~4 999V 999V 999V 999V
DC curr 1~4 30.1A 30.1A 30.1A 30.1A Comm WiFi Reset
ESC Comm WiFi Reset

return.
999KWh Str curr 1~3
Str curr 4~6
10.1A
10.1A
10.1A
10.1A
10.1A
10.1A Safety WiFi Reload Safety WiFi Reload
Normal
Str curr 7~9 10.1A 10.1A 10.1A
19-07-18 11:37:20 Str curr 10~13 10.1A 10.1A 10.1A 10.1A
Press ' '' ' to select menu Press ' '' ' to change address

• In the 'History Info' menu, short-press 'Enter' to enter the second-level and third-level menu.
press ' ' to enter the setup interface press ' ' to enter the setup interface

In the third-level menu, press 'up' or 'down' to inquire the historical power generation data in
5.5 Precaution For Initial Startup
Year Mode, Month Mode, Day Mode and Hour Mode. Press 'ESC' to return to upper menu.
1. Make sure the AC circuit is connected and AC breaker is turned off.
• In 'Configuration' menu, choose 'Comm' and press 'Enter' to enter the Modbus address
interface. Press 'Up' or 'Down' to set the address, long press 'Enter' to save the address. 2. Make sure the DC cable between inverter and PV string is connected, and the PV voltage is
normal.
This function is used for special requirements, please don't set it arbitrarily.
3. Turn on the DC switch, and set safety according to the local regulation.
• In the second-level menu, select 'LVRT'(if LVRT mode has not been turned on), it will show
'[OFF]' on the right hand side of the LCD. Then press 'Up' or 'Down' to change the state to 4. Turn on the AC breaker. Check the inverter work normal.
'[ON]'. Long press 'Enter' to save the setting. Then the screen will soon display '[ON]' after a
while. This means that LVRT mode has been successfully turned on. 5.6 Error Message
This function is used for special requirements, please do not set it arbitrarily. The error message in below diagram will be displayed on the LCD if faults occur.
• In the second-level menu, select 'Shadow'(if shadow mode has not been turned on). It will
Error code Error message Description
show '[OFF]' on the right hand side of the LCD. Then press 'Up' or 'Down' to change the state to
'[ON]'. Long press 'Enter' to save the setting ，and the screen will display '[ON]' after a while, so 01 SPI Failure Internal communication failure
that the Shadow mode has been successfully turned on. 02 EEPROM R/W Failure Memory chip failure
This function is used for special requirements, please do not set it arbitrarily. 03 Fac Failure Grid Frequency exceed the inverter limit
• Select 'Safety' in the 'Configuration' menu, then press 'Enter', so that the set safety interface 07, 25 Relay Check Failure Relay self-checking failure
will be shown. Press 'Down' or 'Up' to choose the safety you need and then long press 'Enter'.
The chosen safety option will be set. If there is no exact proper country code, please choose Communication error occurs between
12 LCD Communication Failure
'50Hz Grid Default' or '60Hz Grid Default' accordingly. LCD DSP and the Master DSP

27 28
 Error code Error message Description 6 Troubleshooting
The DC component of AC current exceed If the Inverter is unable to work properly, please refer to the following instructions before
13 DC Injection High contacting your local service centre. If any problems arise, the red (FAULT) LED indicator on the
inverter's limit
front panel will light up and the LCD screen will display relevant information. Please refer to the
Insulation Resistance between the ground following table for a list of error message and associated solutions.
14 Isolation Failure
and the panel is too low
Type of fault Troubleshooting
15 Vac Failure Grid voltage exceeds the inverter limit

16 External Fan Failure External Failure 1. Check the impedance between Ground and PV (+) & PV (-). The impedance
Isolation Failure value must be greater than 100 kΩ. Ensure the inverter is earthed.
17 PV Over Voltage PV Array voltage exceeds the inverter limit 2. Contact local service office for help if the problem persists.

19 Over Temperature Over temperature on the case

20 IFAN Fault Internal FAN Fault 1. The ground current is too high.
2. Unplug the inputs from the PV generator and check the peripheral AC
21 DC BUS HIGH BUS voltage is too high system.
Ground I Failure
3. When the problem is cleared, reconnect the PV panel and check the Inverter
22 Ground I Failure Residual current protection
status.
23 Utility Loss Grid disconnection/fault 4. Contact local service office for help if the problem persists.

