Renac NAC70K Operating and maintenance instructions

++
Ø32 Ø38mm~Strip length 12mm
PE
N( ）three-wise without
L1
L2
L3 Ø5Ø8mm~
+
-
Solar Inverter
1.UnpackAnd Check
Notice
2.Inverter Fixation
In any case, this guidance is not intended to replace the user manual or
safety instructions of the product.
Make sure that you have read completely and understand fully, and
carefully follow the user's manual and relevant specifications before any
operation.
Otherwise, it will result in casualties and equipment damage.
1) Unpack and take out inverter and accessories.
2) Please check if model of received inverter is correct and items listed in
packing list are all included.
3) Please contact your local distributor if the inverter is found damaged or
accessories found not comply with packing list, don't try to install it.
1) Please refer to inverter user manual to select proper position to install
the inverter. Keep enough space for heat-dissipation when there are a few
inverters to be installed, at least 1.0m for inverter.
2) Pay attention to human and inverter safety when moving the inverters.
3) Inverter must be placed vertically, not allowed to flat, tilt or inverted.
4) Follow the steps below to fix the inverter.
2.1Fix the rack on the metal holder. (standard: M10*35mm, nut and flat pad)
Drill hole can be reserved or drilled on site on the metal holder according to
the hole size of rack,drill hole size should be Ø12mm, as precise as possible.
Drill hole can be reserved or drilled on site on the metal holder according to
the hole size of rack,drill hole size should be Ø12mm, as precise as possible.
2.2 The installation rack is fixed on the wall. (optional:M10*60mm,expansion
bolt).
Fix the installation rack contained in the package on the wall horizontally,
drill hole according to rack, drilling tool adoptsØ14mm impact, depth should
be more than 70mm, position should be as accurate as possible.
Clear dust inside and outside the hole, insert an expansion pipe vertically
into the hole, use hammer to knock until it is in the hole entirely, then unscrew
the bolt, then fix and tighten the rack on the wall with the bolt.
2.3 Hang the inverter gently up and hung on the rack, check and ensure that
both sides are fixed in the correct position, then tighten the screws at both
ends (attached in accessoriesbag).
2.4 Hang the inverter on the screws, check right and left sides, make sure the
it is hung in the right position, then screw the screws tight.
3.Electric Connection
Danger
High voltage is present inside inverter it may do harm to human safety.
Before doing connection, make sure there are not power present in DC
and AC cables.
Warning
+ and - of PV are not allow to be grounded, otherwise the inverter may
be damaged Recommended open circuit voltage of PV array.
Before finishing connections, DON'T switch on DC andAC breaker.
Recommend the PV array open-circuit voltage(25°C). 700...850V
3.1 Ac Cable
10-16mm²
Terminal
AC terminal
DC terminal
Ground protection terminal
4-6mm²
35-50mm²
Sectional area range of conductor Recommendation(copper)
4mm²
50mm²
10mm²
AC Cable DCCable
3.2AC Cable Connection
First remove the lower cover of the inverter with an L-type spanner(in
the accessory bag).
make the inverter output cable go through water proof sleeves of AC
output cover, 5 (or 4) cores cable are crimped on the terminal (in the
accessory bag) and heat shrinkable casing respectively for protection.
connect the 5 cores to inverter output terminals L1,L2,L3,N, and PE
separately(three-wise system do not have “N” wise), Use straight
screwdriver to tighten it. The AC output is three phase, mode of
connection should be L1/L2/L3+N+PE or L1/L2/L3+PE. Finally, lock the
lower cover.
The example below is four-wise system.
Note: while connecting, the switch of AC side must be open, otherwise
it will do harm to the human body; it should use professional crimping
tool while crimping terminal, make sure the crimping is well, and
ensure safety.
Strip length 7mm
400mm
220mm
1
2
L1 L2 L3
PE
N
NAC70K, NAC80K
Quick Installation Manual

Note: Each MPPT has power limitation, it's recommended to
sharing the DC input of the 4 x MPPT.
Note: After connecting the 485 communication line, fix the cable on
the tie bridge to avoid loosening and falling off the communication
line.
3.3.2 Connect the PV wire to the positive PV and negative PV terminals
accordingly.
4.Running Setting
Check all connections again before
starting the inverter. To start the
inverter, please switch on AC breaker
first, then switch on the DC switch (If
there) on inverter. If all connections
are correct and PV configurations are
correct, LCD will be on, "WAIT" LED
will be on, inverter will be standby for
Grid-tied connecting.
