LogicPower EA33KTLSI User manual

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Table of Contents
1 Important Safety Instructions............................................................................................................................................2
2 Product Overview.............................................................................................................................................................3
2.1 Product description............................................................................................................................................... 3
2.2 Product features.................................................................................................................................................... 3
2.3 Working principle ..................................................................................................................................................4
2.4 Product view .........................................................................................................................................................5
3 Installation........................................................................................................................................................................7
3.1 Inspection before installation.................................................................................................................................7
3.2 Transport............................................................................................................................................................... 7
3.3 Mounting...............................................................................................................................................................8
4 Electrical Connection........................................................................................................................................................9
4.1 Cable sizes ...........................................................................................................................................................9
4.2 Making PV input cable and assembling connector................................................................................................ 9
4.3 Making the inverter output cable and installation instructions..............................................................................11
4.4 Making RS485 communication cable and connecting......................................................................................... 12
5 LED Indicator Lights.......................................................................................................................................................12
5.1 LED status information........................................................................................................................................ 12
5.2 View alarm information ....................................................................................................................................... 13
6 Operation .......................................................................................................................................................................14
6.1 Switching On and Off.......................................................................................................................................... 14
6.2 Operation modes ................................................................................................................................................ 15
6.3 Monitoring mode................................................................................................................................................. 16
7 Solar AssistantAPP Operation Manual ..........................................................................................................................17
7.1 Local monitoring APP (iOS &Android) installation.............................................................................................. 17
7.2 Operation of Solar Assistant APP（IOS）.......................................................................................................... 18
7.3 Operation of Solar Assistant APP（ANDROID）................................................................................................ 20
7.4 How to distinguish Wi-Fi hotspot......................................................................................................................... 23
8 Troubleshooting..............................................................................................................................................................24
Appendix A........................................................................................................................................................................27

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1 Important Safety Instructions
Read the manual carefully to become familiar with the equipment before attempting to install, operate, service or
maintain the inverter. Store the manual and other data attached to the product at an easily accessible location.
As standards, specifications and designs are changed from time to time, users should comply with the actual product
purchased if there is any discrepancy between the actual product and the content of the manual.
The product is designed and tested in accordance with international safety requirements, but as with all electrical and
electronic equipment, certain precautions must be observed when installing and operating the product. To reduce the
risk of personal injury and ensure the safe installation and operation of the product, you should carefully read and follow
all instructions, cautions and warnings in this manual.
The following safety message may appear throughout this manual or on the product to warn of potential hazards to call
attention.
Symbol
Description
WARNING
WARNING indicates a hazardous situation which, if not avoided, could result in
serious damage or personal injury.
DANGER
DANGER! HAZARD OF ELECTRIC SHOCK
DANGER indicates a hazard of electric shock, if not avoided, could result in
death or serious injury.
TIPS
TIPS indicate the important information for users to optimize PV system.
Description
Description indicates additional information in the manual, which emphasizes
or supplements on the contents, provides with tips or tricks of the product to
help you solve some problems or save your time.
Safety precautions
WARNING
WARNING! HAZARD OF ELECTRIC SHOCK
EA33/40KTLSI Grid-connected PV inverter must be installed, operated,
serviced and maintained only by trained electrically qualified persons.
Never touch live components in PV system during operating of the inverter.
Follow all safety instructions in this manual.
WARNING
WARNING! Damage to inverter
Input DC voltage must be less than 1000 V, as excessive high voltage may
result in equipment damage.
Inverter should be correctly transported, stored, assembled, installed, operated and maintained.
All operations and wiring should be performed by professional electrical or mechanical engineers so as to ensure
that all electrical installation is in accordance with relevant standard. And in order to ensure safe operation, it is
required to provide correct earthing and necessary short-circuit protection.
Ensure no electricity at DC andAC side before inspection or maintenance.
PV arrays should be covered with lightproof material when they are installed in daytime, otherwise PV arrays will
cause high voltage under sunlight.
After finishing installation or maintenance, firstly close up the AC circuit breaker, and then switch DC power. When
switching DC power, please close up the inverter DC input switch first.
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Follow all instructions in the manual, and completely comply with all danger, warning and safety information.
Storage
If the inverter does not come into use at once, users need to store the inverter and note the following instructions:
Do not unpack.
Maintain a storage temperature of -40℃～+70℃and relative humidity of 5% RH ~ 100% RH.
Storage place free from vibration, conductive dust, direct sunlight and moisture.
The maximum stacking is four floors, excessive stacking may cause equipment damage.
Regular checking is required during storage. Replace packaging if find out any damage by rats or vermin.
After long term storage, the inverter can not come into use until checking by qualified personnel.
2 Product Overview
2.1 Product description
EA33/40KTLSI Grid-connected Inverters apply to PV grid-connected power generation system. In the PV system,
they constantly enable solar panels to output maximum power, and deliver the converted energy from solar panel to
power grid. The PV grid-connected power generation system is composed of PV modules, PV grid-connected
inverters, AC combiner boxes, metering devices and power distribution system, as shown in the Figure 1.
Fig. 1 PV grid-connected power generation system
TIPS
Connecting the product to the electrical utility grid should be approved by the local utility
company, and the connection and operation must be made only by qualified personnel.
2.2 Product features
More energy generated
Transformerless design, maximum conversion efficiency up to 98.6%, Europe efficiency up to 98.4%;
Three MPP inputs, acquiring maximum energy generated by shadowed PV cells
Wide MPPT voltage range (320 ~ 900V), longer daily power generation time
PV modules
PV grid-connected
inverter
Metering device
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AC combiner
box
Grid

