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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.
2.3 Safety instruction
The MIC TL-X Inverters is designed and tested according to international safety requirements
（IEC62109-1,CE,VDE0126-1-1, AS4777,etc）; however, certain safety precautions must be
observed when installing and operating this inverter. Read and follow all instructions, cautions and
warnings in this installation manual. If questions arise, please contact Growatt’s technical services
at +86 (0)755 2747 1942.
2.4 Assembly Warnings
WARNING
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.
Assemble the inverter per the instructions in this manual. Use care
when choosing installation location and adhere to specified cooling
requirements.
Unauthorized removal of necessary protections, improper use,
incorrect installation and operation may lead to serious safety and
shock hazards and/or equipment damage.
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.
CAUTION
Grounding the PV modules：The MIC TL-X 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 MIC TL-X. Only
ground the mounting frame of the PV modules.If you connect
grounded PV modules to the MIC TL-X, the error message "PV ISO
Low".
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.
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