30 REF 1.5V Failure 1.5V reference voltage exceeds the limit

31, 24 AC HCT Failure AC current sensor failure 1. The PV Inverter will automatically restart within 5 minutes if the grid returns
to normal.
32, 26 GFCI Failure Leakage current detection circuit Failure Vac Failure 2. Ensure grid voltage conforms with the specification.
3. Ensure neutral (N) wire and PE wire are connected well.
Others Device Failure Internal Device Failure 4. Contact local service office for help if the problem persists.
System
Failure
1. Grid is not connected.
5.7 Special Adjustable Setpoints Fac Failure 2. Check grid connection cables.
3. Check availability of grid.
The inverter has a field inwhich the user can set functions, such as trip points, trip times, recon-
nect times, and active and inactive QU and PU curves. It is adjustable by using special software.If
you need to use it, please contact with after sales. 1. Not connect to the grid.
Utility Loss 2. Check if the power grid is connected to cable.
To obtain manuals for using the software, you can download them from our official website or 3. Check the availability of power grid.
contact after-sales.

1. Check if the PV open circuit voltage is higher or too close to the maximum
input voltage or not.
PV Over Voltage 2. If the problem persists when PV voltage is less than the maximum input
voltage, contact local service office for help.

1. The internal temperature is higher than normal value specified.

2. Reduce ambient temperature.
Over Temperature
3. Move the inverter to a cool place.
4. If the problem still exists, contact local service office for help.

29 30
 Type of fault Troubleshooting 7 Technical Parameters & Block Diagram
Relay-Check Failure 7.1 Technical Parameters
DCI Injection High Technical Data GW30KLV-MT GW35KLV-MT GW50KLV-MT
DC Input Data
EEPROM R/W Failure Max. PV Power (W) 54000 63000 90000
Max. DC Input Voltage (V) 800 800 800
SCI Failure MPPT Range (V) 200~650 200~650 200~650
Starting Voltage (V) 200 200 200
SPI Failure 1. Turn off DC switch of the inverter. Min. Feed-in Voltage(V) 210 210 210
2. Wait untill the inverter's LCD light is off. Nominal DC Input Voltage (V) 370 370 370
DC BUS High
3. Turn on the DC switch and ensure it is connected. Max. Input Current (A) 30/30/20/20 30/30/30/30 44/44/44/44
4. If the problem persists, contact local service office for help. Max. Short Current (A) 38/38/25/25 38/38/38/38 55/55/55/55
BUS Unbalance
No. of MPP Trackers 4 4 4
No. of Input Strings per Tracker 3/3/2/2 3/3/3/3 4/4/4/4
Inverter GFCI Failure
AC Output Data
Failure Ifan Fault Nominal Output Power (W) 30000 36000 50000
208VAC 28800 34500 47300
Efan Fault Max. Output Power (W) 220VAC 30000 36000 50000
240VAC 33000 39900 55000
Afan Fault Max. Output Apparent Power (VA) 33000 39900 55000
Nominal Output Voltage (V) 150~300 150~300 150~300
1. Turn off the DC switch, take off the DC connector and measure the voltage of Nominal Output Frequency (Hz) 50/60 50/60 50/60
the PV array. Max. Output Current (A) 80 96 133
2. Plug in the DC connector, and turn on DC switch. Output Power Factor ~1 (Adjustable from 0.8 leading to 0.8 lagging)
No display
3. If PV array voltage is lower than 250V , please check the configuration of Output THDi (@Nominal Output) <3%
inverter module. Efficiency
4. If voltage is higher than 250V , please contact the local office. Max. Efficiency 98.7% 98.8% 98.7%
European Efficiency 98.3% 98.5% 98.3%
Protection
1. If the Wi-Fi module fails to connect to the network after choosing the right PV String Current Monitoring Integrated
router hotspot and entering the right passwords, it is possible that there are Anti-islanding Protection Integrated
Wi-Fi module fail to special characters in the hotspot's password that are not supported by Input Reverse Polarity Protection Integrated
Others Insulation monitoring Integrated
connect to network module. Please modify the password to comprise only Arabic numerals or
uppercase / lowercase letters. DC fuse Integrated
2. If the problem persists, contact the local service office for help. Anti-PID Function for Module Optional
DC SPD Protection Integrated（Type II）
AC SPD Protection Integrated（Type II）
Residual Current Monitoring Unit Integrated