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Intelligent MPPT algorithm, the maximum power point tracking is not affected by abrupt change of illumination
Accurate identification technology for power change guarantees accurate and stable static MPPT;
Wide operating temperature range (–25 °C ~ + 60 °C), continuous power generation at full load in high temperature
High reliability
Long lifetime design of film capacitor, 25 years of designed service life for complete machine
Natural heat dissipation, waterproof, dust resistance, salt fog resistance and corrosion resistance
Active+passive islanding protection, grid-connected relay redundancy disconnection protection
Multilayer, step-by-step overcurrent, overvoltage, overtemperature and short-circuit protections for software and
hardware
6 strings fault monitoring with rapid positioning
Advanced control technology
Double modulation of three level SPWM and SVPWM, natural and smooth switchover
Adaptive control, adapting to harsh weak power grids environment
Harmonic current compensation, THD < 1%
Supporting active and reactive power grid dispatch and SVG function at night
LVRT function
User-friendly and flexible
Status display with LED indicators, concise interface
Built-in DC SPD and fuse, no need of DC combiner box, reducing cost for users
DC shut-off circuit breaker for safe and convenient maintenance operating
IP 65 protection level for outdoor use
Wall mounting design, one-step forming of aluminum shell
Standard RS485 / APP / GPRS / Wi-Fi / Bluetooth communications; Optional PLC viewing the system operation
information
2.3 Working principle
Figure 2 shows the schematic diagram of EA33//40KTLSI inverter. Electric energy generated by PV module passes
through lightning arrester which absorbs surge voltage at DC side, and capacitive energy storage maintains DC
voltage stable. With the application of three-level SPWM and SVPWM dual modulation, three-phase full-bridge
inverter transforms DC power into AC power with the same frequency and phase as power grid, and sine wave AC
power is generated through filter, high-frequency signal conducted interference is restrained by AC filter, then the
electric energy is sent to the power grid.
Fig. 2 Schematic diagram of EA33/40KTLSI inverter

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2.4 Product view
Front panel
Bottom panel
Rear panel
11 Handle arm
11 Handle arm
13 Hanging backboard
12 Radiator
4 RS485/NET
2 DC switch
3 PV connectors
10 NET port
7 Air vent valve
6 AC connectors
1 LED indicators
8 External Wi-Fi antenna
9 Grounding
5 USB port
13 Hanging backboard

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NO.
Name
Description
Front
1
LED Indicators
Indicate inverter status
Bottom
2
DC switch
Control PV input
3
PV connectors
Connect with PV battery
4
RS485/NET
RS485/NET Port
5
USB port
USB port
6
AC connectors
Connect with three-phase AC
7
Air vent valve
Waterproof and breathable
8
External Wi-Fi antenna
External antenna of Wi-Fi module
9
Grounding
Insulation equipment enclosure grounding
10
NET port
NET port
Rear
11
Handle arm
Convenient for handling and installation
12
Radiator
Reduce temperature of inverter power device
13
Hanging backboard
Hang inverter on the wall
Inside
Remove the lower cover of the inverter to see components inside
Remove this cover to
see components inside
2 Communication Lightning protection board
3AC terminals
1 Fan

