FoxESS E Series User manual

EN
3-6kW
E FSERIES
UserManual
Copyright Declaration
The copyright of this manual belongs to Maitian Energy Co., Ltd. Any corporation or individual should not plagiarize,
partially or fully copy (including software,etc.), and no reproduction or distribution of it in any form or by any means
is permitted. All rights reserved. Maitian Energy Co., Ltd. reserves the right of final interpretation.

Contents
1 Notes on this
Manual
···············································01
1.1 Scope of Validity
1.2 Target Group
······················································································· 01
······················································································· 01
1.3 Symbols Used························································································· 01
2 Safety Instruction················································· 02
2.1 Appropriate Usage··················································································02
2.2 Important Safety Instructions······························································· 04
2.3 Explanation of Symbols··········································································08
2.4 CE Directives·························································································· 09
3 Introduction···························································11
3.1 Basic Features························································································ 11
3.2 Terminals of Inverter············································································· 11
3.3 Dimensions·····························································································12
4 Technical Data······················································· 13
4.1 DC Input
4.2 AC Output
·································································································13
·································································································13
4.3 Efficiency, Safety and Protection··························································· 14
4.4 General Data·························································································· 14
5 Installation···························································· 15
5.1 Check for Transport Damage································································· 15
5.2 Packing List···························································································· 15
5.3 Installation Precaution··········································································· 16
5.4 Installation Steps
·····························································································
17
5.5 Connection of the Inverter····································································· 18
5.6 Run the Inverter·····················································································28
6 Operation Method··················································30
6.1 Control Panel·························································································· 30
6.2 LCD Function·························································································· 31
6.3 LCD Operation························································································ 32
7 Troubleshooting
7.1 Troubleshooting
······················································35
························································································ 35
7.2 Routine Maintenance··············································································38
8 Decommissioning·················································· 39
8.1 Dismantling the Inverter········································································39
8.2 Packaging······························································································· 39
8.3 Storage and Transportation··································································· 39

01
Danger!
“Danger” indicates a hazardous situation which, if not avoided,
will result in death or serious injury.
Warning!
“Warning” indicates a hazardous situation which, if not avoided,
could result in death or serious injury.
Caution!
“Caution” indicates a hazardous situation which, if not avoided,
could result in minor or moderate injury.
Note!
“Note” provides important tips and guidance..
1 Notes on this Manual
1.1 Scope of Validity
This product manual describes the assembly, installation, electrical connec-
tions, commissioning, maintenance and troubleshooting of E/F series inverters:
E3000
E3600
E4600
E5000
E6000
F4600
F5000
F6000
Note: “3000” = 3kW.
Keep this manual where it will be accessible at all times.
1.2 Target Group
This manual is for qualified personnel. Any qualified person will have received
training and have demonstrated skills and knowledge in the installation and
operation of this device. Qualified personnel are trained to deal with the
dangers and hazards involved in installing electrical devices of this nature.
1.3 Symbols Used
The following types of safety instructions and general information appear in this
document as described below:

02
2 Safety Instruction
2.1 Appropriate Usage
The E/F Series are PV inverters which can convert the DC current of the PV
generator into AC current and feed it into the public grid.

03
Warning!
Over-voltage protection with surge arresters should be provided
when the PV power system is installed.
The grid connected inverter is not fitted with SPDs in either the PV
input side or the MAINS side.
Surge protection devices (SPDs) for PV installation
Lightning will cause a damage either from a direct strike or from surges due
to a nearby strike.
Induced surges are the most likely cause of lightning damage in the majority
of installations, especially in rural areas where electricity is usually provided
by long overhead lines. Surge may affect both the PV array conduction and
the AC cables leading to the building.
Specialists in lightning protection should be consulted during the end use
application. Using appropriate external lightning protection, the effect of a
direct lightning strike into a building can be mitigated in a controlled way,
and the lightning current can be discharged into the ground.
Installation of SPDs to protect the inverter against mechanical damage and
excessive stress include a surge arrester in case of a building with external
lightning protection system (LPS) when separation distance is kept.
To protect the DC system, surge suppression device (SPD type2) should be
fitted at the inverter end of the DC cabling and at the array located
between the inverter and the PV generator, if the voltage protection level (
VP) of the surge arresters is greater than 1100V, an additional SPD type 3
required for surge protection for electrical devices.
To protect the AC system, surge suppression devices (SPD type2) should be
fitted at the main incoming point of AC supply (at the consumer’s cutout),
located between the inverter and the meter/distribution system; SPD (test
impulse D1) for signal line according to EN 61632-1.

