5
6
2.5 Electrical Connection Warnings
Ø
Prior to installation, inspect the unit to ensure absence of any
transport or handling damage, which could affect insulation
integrity or safety clearances; failure to do so could result in
safety hazards.
Ø
Assemble the inverter per the instructions in this manual. Use
care when choosing installation location and adhere to specified
cooling requirements.
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 potential of a shock hazard due to
hazardous voltages, cover the entire solar array with dark
material prior to connecting the array to any equipment.
Ø
Grounding the PV modules
：
The Growatt
MTLP-S is a
transformerless inverter. That is why it has no galvanic
separation. Do not ground the DC circuits of the PV modules
connected to the Growatt
MTLP-S. Only ground the mounting
frame of the PV modules.If you connect grounded PV modules
to the Growatt
MTLP-S, the error message "PV ISO Low".
Ø
Comply with the local requirements for grounding the PV
modules and the PV generator. GROWATT recommends
c o n n e c t i n g t h e g e n e r a t o r f r a m e a n d o t h e r e l e c t r i c a l l y
conductive surfaces in a manner which ensures continuous
conduction with ground in order to have optimal protection of the
system and personnel.
WARNING
CAUTION
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
Do not touch damaged inverters.
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. Children are forbidden to play with the
Growatt inverter. Must keep the Growatt inverter away from
children.
Ÿ
There is residual voltage in the inverter. The inverter takes 20
minutes to ischarge.
Ø
The components in the inverter are live. Touching live
components can result in serious injury or death.
DANGER
2
.
4
Assembly Warnings
CAUTION
Ø
Make all electrical connections (e.g. conductor termination,
fuses, PE connection, etc.) in accordance with prevailing
regulations. When working with the inverter powered on,
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
Ø
The Growatt Inverter converts DC Current from PV generator
into AC current. The inverter is suitable for mounting indoors
and outdoors.
Ø
You can use the AC current gernerated as follows:
House grid:
Public grid:
Energy flows into the house grid. The consumers
connected, for example, household devices or
lighting, consume the energy. The energy left over
is fed into the public grid. When the Growatt is not
gernerating any energy, e.g., at night, the
consumers which are connected are supplied by
the public grid.The Growatt does not have its own
energy meter. When energy is fed into the public
grid, the energy meter spins backwards.
Energy is fed directly into the public grid. The
Growatt is connected to a separate energy meter.
The energy produced is compensated at a rate
depending on the electric power company.
2.6 Operation Warnings
WARNING
Ø
Ensure all connectors are sealed and secure during operation.
Ø
Although designed to meet all safety requirements, some parts
and surfaces of Inverter are still hot during operation. To
reduce the risk of injury, do not touch the heat sink at the back
of the PV-Inverter or nearby surfaces while Inverter is
operating.
Ø
Incorrect sizing of the PV plant may result in voltages being
present which could destroy the inverter. The inverter display
will read the error message “PV voltage High!”
Ÿ
Turn the rotary switch of the DC Disconnect to the Off position
immediately.
Ÿ
Contact installer.
