SAJ Sununo-TL Series User manual

Installation Manual
SAJ Solar Inverter
Sununo-TL Series
Sununo-TL1.5K\Sununo-TL2K\Sununo-TL3KB\Sununo-TL4KB
Sununo-TL3KA\Sununo-TL4KA\ Sununo-TL5K
Please read this manual carefully before installation.

Index
1Introduction..................................................................................................................... 1
2Assembly Parts................................................................................................................ 2
3Installation....................................................................................................................... 4
3.1 Installation Mode.................................................................................................. 4
3.2 Safety Clearance................................................................................................... 5
3.3 Mounting Procedure. ............................................................................................ 5
3.4 Special Installation (only for France)................................................................... 8
4Electrical Connection...................................................................................................... 9
4.1 Overview of connection area................................................................................ 9
4.2 AC Side Connection........................................................................................... 10
4.3 DC side Connection............................................................................................ 13
5Pre-running Inspection.................................................................................................. 16
5.1 DC Side Inspection............................................................................................. 16
5.2 AC Side Inspection............................................................................................. 17
5.3 Communication Inspection................................................................................. 17
6Operation method.......................................................................................................... 17
6.1 Start SAJ Solar Inverter...................................................................................... 17
6.2 Key Operation .................................................................................................... 17
7Contact SAJ .................................................................................................................. 19

1
1Introduction
This manual introduces the installation and configuration of below models of SAJ Solar
Inverters.
Sununo-TL1 .5K\Sununo-TL2K\Sununo-TL3KB\Sununo-TL4KB
Sununo-TL3KA\Sununo-TL4KA\ Sununo-TL5K
Only qualified electricians who have read and fully understood all safety regulation
contained in this manual can install the inverter. Installers must be aware of native
regulations, laws and safety requirements.
This Installation Manual provides quick installation guidance, but it can’t replace the User
Manual. If more detail information is needed, please refer to the User Manual.
CE Mark
Equipments with the CE mark certify are in compliance to the
2004/108/EC and 2006/95/EC.

2
2Assembly Parts
After you receive the SAJ Solar Inverter, please check if there is any damage on the carton.
Please also check the inside completeness and for any visible external damage on the inverter
or any accessories. Contact your dealer if anything is damaged or missing.
A B
C D
E F
G I
G H I
Figure 2.1

3
Object Quantity Description
A 1 SAJ Solar Inverter
B 1 Rear Panel
C 1 Sets
2Sets
DC Connector (for Sununo-TL1.5K/2K）
DC Connector (for
Sununo-TL3KB/4KB/3KA/4KA/5K)
D 2 RS485Connector
E 6 M6×50 Expansion screw
F 6 Expansion tube
G 4
M4×12 Cylinder head screw and Lock
washer（Sununo-TL1.5K/2K/3KB/4KB）
M5×12 Cylinder head screw and Lock
washer（Sununo-TL3KA/4KA/5K）
H 1 User Manual
I 1 Warranty Card

4
3Installation
3.1 Installation Mode
Avoid prolonged rain.
Avoid direct sunlight.
Ensure sufficient airflow.
Noted: Ensure the label visible on the SAJ Solar Inverter after installation. Please see
more details installation information in the User Manual.
Avoid direct sunlight.

5
Figure 3.1
3.2 Safety Clearance
Please follow up the safety clearance below when install one or multiple SAJ Solar Inverter.
Please contact SAJ for more installation information.
Direction Minimum Clearance（cm）
Above 30
Below 50
Side 50
Front 5
Figure 3.2
3.3 Mounting Procedure.
1) Use the rear panel in the package as a drilling template and mark the positions of the drill
holes, as illustrated below.
Install on the wall correctly.