4.1 Working Mode Setting
Default working mode of inverter is independent. If the PV
connections are not independent, mode settings required. On LCD,
please press "ESC" to enter main menu interface, select "Setting",
then press "ENTER" to confirm to enter password interface. Enter
"00000 " and press "ENTER" to confirm. Select " INPUT MODE ",
press"ENTER" to confirm, move the cursor to choose the correct
mode and press "ENTER " to confirm. After the setting, restart the
inverter, the setting will be valid. (Note: before the setting, please
switch off AC breaker, DC connected, inverter will give alarm, the
setting should be carried out during this. "ESC" for quit, "UP",
"DOWN" for moving cursor, "ENTER" for confirming).
4.2 Safety Standard Setting
Default working mode of inverter is independent. If the PV
connections are not independent, mode settings required. On LCD,
please press "ESC" to enter main menu interface, select "Setting",
then press "ENTER" to confirm to enter password interface. Enter
"00000 " and press "ENTER" to confirm. Select " INPUT MODE ",
press"ENTER" to confirm, move the cursor to choose the correct
mode and press "ENTER " to confirm. After the setting, restart the
inverter, the setting will be valid. (Note: before the setting, please
switch off AC breaker, DC connected, inverter will give alarm, the
setting should be carried out during this. "ESC" for quit, "UP",
"DOWN" for moving cursor, "ENTER" for confirming).
4.3 Grid-tied Dc Voltage Setting
Grid-tied DC voltage can be set on the inverter when in error
conditions (inverter factory default is 350Vdc), normally there is no
to need. If needed, setting can be finished in the panel through the
button, the steps are as follows:
Press "ESC" key to enter the main menu interface, select the first
option "settings", press "ENTER " to confirm, enter password
"00000" and confirm, enter the setup menu, select the fourth option
"operation parameters ", press " ENTER " to confirm, enter the menu
and select f i r st opti o n " power v o l t age” ac c o r d i n g to t h e
requirements, setting will be valid after restarting.
4.4 Rs485 Address Setting
Rs485 address can be set when the inverter is grid- connected or
giving alarm (default address is 1). It's no need to set it if there is
single inverter in communication. To set it, please press "ESC" to
enter the main menu, select "setting" and press "ENTER" to confirm,
enter password"00000" and press "ENTER", select"485 address",
press” ENTER" to confirm and enter desired address (max is 32),
press “ENTER" to confirm. Setting will be valid after restarting.
3.3 PV Input Connection
3.3.1 Installation instructions of PV terminal connection & disconnection
(Terminal has polarity, pay attention to the "+" "-" logo on the body).
d.Lock nut operation.
█ Attention: you can do the connection and disconnection operation when connectors
are unloaded.
█ Input pv cable standard: inner diameter 12AWG (4mm²), external diameter
Ø6mm(Recommend)
a. Using a cable clamp to stripp off the wire skin 7±0.5mm, be careful not to damage the
copper core.
b. Using a special wire crimper tool which have amphenol certification, put the stripping
cable into the wire crimper jaw, correspond to the correct locator hole position,please
make sure no any damage to the locating wings.
c. Insert the pressed wire terminal into the backside of the connector, you will hear a
sound of “drop” when the plug in right position, the terminal will not be pulled out
again.( be careful not to make any mistake for the connection between terminal and
connectors)
locating wings
Female Connector
Male Connector
1 2 3 4
+ + - -
Pin NO.
1
2
3
4
RS485
(A)R/T+
(A)R/T+
(B)R/T-
(B)R/T-
Inverter1 485
Pin NO.
1
2
3
4
RS485
(A)R/T+
(A)R/T+
(B)R/T-
(B)R/T-
Pin NO.
1
2
3
4
RS485
(A)R/T+
(A)R/T+
(B)R/T-
(B)R/T-
...
485 PortRS232/RS485 Converter
Pin NO.
1
2
3
4
RS485
(A)R/T+
(A)R/T+
(B)R/T-
(B)R/T-
Pin NO.
1
2
3
4
RS485
R/ T +
R/ T -
VC C
GN D
3.4 Communication Connection
3.4.1Local communication connection of RS485：
3.4.2 Share 485 BUS for direct connection in multi inverters
Inverter2 485 InverterN 485
3.4.3 Inverter WLAN/GPRS port.
Note: When the network communication is for more than two (including)
inverters, for last inverter, the 2P dial switch next to RS485 terminal can
be switched to "ON", equivalent to add a 120Ω communication terminal
resistance between the R/T+ and R/T-.
The inverter is equipped with standard RS232, RS485,WLAN/GPRS and dry
contact (optional) communication ports, and the RS232 communication port
is mainly used for the software upgrade, RS485 communication port is for
inverter cable monitoring, WLAN/GPRS communication port is for inverter
wireless monitoring.
1- VCC
2- GND
3- 485A
4- 485B
RS485
DC Input Communication Port AC Output