Main Functions; Operation Mode; Mode Change; Operation Mode Description - Sungrow SG4950HV-MV System Manual

10 Main Functions

10.1 Operation Mode

10.1.1 Mode Change

After being energized, the MV Station switch among different modes as shown in the
figure below.
U is the DC input voltage of the module.
pv
U Start is the module DC side startup voltage.
pv

10.1.2 Operation Mode Description

S S t t o o p p
This is the initial state of the module. The module DC and AC switches are in the
"OFF" position; the upstream and downstream connections are disconnected. The
module is therefore electricity-free.
I I n n i i t t i i a a l l S S t t a a n n d d b b y y
When the module upstream and downstream connections are connected and the DC
switches are in the "ON" position, the module turns to the I I n n i i t t i i a a l l S S t t a a n n d d b b y y mode.
Module will continuously check if the PV array and the grid meet the grid-connection
requirements. If the module DC input voltage is higher than the module startup voltage
and the startup time is reached, whilst the requirements of the grid side parameter are
satisfied, module will turn from the I I n n i i t t i i a a l l S S t t a a n n d d b b y y mode into the S S t t a a r r t t u u p p mode.
f f i i g g u u r r e e 1 1 0 0 - - 1 1 Operation modes change
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