04
Danger!
The components in the inverter are live. Touching live compo-
nents can result in serious injury or death.
Do not open the front cover of the inverter. Apart from perform-
ing work at the wiring terminal (as instructed in this manual),
touching or changing components without authorization may
cause injury to people, damage to inverters and annulment of
the warranty.
Electrical installation, repairs and conversions may only be
carried out by electrically qualified persons.
Do not touch damaged inverters
All DC cables should be installed to provide as short a run as possible, and
positive and negative cables of the string or main DC supply should be
bundled together, avoiding the creation of loops in the system. This require-
ment for short runs and bundling includes any associated earth bundling
conductors.
Spark gap devices are not suitable to be used in DC circuits once conduct-
ing, they won’t stop conducting until the voltage across their terminals is
typically less than 30 volts.
Anti-Islanding Effect
Islanding effect is a special phenomenon where grid-connected PV systems
still supply power to the nearby grid when a loss of voltage occurs.. It is
dangerous for maintenance personnel and the public. E/F series provide
Active Frequency Drift (AFD) to prevent islanding effect.
2.2 Important Safety Instructions
The E/F Series are PV inverters which can convert the DC current of the PV
generator into AC current and feed it into the public grid.

05
Danger!
Persons with limited physical or mental abilities may only work
with the FoxESS inverter following proper instruction and under
constant supervision. Children are forbidden to interfere with the
inverter.
Warning!
Ensure the output voltage of the proposed PV array is lower than
the maximum rated input voltage of the inverter; otherwise
the inverter may be damaged and the warranty annulled.
Warning!
Authorized service personnel must disconnect both AC and DC
power from E/F series before attempting any maintenance or
cleaning or working on any circuits connected to the E/F series.
Warning!
Do not operate the inverter when the device is running.
Warning!
Risk of electric shock!
To avoid electric shock, DC input and AC output of the inverter
must be disconnected. Wait at least 5 minutes before
performing any installation or maintenance.
Danger!
Danger to life due to high voltages in the inverter.
There is residual voltage in the inverter. The inverter takes 20
minutes to discharge.

06
Note!
Grounding the PV modules
The E/F series are transformerless inverters. That is why they have
no galvanic separation. Do not ground the DC circuits of the PV
modules connected to the E/F series. Only ground the mounting
frame of the PV modules. If you connect grounded PV
modules to the E/F series, the error message "IsolationFault" will
appear.
Comply with the local requirements for grounding the PV
modules and the PV generator. FoxESS recommends connect-
ing the generator frame and other electrically conductive
surfaces in a manner which ensures continuous conduction and
ground these in order to have optimal protection of system and
persons.
Caution!
The temperature of some parts of the inverter may exceed 60℃
during operation. To avoid being burnt, do not touch the
inverter during operation. Let it cool before touching it.
• Prior to the application, please read this section carefully to ensure correct
and safe application. Please keep the user manual properly.
• Use only attachments recommended or sold by FoxESS. To do otherwise may
result in a risk of fire, electric shock, or injury to person.
• Make sure that existing wiring is in good condition and that wire is not
undersized.
• Do not disassemble any parts of inverter which are not mentioned in installa-
tion guide. It contains no user-serviceable parts. See the warranty policy or
instructions
on obtaining service. Attempting to service the E/F Series inverter yourself may
result in a risk of electric shock or fire and will void your warranty.