Note: AC Over Current Protection Integrated

AC Short Protection Integrated
When sunlight is insufficient, the PV Inverter may continuously start up and shut down automati- AC Over Voltage Protection Integrated
cally because of insufficient power generation by the PV panel. General Data
Ambient Temperature Range (℃) -30~60
Relative Humidity 0~100%
Operating Altitude (m） ≤4000
Cooling Fan Cooling
Display LCD or WiFi+APP LCD or WiFi+APP LED, WiFi+APP
Communication RS485 or WiFi RS485 or WiFi RS485&WiFi, PLC(Optional)
Weight (kg) 59 64 70
Dimension (Width * Height * Depth mm） 586*788*264 586*788*264 586*788*267
Protection Degree IP65
Night Self Consumption (W) <1
Topology Transformerless
Certifications & Standards
Grid Regulation
Safety Regulation Visit homepage to achieve information.
EMC Regulation

31 32
 Technical Data GW50KN-MT GW60KN-MT GW50KBF-MT Technical Data GW60KBF-MT GW75KBF-MT GW80KBF-MT
DC Input Data DC Input Data
Max. PV Power (W) 65000 80000 65000 Max. PV Power (W) 80000 97500 104000
Max. DC Input Voltage (V) 1100 1100 1100 Max. DC Input Voltage (V) 1100 1100 1100
MPPT Range (V) 200~1000 200~1000 200~1000 MPPT Range (V) 200~1000 200~1000 200~1000
Starting Voltage (V) 200 200 200 Starting Voltage (V) 200 200 200
Min. Feed-in Voltage(V) 210 210 210 Min. Feed-in Voltage(V) 210 210 210
Nominal DC Input Voltage (V) 620 620 620 Nominal DC Input Voltage (V) 620 620 620
Max. Input Current (A) 33/33/22/22 33/33/33/33 30/30/30/30 Max. Input Current (A) 44/44/44/44 44/44/44/44 39/39/39/39
Max. Short Current (A) 41.5/41.5/27.5/27.5 41.5/41.5/41.5/41.5 37.5/37.5/37.5/37.5 Max. Short Current (A) 55/55/55/55 55/55/55/55 54.8/54.8/54.8/54.8
No. of MPP Trackers 4 4 4 No. of MPP Trackers 4 4 4
No. of Input Strings per Tracker 3/3/2/2 3/3/3/3 2/2/2/2 No. of Input Strings per Tracker 3/3/3/3 3/3/3/3 3/3/3/3
AC Output Data AC Output Data
Nominal Output Power (W) 50000 60000 50000 Nominal Output Power (W) 60000 75000 80000
Max. Output Power (W) [1] 55000;57500@415Vac 66000;69000@415Vac 55000;57500@415Vac Max. Output Power (W) [1] 66000;69000@415Vac 82500 88000
Max. Output Apparent Power (VA) [2] 55000;57500@415Vac 66000;69000@415Vac 55000;57500@415Vac Max. Output Apparent Power (VA) [2] 66000;69000@415Vac 82500 88000
Nominal Output Voltage (V) 400, default 3L+N+PE , 3L+PE optional in settings 400, default 3L+N+PE ,
Nominal Output Voltage (V) 500, 3L/PE 540, 3L/PE
