X3-30K-LV Mega Three Phase Grid Tied PV String Inverter
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Specifications
- Model: X3-(30K/36K)-LV, X3-(50K/60K)-TL
- Quality Warranty Period: 60 months
Product Usage Instructions
Installation of PV Strings
Route connecting for the installation of PV strings per inverter
model is shown in the table below:
| Model | 30K/50K | 36K/60K |
|---|---|---|
| MPPT1 | 3 routes | 3 routes |
| MPPT2 | 3 routes | 3 routes |
| MPPT3 | 2 routes | 3 routes |
| MPPT4 | 2 routes | 3 routes |
Determining Installation Position
The inverter must be installed in a place free from direct
exposure to sunlight, rain, and snow to extend its service
life.
Installation Space Requirements
Reserve enough clearance around the inverter to ensure
sufficient space for installation and heat dissipation:
- 400mm distance between inverters’ lateral sides
- 600mm between inverters’ top and/or bottom sides
- 1000mm clearance between inverters’ front sides
FAQs
Q: What is the quality warranty period for the inverter?
A: The quality warranty period for the inverter is 60
months.
Q: What are the potential reasons for voiding the warranty or
liability?
A: The warranty or liability will be void if damage is caused by
various factors including expired warranty period, damage during
transit, force majeure, operation in adverse environments,
installation beyond national standards, unauthorized modifications,
and ignoring safety precautions.
Q: How many routes are there for PV strings installation for
each inverter model?
A: For the 30K/50K model, there are a total of 10 routes, and
for the 36K/60K model, there are a total of 12 routes.
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A Guide to Quick Installation Three-phase Grid-tied PV String Inverter:
X3-(30K/36K)-LV X3-(50K/60K)-TL
Please scan the two-dimensional code to download the APP
Quality Guarantee
Where otherwise agreed to in a contract, quality warranty period of the inverter is 60 months. The PV inverter defective or damaged within its quality warranty period shall be repaired or replaced for free. However, warranty or liability will be void if damage is caused from below operations/situations:
1. The warranty period expired; 2. The damage caused during transit; 3. The damage caused by force majeure including, but not restricted to the following:
earthquake, flood, fire, explosion, debris flow etc; 4. Operation in adverse environments beyond that described in User Manual; 5. Any installation and operation environment beyond the relevant national standards; 6. Any installing, reconfiguring, or using faulty; 7. Any revising the product or modifying its software code without authorization; 8. Maintenance faulty caused by the technician personnel unauthorized; 9. Any operation ignoring the safety precautions stipulated in User Manual;
Symbol Conventions
Read through the safety symbols used in this manual, which highlight potential safety risks and important safety information, before using the inverter.
Symbol DANGER
Description
Indicates an imminently hazardous situation which, if not correctly followed, will result in serious injury or death.
WARNING
Indicates a potentially hazardous situation which, if not correctly followed, could result in serious injury or death.
CAUTION NOTICE NOTE
Iindicates a potentially hazardous situation which, if not correctly followed, could result in moderate or minor injury.
Indicates a potentially hazardous situation which, if not correctly followed, could result in equipment failure to run, or property damage.
Calls attention to important information, best practices and tips: supplement additional safety instructions for your better use of the PV inverter to reduce the waste of your resource.
Outline and Dimensions
855
275
500
MPPT1
MPPT2 MPPT3 MPPT4
Route connecting for PV strings installation
Route connecting for the installation of PV strings per inverter model is shown in below table: 30K/50K totally 10 routes and 36K/60K totally 12 routes.
Model 30K/50K 36K/60K
MPPT1 3 routes 3 routes
MPPT2 3 routes 3 routes
MPPT3 2 routes 3 routes
MPPT4 2 routes 3 routes
Installation
The deliverables in the fittings of inverter
G
H
Items A B C D E
F
G H
Deliverables The inverter Rear panel File package DC terminal connector group 30K/50K(10*2)/36K/60K(12*2) M6 screw Bolt group (including screw, nut)*3 (reserved for tighteningthe support and rear panel) Insulated end sleeve terminals Removal tool for DC connectors
Determining the Installation Position
The inverter must be installed on the place where is free from direct exposure to sunlight, rain, and snow to extend its service life.
