2.3 Safety instructions
1.Please
read
this
manual
carefully
before
installation.If
you
fail
to
install
according
to
the
instructions
in
this
manual,or
ignore
the
warnings
in
the
manual
and
the
equipment
is
damaged,our
company
reserves
the
right
not
to
guarantee
the
quality;
2.All operations and wiring should be finished by the professional electrical or mechanic-
al engineers;
3.During
installation,except
for
the
wiring
terminals,please
do
not
move
other
parts
inside
the
chassis;
4.All
electrical
installations
must
comply
with
local
electrical
safety
standards;
5.If
the
machine
needs
maintenance,please
contact
the
local
designated
system
installation
and
maintenance
personnel;
6.The
use
of
this
machine
for
grid
-
connected
power
generation
requires
permission
from
the
local
power
supply
department;
7.When
installing
photovoltaic
modules
during
the
day,use
opaque
materials
to
cover
the
photovoltaic
modules,otherwise
the
voltage
at
the
module
terminals
will
be
high
in
the
sun,which
may
cause
personal
danger
.
2.2 Qualification of skilled person
This grid-tied inverter system operates only when properly connected to the AC
distribution network. Before connecting the MID TL3-X to the power distribution grid,
contact the local power distribution grid company. This connection must be made only
by qualified technical personnel to connect, and only after receiving appropriate
approvals, as required by the local authority having jurisdiction.
Ø
Before installation, pleae check the unit to ensure that there is no
transportation or handling damage, which may affect the
insulation integrity or safety clearances; otherwise, it may cause
safety hazards.
Ø
Follow the instructions in this manual to assemble the inverter.
Note that select the suitable mounting location and comply with
the specified requirements of cooling.
Ø
Unauthorized removal of necessary protections, improper use,
incorrect installation and operation may lead to serious safety and
shock hazards and/or equipment damage.
Ø
In order to minimize the possibility of shock hazards due to
dangerous voltages, cover the entire solar array with dark colored
materials before connecting the array to any equipment.
Ø
Grounding the PV modules
：
the MID TL3-X is a transformerless
inverter. which means there is no galvanic separation. Do not
grounding the DC side of the MID TL3-X inverter. Only grounding
the mounting frame of the photovoltaic module. Otherwise there
will be an error message "PV ISO Low".
Ø
Comply with the local requirements for grounding the PV
modules and the PV generator. GROWATT recommends
connecting the generator frame and other electrically conductive
surfaces in a manner which ensures continuous conduction with
ground in order to have optimal protection of the system and
personnel.
WARNING
CAUTION
2.3.1
Assembly Warnings
2.3.2 Electrical Connection Warnings
Ÿ
Do not open the inverter except the wire box by qualified persons.
Ÿ
Electrical installation, repairs and conversions may only be carried
out by electrically qualified persons.
Ÿ
Forbid live line work
.
Ø
Danger to life due to high voltages in the inverter
Ø
Persons with limited physical or mental abilities may only work
with the Growatt inverter following proper instruction and under
constant supervision. Must keep the Growatt inverter away from
children.
Ÿ
There is residual voltage in the inverter after the device shutdown.
The inverter need to take 20 minutes to discharge for safety.
Ø
The components in the inverter are live. Touching live components
can result in serious injury or death.
DANGER
Ø
Make all electrical connections (e.g. conductor termination,
fuses, PE connection, etc.) in accordance with prevailing
regulations. When using the inverter to provide the power,
adhere to all prevailing safety regulations to minimize risk of
accidents.
Ø
Systems with inverters typically require additional control (e.g.,
switches, disconnects) or protective devices (e.g., fusing circuit
breakers) depending upon the prevailing safety rules.
WARNING
5
6