Nominal Output Frequency (Hz) 3L+PE optional in settings
50/60 50/60 50/60
Nominal Output Frequency (Hz) 50/60 50/60 50/60
Max. Output Current (A) 80 96 80
Max. Output Current (A) 96 95.3 94.1
Output Power Factor ~1 (Adjustable from 0.8 leading to 0.8 lagging)
Output Power Factor ~1 (Adjustable from 0.8 leading to 0.8 lagging)
Output THDi (@Nominal Output) <3%
Output THDi (@Nominal Output) <3%
Efficiency
Efficiency
Max. Efficiency 98.7% 98.8% 98.8%
Max. Efficiency 98.8% 99.0% 99.0%
European Efficiency 98.3% 98.5% 98.3%
European Efficiency 98.3% 98.4% 98.4%
Protection
Protection
PV String Current Monitoring Integrated
PV String Current Monitoring Integrated
Anti-islanding Protection Integrated
Anti-islanding Protection Integrated
Input Reverse Polarity Protection Integrated
Input Reverse Polarity Protection Integrated
Insulation monitoring Integrated
Insulation monitoring Integrated
DC fuse Integrated
DC fuse Integrated
Anti-PID Function for Module Optional
Anti-PID Function for Module Optional
DC SPD Protection Integrated（Type II）
DC SPD Protection Integrated（Type II）
AC SPD Protection Integrated（Type II）
AC SPD Protection Integrated（Type II）
Residual Current Monitoring Unit Integrated
Residual Current Monitoring Unit Integrated
AC Over Current Protection Integrated
AC Over Current Protection Integrated
AC Short Protection Integrated
AC Short Protection Integrated
AC Over Voltage Protection Integrated
AC Over Voltage Protection Integrated
General Data General Data
Ambient Temperature Range (℃) -30~60
Ambient Temperature Range (℃) -30~60
Relative Humidity 0~100% 0~100%
Relative Humidity
Operating Altitude (m） ≤4000 ≤4000
Operating Altitude (m）
Cooling Fan Cooling Fan Cooling
Cooling
Display LCD or WiFi+APP Display LED or WiFi+APP
Communication RS485 or WiFi or PLC Communication RS485 or WiFi or PLC
Weight (kg) 59 64 60 Weight (kg) 65 65 65
Dimension (Width * Height * Depth mm） 586*788*264 586*788*264 586*788*264 Dimension (Width * Height * Depth mm） 586*788*264 586*788*264 586*788*267
Protection Degree IP65 Protection Degree IP65
Night Self Consumption (W) <1 Night Self Consumption (W) <1
Topology Transformerless Topology Transformerless
Certifications & Standards Certifications & Standards
Grid Regulation Grid Regulation
Safety Regulation Visit homepage to achieve information. Safety Regulation Visit homepage to achieve information.
EMC Regulation EMC Regulation