Installation Space Requirements
Reserve enough clearance around the inverter to ensure sufficient space for installation and heat dissipation, as shown in below Figure. When installing multiple inverters, ensure 400mm distance between inverters` lateral sides, 600mm between inverters` top and/or bottom sides, and 1000mm clearance between inverters` front sides.
>400
>600
>400
>1000
>600
Support-mounting the inverter
Step 1 Support-mounting the inverter is recommended. Tighten the support and rear panel using M12 bolt and the required torque is 42N.m.
640 400
14
Step 2 Mount the inverter on the rear panel and tighten the inverter with the rear panel by locking screws at the bottom of the inverter.
192.5
Anti-theft lock is recommended to be installed here
Installation Self-check
1. Ensure that the three supporting points (on the rear side of the inverter) align with the three holes of the support
2. Ensure that the inverter is well fixed 3. Ensure that the inverter is locked on the support and an antitheft lock is installed
Preparation before wiring
36K/60K
1. DC isolation breaker 2. Vent valve 3. PV Strings connectors 4. Communications interface 5. RS485 6. AC output connectors 7. FAN
30K/50K
1. DC isolation breaker 2. Vent valve 3. PV Strings connectors 4. Communications interface 5. RS485 6. AC output connectors 7. FAN
Electrical Connections
Before performing any electrical connections, ensure that DANGER both DC and AC Switches are OFF. Otherwise, fatal injury can
occur due to the high voltage caused from AC and DC cables.
CAUTION Grounding the PV Strings needs below prerequisites.
An isolation transformer must be installed on the AC side of each inverter; Ensure that the neutral wire of the isolation transformer must be disconnected from the PGND cable.
One isolation transformer is with one PV inverter: do not install a single isolation transformer for multiple inverters; otherwise, circulating current generated b the inverters will lead to operation failure.
Select “Isolation SET” on the APP, and set in “Input Grounded”, “With TF”.
Cable specifications (recommended)
Cable type
Cross-sectional Recommended
Area of single strand (mm )
OT terminals
Notes
5-core outdoor special cable AC terminal 4-core outdoor special cable
30~50
OT35~50-8
The distances between AC terminal and gridconnection is no more than 200m.
Protection multi-core
Ground (PGND) Cables
outdoor special cable
30~50
OT35~50-6
Terminal connection
AC circuit breaker
Connect the inverter with the power grid through installing one AC circuit breaker whose rated current is no less than 100A. Residual current protection function of square matrix is internally installed in the inverter and you can set leakage current protection value no less than the corresponding value in below table, if local utility department require leakage current protection function for AC circuit breaker. That set can save the inverter from its performance failure.
Inverter Model 30K 36K 50K 60K
Residual current value 300mA 360mA 500mA 600mA
Connecting AC Output Cables
AC output cables connection is operated within the right case. Before connection AC cables, you need loosen these four screw locks using socket hexagon wrench, take out the wire connecting with Earth wire using cross screwdriver, and remove the cover of wiring chamber. please follow steps to connect AC cables for the sake of your personal and property safety.
AC Wiring Procedure
Step 1
Step 2 Step 3
Step 4 Step 5
Remove an appropriate length of the jacket and insulation layer from the AC output cable. Insert the exposed core wires into the crimp area of the OT terminal, wrap the wire crimp area with heat shrink tubing or insulation tape, and crimp them using hydraulic pliers. Loosen the locking cap from the AC OUTPUT waterproof cable connector at the bottom of the inverter and remove the plug from the locking cap.
Route the AC output power cable into the locking cap and the AC OUTPUT connector at the inverter bottom, and connect the AC cable to L1, L2, L3, N, and E on the AC terminal block, tighten them using screw driver and the required torque of 12 N.m.
Tighten the locking cap on the AC OUTPUT waterproof cable connector to a torque of 12N.m. Tighten the four screws on the cover to a torque of 3 N.m.
