EG4 8KEXP-240 User manual

EG4 Electronics www.eg4electronics.com
USER MANUAL
EG4 8KEXP-240
HYBRID INVERTER/CHARGER
8000W 120/240 VAC
Version 1.0.0 - November 2022
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Table of Contents
1. NOTES ON THIS MANUAL…………………………………………………………..2
1.1 SCOPE OF VALIDITY………………………………………………………………………………………………..2
1.2 TARGET GROUP ……………………………………………………………………………………………………..2
1.3 SYMBOLS USED………………………………………………………………………………………………………2
2. SAFETY...………………………………………………………………………………..3
2.1 IMPORTANT SAFETY INSTRUCTIONS………………………………………………………………………..3
2.2 EXPLANATION OF SYMBOL………………………………………………………………………………………7
3. INTRODUCTION...…………………………………………………………………....8
3.1 BASIC FEATURES…………………………………………………………………………………………………...8
3.2 SYSTEM DIAGRAM………………………………………………………………………………………………….8
3.3 WORK MODES………………………………………………………………………………………………………11
3.4 DIMENSION………………………………………………………………………………………………………….12
3.5 TERMINALS OF PV INVERTER…………………………………………………………………………………13
4. TECHNICAL PARAMETERS..……………………………………………………...14
4.1 INVERTER SPECIFICATION…………………………………………………………………………………….14
5. INSTALLATION………………………………………………………………………16
5.1 CHECK FOR PHYSICAL DAMAGE……………………………………………………………………………..16
5.2 PACKING LIST……………………………………………………………………………………………………….16
5.3 MOUNTING…………………………………………………………………………………………………………..17
6. ELECTRICAL CONNECTION……………………………………………………….20
6.1 PV CONNECTION…………………………………………………………………………………………………..20
6.2 GRID CONNECTION (GEN CONNECTION)...................................................................21
6.3 BACK-UP:LOAD1 AND LOAD2 CONNECTION…………………………………………………………….22
6.4 BATTERY CONNECTION…………………………………………………………………………………………24
6.5 METER CONNECTION…………………………………………………………………………………………….26
6.6 WIFI CONNECTION (OPTIONAL)...............................................................................27
6.7 GPRS CONNECTION (OPTIONAL)..............................................................................27
6.8 CT INSTALLATION INSTRUCTIONS………………………………………………………………………...27
7. LCD OPERATION…………………………………………………………………….29
7.1 CONTROL PANEL…………………………………………………………………………………………………..29
7.2 INSTRUCTIONS FOR LED INDICATOR……………………………………………………………………..29
7.3 INSTRUCTIONS FOR THE USE OF THREE MODES…………………………………………………….30
8. LCD OPERATION…………………………………………………………………….32
8.1 LCD OPERATION……………………………………………………………………………………………………32
8.2 SETTING………………………………………………………………………………………………………………37
9. FAULT DIAGNOSIS AND SOLUTIONS..………………………………………..51
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1 Notes on this Manual
1.1 Scope of Validity
This manual describes installation, commissioning, operation, and troubleshooting. Please read
the manual fully and carefully before installing and operating. This manual provides basic safety and
installation guidelines as well as information on tools and wiring. Keep this manual for future use.
1.2 Target Group
This manual is for qualified electricians and owner/builders with qualified electrician
oversight.
1.3 Symbols Used
The following types of safety instructions and general information appear in this document as
described below:
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2 Safety
2.1 Important Safety Instructions
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●Please keep this user manual for future use. Always follow the precautions, and safety
instructions in this document. EG4 will not be liable for any consequence caused by the violation
of the safety regulations, design, production, and usage standards.
●Only accessories included with the inverter shipment are recommended for use with the inverter.
Modification or unapproved components 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 the inverter which are not mentioned in the installation guide. It
contains no user-serviceable parts. See Warranty for instructions on obtaining service. Attempting
to service the inverter yourself may result in a risk of electric shock or fire and will void your
warranty.
●Keep away from flammable, explosive materials to avoid possible fires.
●The installation place should be away from humid or corrosive substances.
●Authorized service personnel must use insulated tools when installing or working with this
equipment.
●Never touch either the positive or negative pole of a PV connecting device. Never touch both of
them at the same time.
●The unit contains capacitors that remain charged to a potentially lethal voltage after the
utility, battery and PV supply has been disconnected.
●Hazardous voltage will present for up to 5 minutes after disconnection from the power supply.
●CAUTION-RISK of electric shock from energy stored in capacitor, never perform maintenance on
the inverter couplers, utility cables, battery cables, or PV cables while power is applied. After
switching off the PV, battery and utility; wait for 5 minutes to let the intermediate circuit
capacitors discharge before unplugging PV, battery, and utility couplers.
●When accessing the internal circuit of the inverter, it is very important to wait 5 minutes before
operating the power circuit or demounting the electrolyte capacitors inside the device. Do not
open the device beforehand since the capacitors require time sufficiently discharge!
●Please use surge protection devices (SPDs) for PV installation.
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