07
• Keep away from flammable, explosive materials to avoid fire disaster.
• The installation location should be away from areas where humidity is high or
where the inverter is in close proximity to corrosive substances.
Authorized service personnel must use insulated tools when installing or working
with this equipment.
• PV modules shall have an IEC 61730 class A rating.
• Never touch either the positive or negative pole of PV connecting device,
and touching both of them at the same time is strictly prohibited.
• The unit contains capacitors that remain charged to a potentially lethal
voltage after the MAINS and PV supply has been disconnected.
• Hazardous voltage will present for up to 5 minutes after disconnection from
power supply.
• CAUTION-RISK of electric shock from energy stored in capacitors. Never
operate on the solar inverter couplers, the mains cables, PV cables or the PV
generator when power is applied. After switching off the PV and mains,
always wait for 5minutes to let the intermediate circuit capacitors discharge
before you unplug DC and mains couplers.
• When accessing the internal circuit of thesolar inverter, it is very important
to wait 45 minutes before operating the power circuit or demounting the
electrolyte capacitors inside the device. Do not open the device before the
time limit since the capacitors require time to sufficiently discharge!
• Measure the voltage between terminals UDC+ and UDC- with a multi-meter
(impedance at least 1Mohm) to ensure that the device is discharged before
beginning work (35VDC) inside the device.
PE Connection and Leakage Current
• The end-use application shall monitor the protective conductor by residual
current operated protective device (RCD) with rated fault current Ifn≤240mA
which automatically disconnects the device in case of a fault.
• DC differential currents are created (caused by insulation resistance and
through capacities of the PV generator). In order to prevent unwanted trigger-
ing during operation, the rated residual current of the RCD has to be min
240mA.
The device is intended to connect to a PV generator with a capacitance limit of
approx. 700nf.

08
Warning!
High leakage current!
Earth connection essential before connecting supply.
• Incorrect grounding can cause physical injury, death or equipment malfunc-
tion and increase electromagnetic interference.
• Make sure that grounding conductor is adequately sized as required by
safety regulations.
• Do not connect the ground terminals of the unit in series in case of a multi-
ple installation. This product can cause current with a DC component. Where a
residual current operated protective (RCD) or monitoring (RCM) device is used
for protection in case of direct or indirect contact, only an RCD or RCM of type B
is allowed on the supply side of this product.
For United Kingdom
• The installation that connects the equipment to the supply terminals shall
comply with the requirements of BS 7671.
• Electrical installation of PV system shall comply with requirements of BS 7671
and IEC 60364-7-712.
• No protection settings can be altered.
• User shall ensure that equipment is so installed, designed and operated to
maintain at all times compliance with the requirements of ESQCR22(1)(a).
• For Australia and New Zealand
• Electrical installation and maintenance shall be conducted by licensed
electrician and shall comply with Australia National Wiring Rules.
2.3 Explanation of Symbols
This section gives an explanation of all the symbols shown on the inverter and
on the type label.

09
CE mark.
The inverter complies with the requirements of the applicable
CE guidelines.
Beware of hot surface.
The inverter can become hot during operation. Avoid contact
during operation.
Danger of high voltages.
Danger to life due to high voltages in the inverter!
Danger.
Risk of electric shock!
Danger to life due to high voltage.
There is residual voltage in the inverter which needs 5 min to
discharge.
• Wait 5 min before you open the upper lid or the DC lid.
TUV certification
Read the manual
Product should not be disposed as household waste
2.4 CE Directives
This chapter follows the requirements of the European low voltage directives,
which contains the safety instructions and conditions of acceptability for the
system, which you must follow when installing, operating and servicing the unit.
If ignored, physical injury or death may follow, or damage may occur to the unit.
Read these instructions before you work on the unit. If you are unable to
understand the dangers, warnings, cautions or instructions, please contact
an authorized service dealer before installing, operating and servicing the unit.
The Grid connected inverter meets the requirement stipulated in Low Voltage
Directive (LVD) 2014/35/EU and Electromagnetic Compatibility (EMC) Directive
2014/30/EU. The unit is based on: EN 62109-1:2010; EN 62109-2:2011;
IEC62109-1(ed.1); IEC62109-2(ed.1) EN 61000-6-3:2007+A:2011; EN
61000-6-1:2007; EN 61000-6-2:2005