Heat shrink tubing
NOTICE
For your operation and safety sake, please prepare multi-stranded wire, crimping terminals and a proper crimping tool before AC Wiring.
Connecting the PV Strings
Step 1 Step 2
Step 3
Remove an appropriate length of the insulation layer from the positive and negative power cables using a wire stripper, as shown in below Figure. Insert the exposed areas of the positive and negative power cables into the metal terminals of the positive and negative connectors respectively, crimp them, and tighten the locking nuts on the positive and negative connectors using a removal wrench. Take out the protective plug from the DC terminals of the inverter, insert the positive and negative connectors into the corresponding connector terminals of the inverter until a “click” sound is heard.
WARNING
When taking out DC connectors, please ensure that PV Strings are disconnected; otherwise, a fire can occur.
Refer to No. of DC input terminals at the bottom of inverter shown in below figure: 30K/50K with 10 ruotes and 36K/60K with 12 routes, if quantity of PV strings is less than number of input on inverter, you refer to below Table for the installation of PV strings and the inverter.
36K/60K
30K/50K
Input Route Number of Input Route
Inverter model
1
Connected to any route
2
Connected to routes 2 & 6
3
Connected to routes 2 , 6 $ 10
4
Connected to routes 2, 6, 10 & 13
5
Connected to routes 2, 3, 6, 10 & 13
6
Connected to routes 2, 3, 6, 7, 10 & 13
30K/36K 50K/60K
7 Connected to routes 2, 3, 6, 7, 10, 11 & 13
8 Connected to routes 2, 3, 6, 7, 10, 11, 13 & 14
9
Connected to routes 2, 3, 4, 6, 7, 10, 11, 13 & 14
10 Connected to routes 2, 3, 4, 6, 7, 8, 10, 11, 13 & 14
11 Connected to routes 2, 3, 4, 6, 7, 8, 9, 10, 11, 13 & 14 36K/60K
12 Connected to routes 2, 3, 4, 6, 7, 8, 9, 10, 11, 12,13 & 14
Inverter Uninstall
Inverter uninstall requires below procedure: Step 1 Disconnect all electric connections including these of communications cables, DC
input cables, AC output cables and the PGND cables.
When uninstalling DC input connectors, insert removal wrench into the bayonet shown in Figure, press the wrench down, and take out the connector.
Step 2 Remove the inverter from its rear panel.
Step 3 Remove the rear panel.
WARNING
Before uninstalling DC input connector, please ensure that the DC SWITCH is set to OFF to avert equipment damage and/or personal injury.
System Operation
Switch ON the AC circuit breaker and set the DC SWITCH of the inverter to ON. Observe statuses of grid-connecting light on the inverter for a while, and if the lights display that the inverter has entered gridconnecting, it means the inverter is operating well. Any query during operating the PV inverter, call your dealer.
To power OFF the Inverter, switch off the circuit breaker at AC terminal, and set the DC SWITCH to OFF.
WARNING
After the inverter power is off, the remaining electricity and heat may still cause eletrical shock and body burns. Please only begin servicing the inverter ten minutes after the poweroff.
Interface
1. PV indicator 2. Grid indicator 3. COM indicator 4. Warning indicator
LED Indicator
LED Indicator status descriptions
PV Indicator
on
Voltage of PV strings meets the requirements for inverter grid-connecting to generate power.
Voltage of PV strings can`t meet the requirements for blink inverter grid-connecting to generate power.
blink
Power grid abnormal, and can`t meet the requirements for inverter grid-connecting to generate power.
When grid-on, the blink (every cycle last 30s) of Grid
Indicator means loading amounts: quantity of blink
means power size, and after that the Indicator keeps
Grid Indicator on
ON. When less than 20% rated power, blink one time;
20%~40%% rated power, blink twice every 30s;
40%~60% rated power, blink three times every 30s;
60%~80% rated power, blink four times every 30s;
80%~100%% rated power, blink five times every 30s.
blink Communications data transmission is underway.
