metallic substrate, may only be used if their coupling capacity does not exceed 1uF. During
feed-in operation, a leakage current flows from the cells to earth, the size of which depends on the
manner in which the PV modules are installed (e.g. foil on metal roof) and on the weather (rain,
snow). This "normal" leakage current may not exceed 50mA due to the fact that the inverter would
otherwise automatically disconnect from the electricity grid as a protective measure.
2.2 Qualification of skilled person
This inverter system operates only when properly connected to the AC distribution network.
Before connecting the MIN TL-XH 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.
2.3 Safety instruction
The MIN TL-XH Inverters is designed and tested according to international safety requirements
（IEC62109-1,CE,VDE-AR-N4105,CEI0-21,VDE0126-1-1, AS4777）; 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 1900.
2.4 Assembly Warnings
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.
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