10
In case of installation in PV system, startup of the unit (i.e. start of designated
operation) is prohibited until it is determined that the full system meets the
requirements stipulated in EC Directive (2014/35/EU,2014/30/EU, etc.)
The grid connected inverter leave the factory completely connecting device
and ready for connection to the mains and PV supply, the unit shall be
installed in accordance with national wiring regulations. Compliance with
safety regulations depends upon installing and configuring system correctly,
including using the specified wires. The system must be installed only by profes-
sional installers who are familiar with requirements for safety and EMC. The
installer is responsible for ensuring that the end system complies with all the
relevant laws in the country where it is to be used.
The individual subassembly of the system shall be interconnected by means of
the wiring methods outlined in national/international such as the national
electric code (NFPA) No.70 or VDE regulation 0107.

11
3 Introduction
3.1 Basic features
Congratulations on your purchase of an E/F Series inverter from FoxESS. The E/F
Series inverter is one of the most advanced inverters on the market today,
incorporating state-of-the-art technology, high reliability and convenient control
features.
· Advanced DSP control technology.
· Utilizes the latest high-efficiency power component.
· Optimal MPPT technology.
- Two independent MPP Tracking.
- Wide MPPT input range.
· Advanced anti-islanding solutions.
· IP65 protection level.
· Max. efficiency up to 97.4%.EU efficiency up to 96.8%. THD<3%.
· Safety & Reliability: transformerless design with software and hardware protection.
· Export limitation (CT/Meter/DRM0/ESTOP).
· Power factor regulation. Friendly HMI.
- LED status indications.
- LCD display technical data, human-machine interaction through touch key.
- PC remote control.
- Upgrade through USB interface.
3.2 Terminals of inverter

12
Warning!
Only authorized personnel are allowed to set the connection.
402mm
476.5mm
148mm
Object
A
B
C
D
E
F
G
H
I
Description
PV 1
PV 2
DC Switch (optional)
Waterproof Lock Valve
COM
USB
WiFi
AC Connector
Ground screw
3.3 Dimensions
Dimensions
E3000, E3600, E4600, E5000, E6000 F4600, F5000, F6000

13
4 Technical Data
4.1 DC input
Model
E3000
E3600
E4600 E5000 E6000
Max. recommended DC power [W]
3900
4680
F4600
5980
F5000
6500
F6000
7800
Max. DC voltage[V]
600
600
600
600
600
Nominal DC operating voltage[V]
360
360
360
360
360
MPPT voltage range [V]
80-550
80-550
80-550
80-550
80-550
MPPT voltage range @ full load [V]
130 -550
150 -550
200 -550
210 -550
250 -550
Max. input current [A]
12.5/12.5
12.5/12.5
12.5/12.5
12.5/12.5
12.5/12.5
Max. short circuit current [A]
15/15
15/15
15/15
15/15
15/15
Start output voltage [V]
120
120
120
120
120
No. of MPP trackers
2
2
2
2
2
Strings per MPP tracker
1
1
1
1
1
DC disconnection switch
Optional
4.2 AC output
Model
E3000
E3600
E4600
E5000
E6000
Displacement power factor
Feed in phase
Over voltage category
1 (Adjustable from 0.8 leading to 0.8 lagging)
single-phase
PV:OVC II Mains: OVC III
Rated output power [W]
3000
3600
F4600
4600
F5000
5000
F6000
6000
Max.apparent AC power [VA]
3300
3960
5060
5500
6000
Rated grid voltage and range [V]
220/230/240
Rated AC frequency and range [Hz]
50 /60
AC nominal current [A]
13.0
15.7
20.0
21.7
26.1
Max. output fault current [A]
14.3
17.2
22.0
23.9
26.1
Max. inverter backfeed current to
the array(mA)
0
THD
<3%

