V-TAC 11381 User manual

INSTRUCTION MANUAL
SOLAR INVERTER
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the best. Please read these instructions carefully & keep this user manual
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INTRODUCTION
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WARNING
1. Please make sure to turn off the power before starting the installation.
2. Installation must be performed by a qualified electrician.
3. Proper grounding should be ensured throughout the installation.
1. The installation position height shall
ensure that the line of sight is on the same
horizontal plane as the LED display lamp,
this is easy for people to inspect the inverter
status.
2. There is enough reserved space
around the installation site to facilitate
the disassembly and assembly of the
inverter and air convection.
3. When installing multiple inverters, it is necessary to reserve a certain space between the
inverters, the left and right space is as follows, and at the same time, the upper and lower
parts of the inverter need to leave a sufficient distance in order to ensure that it dissipates
heat well.
Caution, risk of
electric shock.
This marking indicates that this
product should not be disposed
of with other household wastes.
20
PAP
INSTALLATION DISTANCE AND LOCATION

4. The mounting surface should be
perpendicular to the horizontal line
as shown in the figure below.
Please install the inverter vertically
or tilted back ≤15° to facilitate the
heat dissipation of the machine.
Do not tilt the inverter forward,
horizontally, upside down, lean
back too much, or install it
sideways.
1. Place the hanging plate at the wall installation point, adjust the angle with a horizontal
ruler, and mark with a marker pen
2. Punch holes with a impact drill and install expansion bolts. The user needs to prepare
the expansion bolt by himself, and it is recommended to use M8 x 60 stainless steel
explosion expansion bolt.
3. Fixed hanging plate. Clean the hole, impact the expansion bolt into the hole with a
rubber hammer, use a wrench to tighten the nut to fix the tail of the bolt, then remove the
nut, spring pad and flat pad, and then lock the wall hanging plate fixation to the wall
surface, with the tightening torque of 13Nm.
INVERTER INSTALLATION

Grid terminal connection
1. Connect the four wires L1, L2, L3, and N
of the three-phase public power grid to the
AC terminal, connect the ground wire to
the grounding point outside the chassis,
and ensure that the conductors of the
wires are not exposed and crimped firmly.
2. Tighten L1, L2, L3, and N of the crimped
terminals with a torque of
7-9N-m, and the grounding torque of PE on
the outside of the chassis is
7-9N-m; then tighten the AC waterproof cap.
WIRING CONNECTION
4. Take out the inverter from the packaging
box. If the installation position is high,
transport the inverter to the destination
while ensuring safety.
Connect the protection ground wire
1. Crimp OT terminal to ground. Remove the
screw in the ground position on the side of the
chassis, fasten the ground wire by the screw,
and the tighten torque is 7-9m.
5. After lifting the inverter, fasten the
back bracket plate of the inverter into
the wall hanging plate, and ensure that
the inverter bracket plate is well
matched with the hanging plate groove.
6. After the inverter is stably hung on the
wall mount, fix the bottom screws.

PV Wiring
1. Connect the outgoing cable of the PV panel to the MC4 terminal delivered with the inverter
2. Check the polarity of the PV strings, and then connect it to the inverter.
Check before operation
(1) Turn on the AC side circuit breaker of the grid;
(2) Turn on the DC switch of the inverter;
(3) Turn on the switch on the DC input side of the PV string;
(4) Observe the status of the inverter's LED lights or the information displayed on the LCD
screen
(5) Wait for the inverter to connect to the grid successfully.
Regular maintenance
When power failure maintenance, overhaul, troubleshooting of the inverter is required, please
stop the inverter strictly as follows:
(1) Switch off the breakers at the AC side;
(2) Switch off the integrated DC switch;
(3) Contact with customer service staff or local dealers.
Communication connection
1. 485 pin definition
2. Communication options
1 (RED) 5VDC
2 (ORANGE) A (RS 485 +)
3 (BROWN) B (RS 485 -)
4 (BLACK) GND
COMMUNICATION
OPTION
INVERTER INTERFACE
UPPER COMPUTER
INTERFACE
ETHERNET CONVERTER RS 485-1 RJ45 PLUG
WIFI CONVERTER RS 485-1 WIRELESS WIFI SIGNAL
GPRS CONVERTER RS 485-1 WIRELESS GPRS SIGNAL
ENET CONVERTER RS 485-1 NETWORK PORT