[1] For Belgium Max. Output Power (W): GW50KN-MT is 50000; GW60KN-MT is 60000; GW50KBF-MT is 50000; [1] For Belgium Max. Output Power (W): GW60KBF-MT is 60000; GW75KBF-MT is 75000; GW80KBF-MT is 80000;
[2] For Belgium Max. Output Apparent Power (VA): GW50KN-MT is 50000; GW60KN-MT is 60000; GW50KBF-MT is 50000; [2] For Belgium Max. Output Apparent Power (VA): GW60KBF-MT is 60000; GW75KBF-MT is 75000; GW80KBF-MT is 80000;

33 34
 Technical Data GW70KHV-MT GW80KHV-MT Technical Data GW75K-MT GW80K-MT
DC Input Data DC Input Data
Max. PV Power (W) 91000 120000 Max. PV Power (W) 112500 120000
Max. DC Input Voltage (V) 1100 1100 Max. DC Input Voltage (V) 1100 1100
MPPT Range (V) 200~1000 200~1000 MPPT Range (V) 200~1000 200~1000
Starting Voltage (V) 200 200 Starting Voltage (V) 200 200
Min. Feed-in Voltage(V) 210 210 Nominal DC Input Voltage (V) 600 620
Nominal DC Input Voltage (V) 750 800 Max. Input Current (A) 44/44/44/44 44/44/44/44
Max. Input Current (A) 33/33/33/33 44/44/44/44 Max. Short Current (A) 55/55/55/55 55/55/55/55
Max. Short Current (A) 41.5/41.5/41.5/41.5 55/55/55/55 No. of MPP Trackers 4 4
No. of MPP Trackers 4 4 4/4/4/4 (Standard)
No. of Input Strings per Tracker 4/4/4/4 (Standard) 3/3/3/3 (Optional,
No. of Input Strings per Tracker 3/3/3/3 3/3/3/3 Support bifacial module)
AC Output Data AC Output Data
Nominal Output Power (W) 70000 80000 Nominal Output Power (W) 75000 80000
Max. Output Power (W) [1] 77000 88000 Max. Output Power (W) [1] 75000 88000
Max. Output Apparent Power (VA) [2] 77000 88000 Max. Output Apparent Power (VA) [2] 75000 88000
400, default 3L+N+PE,
Nominal Output Voltage (V) 500, 3L/PE 500, 3L/PE Nominal Output Voltage (V) 380/415
3L+PE optional in settings
Nominal Output Frequency (Hz) 50/60 50/60
Nominal Output Frequency (Hz) 50/60 50/60
Max. Output Current (A) 133 94.1
Max. Output Current (A) 89 94.1
Output Power Factor ~1 (Adjustable from 0.8 leading to 0.8 lagging)
Output Power Factor ~1 (Adjustable from 0.8 leading to 0.8 lagging)
Output THDi (@Nominal Output) <3%
Output THDi (@Nominal Output) <3%
Efficiency
Efficiency
Max. Efficiency 98.8%
Max. Efficiency 99.0% 99.0%
European Efficiency 98.3%
European Efficiency 98.4% 98.4%
Protection
Protection
PV String Current Monitoring Integrated
PV String Current Monitoring Integrated
Anti-islanding Protection Integrated
Anti-islanding Protection Integrated
Input Reverse Polarity Protection Integrated
Input Reverse Polarity Protection Integrated
Insulation monitoring Integrated
Insulation monitoring Integrated
DC fuse Integrated
DC fuse Integrated
Anti-PID Function for Module Optional
Anti-PID Function for Module Optional
DC SPD Protection Integrated（Type II）
DC SPD Protection Integrated（Type II）
AC SPD Protection Integrated（Type II）
AC SPD Protection Integrated（Type II）
Residual Current Monitoring Unit Integrated
Residual Current Monitoring Unit Integrated Invegrated
Humidity Monitoring
AC Over Current Protection Integrated Integrated
AC Over Current Protection
AC Short Protection Integrated AC Short Protection Integrated
AC Over Voltage Protection Integrated AC Over Voltage Protection Integrated
General Data General Data
Ambient Temperature Range (℃) -30~60 Ambient Temperature Range (℃) -30~60
Relative Humidity 0~100% Relative Humidity 0~100%
Operating Altitude (m） ≤4000 Operating Altitude (m） ≤4000
Cooling Fan Cooling Cooling Fan Cooling
Display LCD or WiFi+APP LED, WiFi+APP Display LED, WiFi+APP
Communication RS485 or WiFi or PLC Communication RS485 & Wi-Fi, PLC(Optional)
Weight (kg) 60 65 Weight (kg) 70
Dimension (Width * Height * Depth mm） 586*788*264 586*788*267 Dimension (Width * Height *Depth mm） 586*788*267
Protection Degree IP65 Protection Degree IP65
Night Self Consumption (W) <1 Night Self Consumption (W) <1
Topology Transformerless Topology Transformerless
Certifications & Standards Certifications & Standards
Grid Regulation Grid Regulation
Safety Regulation Visit homepage to achieve information. Safety Regulation Visit homepage to achieve information.
EMC Regulation EMC Regulation

[1] For Belgium Max. Output Power (W): GW70KHV-MT is 70000; GW80KHV-MT is 80000； [1] For Belgium Max. Output Power (W): GW80K-MT is 80000；
[2] For Belgium Max. Output Apparent Power (VA): GW70KHV-MT is 70000; GW80KHV-MT is 80000； [2] For Belgium Max. Output Apparent Power (VA): GW80K-MT is 80000；

35 36
Note： 7.2 Block Diagram
Overvoltage Category Definition GW30KLV-MT / GW50KN-MT main circuit.
Category I: applies to equipment connected to a circuit where measures have been taken to
reduce transient overvoltage to a low level.
PV1+ Input
MPPT
EMI
PV1- Circuit 1
Filter