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No.
Name
Description
1
Fan
Enhance radiating capacity of radiator
2
Communication Lightning protection board
prevent RS485 and Ethernet cable from lightning strike
3
AC terminals
connect three-phase AC power
4
DC rotary switch
Switch On/Off DC input
5
DC fuse holder / fuse
Avoid damage to the components inside caused by
excessive DC current
6
DC lightning arrester
Avoid damage to the components inside caused by
lightning strike
WARNING
To avoid the risk of electric shock, do not disassemble the cover of the inverter
Make sure the power is completely disconnected before wiring.
3 Installation
3.1 Inspection before installation
EA33/40KTLSI grid-connected inverter has been tested carefully before delivery, while it may be damaged in
transportation. Do not power on and notify the carrier and dealer if find damaged or parts missing.
3.2 Transport
Follow these instructions in the manual to handle with EA33/40KTLSI inverter. Avoid risk of injury due to the inverter
falling during transport.
WARNING
Take the weight and dimensions of the inverter into account. Watch out for falling and
collision during transport.
4 DC rotary switch
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5 DC fuse holder / fuse
6 DC lightning arrester

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Two operators hold the handle arms at two sides of inverter, as shown in Figure 3, take out the inverter from the
packing box and carry it to the installation location.
Fig 3 Handling method
3.3 Mounting
CAUTION
Danger to life if installed in improper locations
The mounting location or bracket must be suitable for the weight and
dimensions of the inverter.
CAUTION
Carefully aim at the position and gently hang the inverter on the mounting
frame. Falling may result in damage to inverter or danger to life.
EA33/40KTLSI inverter is suited for indoor and outdoor installation and corresponds to degree of protection IP65.
Mount on a solid support surface. It must be suitable for the weight and dimension of the inverter. The mechanical
dimension of EA33/40KTLSI is 580mmx820mmx255mm (WxHxD), weigh about 65kg.
In order to maintain sufficient ventilation and service access, a clearance between the inverter and surrounding
objects should be observed as following (as shown in Figure 4) : ≥ 200mm at the sides; ≥ 500mm at the top; ≥
300mm at the underside; ≥ 1000mm from the front.
According to the EMC and noise level, the inverter is applicable to industrial environment and should be installed
away from living area as far as possible.
Mount vertically or tilted backwards by max. 15°. Never mount it with a forward tilt. The wiring terminal should be
down.
Place the wall mounting bracket (see Figure 5) against a suitable wall with explosion screws, aim the groove of the
hanging backboard of the inverter at the convex edge of the wall mounting bracket, then attach the inverter to the
wall mounting bracket.
Fig. 4 Minimum clearance Fig. 5 Wall mounting bracket

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4 Electrical Connection
DANGER
Before the electrical connection, make sure that the inverter is undamaged and in a
safe state.
Before connecting DC terminal cables, ensure the inverter DC switch is
disconnected or PV panels are covered with lightproof material.
All cables must be firmly connected, well insulated and meet the specification
requirements.
The open-circuit voltage of configured PV arrays must be less than 900V.
WARNING
Electrical connection should only be made by electrically qualified personnel.
Prohibit electrical installation under the state of electricity, otherwise it may result in
damage to inverter or danger to life.
TIPS
Connecting the inverter to the electrical utility grid should be approved by the local
utility company
4.1 Cable sizes
Cable
Cable size (mm2)
PV array DC＋
Provide 6 inputs, cable diameter > 4mm2
PV array DC-
Provide 6 inputs, cable diameter > 4 mm2
Power grid L1 phase
Provide single input, cable diameter > 10 mm2
Power grid L2 phase
Provide single input, cable diameter > 10 mm2
Power grid L3 phase
Provide single input, cable diameter > 10 mm2
Power grid N
Cable diameter > 10 mm2
Ground wire
Cable diameter > 8 mm2
TIPS
The above table of cable size is based on UL, If use other cables, refer to the
standard for reasonable replacement.
For actual installation cable size, refer to the output value of equipment
specifications.
4.2 Making PV input cable and assembling connector
Step 1: Strip the insulation layer from DC cable about 6mm to expose copper wire, insert the copper wire into the metal
tube core of connector and press it firmly with a crimping plier.
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-pole input terminal and tube core
+ pole input terminal and tube core
Strip the cable, insert it into tube core and press it firmly with a crimping plier
Step 2: Loosen the terminal cap and lead cable through the cap. Insert tube core into wire slot until the connection is
completed.
Step 3: Tighten the terminal cap.