Description Of Protection Parameters - Sungrow SG500MX Operation Manual

Operation Manual
Set the protection parameter by tapping the pop-up keypad and tap ENTER to confirm setting.
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Improper parameter configuration may affect the normal operation of the inverter!
Only authorized personnel can configure these parameters.
Should any question or doubt occurs, please contact Sungrow.

7.3.2 Description of Protection Parameters

Descriptions of the protective parameters are shown in the following table.
Parameter
Ⅰ_Vgrid-max(V)
Ⅱ_Vgrid-max(V)
Ⅰ_T-Vhigh trip(ms)
Ⅱ_T-Vhigh trip (ms)
Recover_Vgrid-max(V)
Ⅰ_Vgrid-min(V)
Ⅱ_Vgrid-min(V)
Ⅰ_T-Vlow trip(ms)
Ⅱ_T-Vlow trip (ms)
Recover_Vgrid-min(V)
Ⅰ_Fgrid-max((Hz)
Ⅱ_Fgrid-max((Hz)
Ⅰ_T-Fhigh trip(ms)
Ⅱ_T-Fhigh trip (ms)
Recover_Fgrid-max(Hz)
Ⅰ_Fgrid-min((Hz)
Ⅱ_Fgrid-min((Hz)
Ⅰ_T-Flow trip(ms)
Ⅱ_T-Flow trip (ms)
Recover_Fgrid-min((Hz)
LVRT switch
LVRT normal vol min(V)
Description
Set the grid over-voltage protection I value. Protection is
activated when voltage exceeds this value.
Set the grid over-voltage protection II value. Protection is
activated when voltage exceeds this value.
Set the protection time of grid over-voltage protection I
Set the protection time of grid over-voltage protection II
Inverter recovers normal operation when grid voltage is below
this value
Set the grid under-voltage protection I value. Protection is
activated when voltage is below this value.
Set the grid under-voltage protection II value. Protection is
activated when voltage is below this value.
Set the grid under-voltage I tripping protection time
Set the grid under-voltage II tripping protection time
Inverter recovers normal operation when grid voltage exceeds
this value
Set the grid over-frequency protection I value. Protection is
activated when frequency exceeds this value
Set the grid over-frequency protection II value. Protection is
activated when frequency exceeds this value
Set the grid over-frequency I tripping time
Set the grid over-frequency II tripping time
Inverter recovers normal operation when grid frequency is below
this value
Set the grid under-frequency protection I value. Protection is
activated when frequency exceeds this value
Set the grid under-frequency protection II value. Protection is
activated when frequency exceeds this value
Set the grid under-frequency I tripping time
Set the grid under-frequency II tripping time
Inverter recovers normal operation when grid frequency exceeds
this value
Enable or disable the LVRT switch
Refer to Fig. 8-1Lower voltage withstand requirements, U1
7 Parameters of LCD
31