Sungrow SG2K5TL, Руководство пользователя

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Product Introduction
2
11
Before restarting the inverter, rotate the DC switch to the “ON” position.
2.3
Technical Description
2.3.1
Principle Description
The principle design of transformer-less and grid-connected inverter can be known
from the block diagram Fig 2-5. Three PV strings input voltage is transmitted to DC
BUS via Boost circuit. And then a full bridge circuit converts it into sinusoidal current.
The AC connection to the local utility grid is via 3 wires for a single phase feed point.
There is a MPP tracker to ensure that maximum power from PV string can be utilized.
Inside the inverter protective circuit to can trigger AC relay if required for guaranteeing
inverter safely operation and person.
Standard interface RS485 are provided for communication with other devices. You
can look up inverter running status and configure parameters by navigating LCD
display panel menu.
L
N
PE
Boost Full Bridge Relay 1
MPPT
Relay 2
Communication Interface RS485
LCD Display Panel
Functional Safety
and Protective Circuit
DC Switch
Fig 2-5 Main Circuit Diagram of Inverter
2.3.2
Functions Description
Inverter functions can be grouped as the following:
z
Conversion function
Inverter converts the direct current power into alternating current power, which
conforms to the grid requirement of its installation country.