562.1 Intended UseThe unit converts the DC current generated by the photovoltaic (PV) modules to grid-compliant alternating current and performs single-phase feed-in into the electricity grid. Growatt 2500MTL-S,Growatt 3000MTL-,Growatt 3600MTL-,Growatt 4200MTL-,Growatt 5000MTL-,Growatt 5500MTL-, inverters are built according to all required safety rules. Nevertheless, improper use may cause lethal hazards for the operator or third parties, or may result in damage to the units and other property.SSSSSPrinciple of a PV plant with this GROWATT XXXXMTL- single-phase inverterSPositionDescriptionAPV modulesBCDEFDC load circuit breakerGrowatt InverterAC load circuit breakerEnergy meterUtility gridThe inverter may only be operated with a permanent connection to the public power grid. The inverter is not intended for mobile use. Any other or additional use is not considered the intended use. The manufacturer/supplier is not liable for damage caused by such unintended use. Damage caused by such unintended use is at the sole risk of the operator.2 SafetyPV modules Capacitive Discharge CurrentsPV modules with large capacities relative to earth, such as thin-film PV modules with cells on a metallic substrate, may only be used if their coupling capacity does not exceed 470nF. 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 personThis grid-tied inverter system operates only when properly connected to the AC -distribution network. Before connecting the Growatt MTL- 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.S2.3 Safety instructionThe GROWATT MTL- Inverters is designed and tested according to international safety requirements(IEC62109-1,VDE-AR-N4105,CE,VDE0126-1-1,CE10-21 AS4777,NBT32004-2013,EN50438);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.S2.4 Assembly WarningsPrior 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.WARNING
