Sungrow SG30KTL-M, Quick User Manual

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2 Product Introduction
2.1 Intended Usage
SG30KTL-M, 3-phase without transformer string inverter, is a crucial unit between
the PV strings and utility grid in the PV power system.
The inverter CANNOT be connected to the PV modules, the positive or
negative terminal of which needs to be grounded.
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 SG30KTL-M
C Metering device meter cupboard with power distribution system
D Utility grid TT, TN-C, TN-S, TN-C-S
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.