Category II: applies to equipment not permanently connected to the installation. For example,
DC
SPD

Input
appliances, portable tools and other plug-connected equipment;
PV2+ MPPT L1
EMI L2
PV2- Circuit 2 Output
Filter DC / AC L3
DC LCL EMI L

Category III: applies to fixed downstream equipment, including the main distribution board. This
Converter N
DC

Switch Filter Filter

SPD
Filter PE
PV3+ Input Circuit

includes switchgear and other equipment in an industrial installation;

MPPT
EMI
PV3- Circuit 3 AC SPD
Filter

Category IV: applies to equipment permanently connected at the origin of an installation

DC
SPD

PV4+ Input AC Relay

MPPT
EMI
(upstream of the main distribution board).For example, electricity meters, primary
PV4- Circuit 3
Filter

overcurrent protection equipment and other equipment connected directly to

DC
SPD

outdoor open lines.

GW50KBF-MT main circuit.
Moisture Location Category Definition
Level Input
Moisture parameters
PV1+
MPPT
EMI
3K3 4K2 4K4H
PV1- Circuit 1
Filter

Temperature Range 0~+40℃ -33~+40℃ -20~+55℃

DC
SPD

PV2+ Input L1
Humidity Range 5%～85% 15%～100% 4%～100%
MPPT
EMI L2
PV2- Circuit 2 Output
Filter DC / AC L3
DC LCL EMI L
Converter N
DC

Switch Filter Filter

SPD
Filter
Environment Category Definition
PV3+ Input Circuit PE
MPPT
EMI
PV3- Circuit 3 AC SPD
Filter

Outdoor: the ambient air temperature is -20-50℃. Relative humidity range is 4-100%, applied to
DC
SPD

PV4+ Input AC Relay

PD3.
MPPT
EMI
PV4- Circuit 3
Filter

Indoor unconditioned: the ambient air temperature is -20-50℃. Relative humidity range is 5- 95%,
DC
SPD

applied to PD3.

Indoor conditioned: the ambient air temperature is 0-40℃. Relative humidity range is 5- 85%, GW35KLV-MT / GW60KN-MT / GW60KBF-MT main circuit.
applied to PD2.
PV1+ Input
MPPT
EMI
Pollution Degree Definition PV1- Circuit 1
Filter
DC
SPD

Pollution degree 1: No pollution or only dry, non-conductive pollution occurs. The pollution has PV2+ Input L1
MPPT
EMI L2

no influence.
PV2- Circuit 2 Output
Filter DC / AC L3
DC LCL EMI L
Converter N
DC

Switch Filter Filter

SPD
Filter PE
Pollution degree 2: Normally only non-conductive pollution occurs. However, a temporary
Input Circuit
PV3+ MPPT
EMI
PV3- Circuit 3 AC SPD

conductivity occasionally caused by condensation must be expected.

Filter
DC
SPD

Input AC Relay
PV4+

Pollution degree 3: Conductive pollution occurs, or dry, non-conductive pollution becomes

MPPT
EMI
PV4- Circuit 3
Filter

conductive because ofcondensation, which is expected.

DC
SPD

Pollution degree 4: Persistent conductive pollution occurs. This includes the pollution cause by
conductive dust, rain and snow.

37 38
GW70KHV-MT / GW80KBF-MT main circuit. 8 Caution
Input
Regular maintenance ensures a long operating life and optimal efficiency of the entire PV plant.
PV1+ MPPT
EMI
PV1- Circuit 1
Filter

Caution: Before maintenance, please first disconnect the AC breaker. Then disconnect the DC
DC
SPD

PV2+ Input L1

breaker. Wait 5 min until the residual voltage has been released.
MPPT
EMI L2
PV2- Circuit 2 Output
Filter DC / AC L3
DC LC EMI L
Converter
DC

Switch Filter Filter

SPD
Filter

8.1 Clearing The FAN

PV3+ Input Circuit PE
MPPT
EMI
PV3- Circuit 3 AC SPD
Filter

The MT series inverter is equipped with three fans on its left side. The fan intakes and handle
DC
SPD

PV4+ Input AC Relay

MPPT

covers should be cleaned yearly using a vacuum cleaner. For more thorough cleaning, complete-
EMI
PV4- Circuit 4
Filter

ly remove the fans.