14
4.3 Efficiency, Safety and Protection
Model
E3000
E3600
E4600
E5000
E6000
F4600
F5000
F6000
Max. MPPT efficiency
99.00%
99.00%
99.00%
99.00%
99.00%
Euro efficiency
96.80%
96.80%
96.80%
96.80%
96.80%
Max. efficiency
97.40%
97.40%
97.40%
97.40%
97.40%
Safety & Protection
DC Reverse-polarity
protection
YES
Insulation monitoring
YES
DC injection monitoring
YES
AC Short-circuit protection
YES
Residual current detection
YES
Anti-islanding protection
YES
AC Output overcurrent
protection
YES
AC Output overvoltage
protection
YES
4.4 General Data
Model
E3000
E3600
E4600
E5000
E6000
F4600
F5000
F6000
Dimension [W/H/D](mm)
360*370*12 8
（
E series
）
476.5*402*148
（
F series
）
Net weight [kg]
13.5 （ E series ） 15.5 （ F series ）
Installation
Wall-mounted
Operating temperature range[ ℃ ]
-20...+60 (derating at 45)
Storage temperature [℃]
-40...+70
Storage/Operation relative humidity
0%~100%, no condensation
Max. Operating Altitude
3000m (derating when>2000m)
Ingress Protection
IP65(for outdoor use)
Isolation type
Transformerless
Protective Class
Ⅰ
Night-time consumption
<1W
Pollution Degree
Ⅱ
cooling
Natural
Noise level
＜30dB
Monitoring Module(optional)
External WIFI/GPRS
Communication
Meter/CT/DRM/USB updat/RS485

15
A
B
C
D
E
F
L
M
N
5 Installation
5.1 Check for Transport Damage
Make sure the inverter is intact during transportation. If there is visible damage,
such as cracks, please contact your dealer immediately.
5.2 Packing List
Open the package and remove the product, checking the accessories as
shown below.
G
H
I
J
K
Object
Quantity
Description
Object
Quantity
Description
A
1
FoxESS series inverter
I
1
Communication
connector
B
1
Bracket
J
1
Product manual
C
4
DC connector
L
1
Quick installation guide
D
1
AC connector
M
1
CT (Optional)
E
3
Expansion tube
N
1
WiFi/GPRS (Optional)
F
3
Expansion screw
O
1
Meter (Optional)
G
4
DC pin contact
(2*positive, 2*negative )
H
1
Earth terminal

16
No direct sunlight No rain exposure No snow buildup Direct sunlight Rain exposure Snow lay up
Position
Min Size
Left
30cm
Right
30cm
Top
30cm
Bottom
30cm
Front
30cm
5.3 Installation Precaution
E/F Series inverters are designed for outdoor installation (IP65). Make sure the
installation location meets the following conditions:
· Not in direct sunlight.
· Not in areas where highly flammable materials are stored. Not in potential
explosive areas.
· Not in the cool air directly.
· Not near the television antenna or antenna cable.
· Not higher than altitude of 3000m above sea level.
· Not in environment of high precipitation or humidity (＞95%).
· Be sure the ventilation is adequate.
· The ambient temperature in the range of -20℃to +60℃.
· The slope of the wall should be within ±5°.
· The wall where the inverter is mounted should meet conditions below:
1.
Solid brick/concrete, or strength equivalent mounting surface;
2. Inverter must be supported or strengthened if the wall’s strength isn’t
sufficient (such as wooden wall or where the wall is covered by thick layer of
decoration)
Please avoid direct sunlight, rain exposure, or the build-up of snow during
installing and operat ion .
Available Space Size