COM Indicator off
No external communications is connected or no communications data transmission.
Warning Indicator
on/blink Refer LED status in warning table. off No warning.
LED status and Warning code
Warning PV Grid COM Warning code indicator indicator indicator indicator
Normal status Starting up WLAN/WIFI/RS485 communication PV normal Grid over voltage Grid under voltage Grid absent Grid over frequency Grid under frequency Grid unbalance PV over voltage PV under voltage Weak radiation Strings abnormal Inverter over temperature Fan abnormal Insulation resistance abnormal Leakage current abnormal Strings reverse Control power abnormal DC bias current abnormal Inverter relay abnormal Leakage current HCT abnormal System fault DC link voltage unbalance DC link over voltage Internal Communications Fault Software version incompatibility EEPROM fault Sampling inconsistency Invert circuit abnormal Boost circuit abnormal
Note:
light on
light off
light blink keep original status
Connecting RS485 Communications Cables
Installing RS485 communications cable procedure
Interface of RS485 communications cable is in the right case of the inverter, shown in above figure.
Step 1 Remove the wiring chamber on the right of inverter, and loosen the locking cap on 485 waterproof cable connector from the bottom of inverter.
Step 2 Remove an appropriate length of the insulation layer from the communications cable, loosen screw lock to take out panel, insert the cable to the waterproof cable connector, and tighten the locking cap.
Step 3 Connect RS485 differential positive and negative signal of data logger to terminal 1A and 1B of inverter, and connect terminal 2A and 2B of the inverter to terminal 1A and 1B of another inverter.
Terminal resistance setting
Terminal resistance setting in built in the inverter. In case when one RS485 cable connects with multiple inverters or total length of communications cable is too long that communications is abnormal, you need set ON the terminal resistance of RS485 communications from the inverter connected at the end of chain.
Modbus Address setting
When V1000 data collector logger is equipped with the inverter, Modus address can be automatically allocated. And when other brand data collector logger is used, you need download APP and set Modbus address according to below figure.
The default Modbus address is 1, and if needed, you can revise the address ( the recommended address is 1-247).
Modbus address can`t be identical when one RS485 is wired with multiple inverters.
Maintenance
Check periodically heat sink and the inlet/outlet of eaternal FAN, clean them, and ensure that they are free from dust and blockage. If any abnormal with the FAN , please replace it.
PV FUSE is in-built, if any warning display that the FUSE is melt, disconnect AC breaker, and switch off DC switcher to OFF; pull out all DC input strings, wait at least 10 minutes after the inverter is powered off. Then open both right and left frontal panels of the inverter, identify the melt FUSE using multi-meter, and replace them, install the panels tighten the screws of invert, and restart the inverter.
DANGER
When replacing the FUSE, be sure to unplug all the dc input group terminals of the inverter, otherwise there will be a danger of electric shock.
The Inverter Troubleshooting
If any abnormal phenomena occur, refer to below table for trouble shooting. If failed, call your dealer for help.
Issue
Solution
No display
1.Check DC switch of inverter is on or off 2.If there is PV combiner box, check fuse, terminal,wires
No generation Inverter abnormal
1.Check AC breaker is on or off 2.Wait stronger sunshine 3.Check the number of PV panel 4.To operate according to inverter`s manual
1.Disconnect both AC and DC breakers 2.Wait as less 10 minutes and switch on AC and DC breaker 3.Check whether inverter run normally or not
Power generation is less than expected
1.Ensure that inverter is free from direct sun exposure and good ventilation 2.Check that inverter isn`t dust clogging, fans run normally 3.Ensure enough installation distance between inverters
2020/8/18 614-00144-01
Documents / Resources
 | SOLAX POWER X3-30K-LV Mega Three Phase Grid Tied PV String Inverter [pdf] User Guide X3-30K-LV, X3-30K-LV Mega Three Phase Grid Tied PV String Inverter, Mega Three Phase Grid Tied PV String Inverter, Three Phase Grid Tied PV String Inverter, Grid Tied PV String Inverter, PV String Inverter, String Inverter, Inverter |