DC
SPD

GW80KHV-MT main circuit. 1. Disconnect the AC breaker first. Then, disconnect the DC breaker.
PV1+ Input
EMI
MPPT 2. Wait 5 min until the residual voltage has been released, and the fans are no longer running.
Circuit 1
PV1-
3. Disassemble the fans (Refer to the below figure).
Filter
DC
SPD

PV2+ Input L1
• Loosen the five screws using a crosshead screwdriver. Then, slowly remove the fans out of
MPPT
EMI L2
Circuit 2 Output
PV2- Filter DC / AC L3

the cabinet about 50mm.

DC LC EMI L
Converter
DC

Switch Filter Filter

SPD
Filter PE
PV3+ Input Circuit
MPPT

• Open the lockers of the three fan connectors and remove them from housing. Then uninstall
EMI
Circuit 3 AC SPD
PV3- Filter

the fans.
DC
SPD

Input AC Relay
PV4+
MPPT
EMI
4. Clean the ventilation grid and the fans with a soft brush, or compressed air.
Circuit 4
PV4- Filter
DC
SPD

5. Reinstall the fans into the cabinet.

GW50KLV-MT / GW75KW-MT / GW80K-MT PV3 main circuit.
PV1+ Input
MPPT
EMI
PV1- Circuit 1
Filter
DC
SPD

PV2+ Input L1
MPPT
EMI L2
PV2- Circuit 2 AC
Filter DC / AC L3
DC LCL EMI
Converter N
DC

Switch Filter
SPD

Circuit Filter PE
PV3+ Input
MPPT
EMI
PV3- Circuit 3 AC SPD
Filter
DC
SPD

Input AC Relay
PV4+ MPPT
EMI
PV4- Circuit 4
Filter
DC
SPD

GW50KLV-MT / GW75KW-MT / GW80K-MT PV4 main circuit.

PV1+ Input
MPPT
8.2 Checking the DC switch
EMI

DC switch does not require any maintenance

Circuit 1
PV1- Filter
DC
SPD

Although not mandatory, maintenance below is still recommended:

PV2+ Input L1
MPPT
EMI L2
Circuit 2 AC
PV2- Filter DC / AC L3

• Check the DC switch regularly.

DC LCL EMI
Converter N
DC

Switch Filter
SPD

Circuit Filter PE
PV3+ Input
MPPT

• Activate the DC switch 10 times in a row once per year.

EMI
Circuit 3 AC SPD
PV3- Filter
DC

Operating the switch will clean the switch and will extend its life .
SPD

PV4+ Input AC Relay

MPPT
EMI
Circuit 4
PV4- Filter
DC
SPD

39 40
8.3 Turn On / Off the Inverter
Boot order:

1. Turn on the breaker on the AC side.

2. Turn on the DC switch.

3. Turn on the breaker on the DC side.

Note: If there is no switch, only perform steps 1 and 3 (please skip step 2).

Shutdown order:

1. Turn off the breaker on the AC side.

2. Turn off the DC switch.

3. Turn off the breaker on the DC side.

Note: If there is no switch, only perform steps 1 and 3 (please skip step 2).

8.4 Checking the Electrical Connection

1. Check if the AC or DC wire is loose.

2. Check to ensure the earth wire is reliably grounded.

3. Check if the waterproof covers of the RS485 and USB port are fastened.

Note: Maintenance cycle is once every half year.

8.5 Fuse Replacement

If the inverter fuses are broken, replace them quickly. The steps are as follows:

1. Disconnect the circuit breaker on the AC side.

2. Rotate the DC switch to the 'OFF' position.

3. Disconnect the front-end circuit breaker of the PV input terminal or pull out the PV input
terminal.

4. Wait at least 10 min.

5. Open the junction box's cover on the bottom of inverter.

6. Confirm that the fuses are broken.

7. Remove the broken fuses vertically as shown in the

right figure. Do not remove fuses by prying or via
similiar methods.

8. Install the same model fuses from the same

company to the corresponding fuse holders.

9. Install the junction-box cover on the inverter.

41