6
Sununo-TL1.5K/2K Sununo-TL3KB/4KB
Sununo-TL3KA/4KA Sununo-TL5K
Figure 3.3
2) Drill 6 holes in the wall (in conformity with position marked in above picture), and then
place expansion tubes in the holes using a rubber hammer.
Figure 3.4
3) Mount the rear panel.
Wring six screws into the expansion tubes and tightly mount the rear panel on the wall.

7
Figure 3.5
4) Carefully attach the inverter to the rear panel according to the position of the screws.
Make sure the backside of the inverter is closely against the rear panel. When two people
transport the inverter, make sure each one use the hand grip in right position as
illustrated in the picture.
Figure 3.6
5) Pay attention to the four notches cut in both flanks of heat sink (as illustrated in above
picture), which should be placed in corresponding hooks from the rear panel. Make sure
that the heat sink and the rear panel are buckled together and the inverter is tightly
attached to the rear panel. And tighten the screws with 5.9N·m torque.
Figure 3.7
6) Please carefully check the accessories and original carton to make sure during the
installation every necessary part is used and nothing is missing.

8
3.4 Special Installation (only for France)
Connect the ground wire to the earthing, terminal, and then tighten them as following
figure.
Figure 3.8

9
4Electrical Connection
4.1 Overview of connection area
Sununo-TL1.5K/2K
Sununo-TL3KB/4KB

10
Sununo-TL3KA/4KA/5K
Figure 4.1
Object Description
A DC switch to turn off the inverter manually(optional)
B DC input
C Plug for connecting the RS485 communication module
D Plug for connecting Ethernet communication module(optional)
E AC output
F Heat sink
4.2 AC Side Connection
NOTICE
The cross-section of the AC cable should be more than 12 AWG.
DANGER
Danger to life due to potential fire or electricity shock.
Never connect or disconnect the connectors under load.

11
Assembly Instructions:
1) Strip the cable with the length 0.276 inches (9/32″) - (7mm) and please be careful NOT
to nick conductors.
Figure 4.2
2) Screw off and separate each component of AC connector as follows.
Figure 4.3
3) Pass the cable through each component from right to the left as follows. Tighten the
screws with 3N·m torque.
Figure 4.4
4) Use a screw driver and loose the three screws at the side of the straight plug. Then insert
the stripped N, L and PE cable accordingly to the corresponding position and fully
tighten the screws.

12
Figure 4.5
Connect L, N and protective conductor to the AC terminal in accordance with the
label.
To do this, the insulated earthling conductor must be 5mm longer than the insulated L and N
conductors! L and N must not be swapped. The ground wire shall be larger than phase
conductor.
Figure 4.6
5) Aim the terminals on the straight plug to the holes of the grommet, and then compress
them together.
Figure 4.7

13
6) Finally, connect the straight plug to the AC terminal on inverter. Pay attention to the
polarity of the terminals to avoid wrong connecting.
4.3 DC side Connection
NOTE
The cable length on DC side should not exceed 30 m.
DANGER
DANGER to life due to potential fire or electricity shock.
Never connect or disconnect the connectors under load.
NOTICE
If only one string input is used for DC connection, please use the sealing
plug to seal the left DC input set to ensure the inverter IP 65 protection.
NOTICE
Before electrical connection setup, installer shall make sure the inverter is
isolated and disconnected from the PV source and AC grid.
The inverter may only be operated with PV generators (Class A PV modules
according to IEC 61730 and cabling) of protection class II. Do not connect any sources
of energy other than PV modules to the inverter.
NOTICE
No mixed connections between input zones
For instance, if the positive pole of a string is connected at input zone 1 and
the negative pole at input zone 2, this is called a mixed connection.
Only connect strings at one input zone and never mix the input zones 1 and 2!
The DC connectors come pre-assembled and the caps are loose. The whole connector
will include the male side and female side as showed below:

14
Male side connector (M) Female side connector (F)
Figure 4.8
Assembly Instructions:
1) Strip the cable with the length 0.276 inches (9/32")-(7mm) and please be careful NOT to
nick conductors.
Figure 4.9
2) Use specified strip tool in this step. Adjust the strip stopper and put the cable in
corresponding notch to strip the length of 7mm. See below figures.
Figure 4.10 Figure 4.11
3) Insert stripped cable into contact barrel and insure all conductor strands are captured in
the contact barrel and the conductors are visible in the contact barrel observation hole.
See below figures.

