48
7.7.2 Protection Parameter
•
User with this account can only view protection parameters, and default
values of these protection parameters have been set according to
corresponding grid standards.
•
To modify protection parameters, contact SUNGROW to obtain the
advanced account and corresponding password.
table 7-8
Protection parameter description
P
Pa
arra
am
me
ette
err
D
De
effiin
niittiio
on
n//S
Se
ettttiin
ng
g d
de
essc
crriip
pttiio
on
n
Country(region)
Depends on the location of the plant
Grid type*
Depends on the grid standards
Protection level
The level of protection of over/under-voltage and
over/under-frequency
Single-level protection value
See
table 7-9 Single-level Protection Parameters
Multi-level protection values
See
table 7-10 Multi- level Protection Parameters
Protection recovery value
See
table 7-11 Description of protection recovery
*If the country code is "China", the grid type can be set to power plant/non-power plant.
Set the grid type to correct value according to definitions of power plant
scenario and non-power plant scenario. Otherwise, the inverter will run
abnormally or even be damaged, and SUNGROW shall not be held liable for any
damage caused.
•
Power plant scenario: The inverter is applied to a power plant whose
capacity is greater than 1 MW, or to a power plant that feeds power into the
grid at the voltage greater than 35KV and connects to the public power grid
at the voltage of 10KV.
•
Non-power plant scenario: application scenarios other than the power plant
scenario.
The definitions come from the national code "NB/T 32004", "GB-T19964".
table 7-9
Single-level Protection Parameters Explanation
P
Pa
arra
am
me
ette
err
D
De
effa
au
ulltt
R
Ra
an
ng
ge
e
AC under-voltage single stage protection value
110.0V
23V ~ 230V
AC over-voltage single stage protection value
276.0V
220V ~ 322V
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