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2 Product Introduction
2.1 Intended Usage
SG30KU and SG36KU (They will be referred to as inverter hereinafter unless
otherwise specified) which are a 3-phase string inverter without transformer, are
crucial unit between the PV strings and utility grid in the PV power system.
Inverter is dedicated to converting direct current power generated by the PV
modules into alternating current, which conforms to parameters of local utility grid,
and feeds it into the utility grid. The intended usage of the inverter is illustrated in
Fig. 2-1.
Fig. 2-1 Application of the inverter of the PV Power System
Item Description Note
A PV strings
Monocrystalline silicon; polycrystalline silicon and
thin-film without grounding of protection class II
B Inverter SG30KU, SG36KU
C Metering device Mter cupboard with power distribution system
D Utility grid 4W-Y Grid or 3W-Δ Grid
Any other or additional usage is not permitted except the intended usage.
Inverter may only accept PV modules with Protection Class II as its input.
Inverter may only be connected to utility grid via distribution board. Local
loads (home appliance, lights, motor loads, etc.) cannot be connected
between inverter and AC circuit breaker on the distribution board.
Additionally, the unit is intended for fixed installation. Located on a part
that is not removable without impairing the operation of the unit.
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