User Manual 5 / 43 CPS Mini Central series
2.
Safety
2.1
Intended Use
CPS Mini Central series inverters are to be used solely to feed solar energy converted
photovoltaically into the public grid. CPS Mini Central series inverters are multi-string
inverters with multi-MPP trackers, which mean they are able to connect to different PV
module arrays. The equipment may only be operated in compliance with its intended use.
Grid-tied PV system Overview:
Fig2.1
The 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 as intended use. The manufacturer is not responsible for any damages resulting
from unintended use. Damage caused by such unintended use is at the sole risk of the
operator.
As drawings shown above, a complete Grid-tied PV system consists of PV modules, PV
inverters, public grid and other components. Moreover, PV inverters always act as key
components.
PV modules Capacitive Discharge Currents:
PV 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
5000nF. 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 300mA due
to the fact that the inverter would otherwise automatically disconnect from the electricity
grid as a protective measure.
If PV modules of the PV system require POSITIVE or NEGATIVE
grounding, , please contact CyberPower Systems, Inc. for technical
support before installation.