15
Pin contact
Socket contact
Figure 4.12
Figure 4.13
4) Crimp contact barrel by using the hex crimping die, ensure it is fixed.See below figures.
Crimped pin contact
Crimped socket contact
Figure 4.14
Cable requirements:
Cable Size Cable pull – out force requirement
2.5 mm2Min. 310 N (70 Lbs)
4mm2Min. 400 N (90 Lbs)
6 mm2Min. 450 N (100 Lbs)
10 mm2Min. 500 N (110 Lbs)
1) Crimp contact barrel by using the hex crimping die. Ensure it is fixed. See below figures.
Figure 4.15

16
Figure 4.16
2) Wrest the cap by using the torque of 2.6~2.9N·m.
Figure 4.17
3) After wrested the cap tightly, align the 2 half connectors and mate them together by hand
until a “click” is heard or felt.
Figure 4.18
5Pre-running Inspection
5.1 DC Side Inspection
DC input voltage should be within the voltage range as specified in the datasheet (please
refer to the Max. DC Voltage and Min. DC Voltage in the datasheet).DC voltage exceeding
the range may cause error or damage to the inverter and the lose caused is not covered by
SAJ warranty policy.
The polarity of DC input should be in accordance with inverter input, and not the reverse.
Though inverter is integrated with reverse polarity protection, it could be damaged in the
inside due to fault operation.
Inverter with DC Switch: please keep the inverter DC Switch OFF before startup. Turn ON
the DC switch when the inverter is ready to start up.

17
Check the insulation status between solar panels and ground. Make sure the DC side ground
insulation is larger than 1000kΩ; otherwise it is forbidden to connect to public grid.
Make sure DC input cable is tightly connected with DC input terminal.
5.2 AC Side Inspection
Ground cable should be in appropriate cross section size. An over-long or over-slender
ground cable can lead to inverter errors. SAJ should not bear responsibility to any defect or
safety accident caused by an absence of ground cable.
Check the consistency of grid parameters and inverter parameters. Detail data please refer to
product datasheet.
Make sure AC output cable is tightly connected with AC terminals.
5.3 Communication Inspection
Use multimeter or RJ45 specialized test tool to test the internal and external connection of
RS485 and RJ45 cables. Make sure the cables are tightly connected with terminals.
6Operation method
6.1 Start SAJ Solar Inverter
Turn on the DC Switch (as shown in below graphic). When inverter begins to run, LCD
screen will display inverter model type and then automatically display running status.
Figure 6.1
6.2 Key Operation
SAJ grid-tie solar inverter offers two buttons for user to view running information and
configure parameters. The two buttons can be reused.

18
Figure 6.2
Object Description
A LED light – POWER. Yellow light shines when the inverter is
energized.
B LED light-FAULT. Red light shines when fault occurs in the inverter
and automatically goes out when the fault is removed.
C LED light-RUN. Green light flashes when the inverter runs good.
D ▼/ESC
E ▲/ENT
F LCD screen for viewing the running data, recorded information, and
setting parameters.
Name Operation Description
▼/
ESC
Press less than one second It indicates the“▼”button, which can move the cursor
downwards in the menu, or decrease the setting.
Press more than one second It indicates the “ESC” button, which can return to
parent menu or cancel the demand.
▲/
ENT
Press less than one second
It indicates the “▲” button, which can move the
cursor upward in the menu, or increase the setting
value.
Press more than one second It indicates the “ENT” button, which can enter
submenu or confirm the command.
Note: If operation stops for one minute, LCD display backlight will turn off to save power.