Operation Manual 7 Parameters of LCD
31
Set the protection parameter by tapping the pop-up keypad and tap ENTER to confirm setting.
Tap “Prev” or “Next” to turn pages up or down.
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 Description
Ⅰ_Vgrid-max(V)
Set the grid over-voltage protection I value. Protection is
activated when voltage exceeds this value.
Ⅱ_Vgrid-max(V)
Set the grid over-voltage protection II value. Protection is
activated when voltage exceeds this value.
Ⅰ_T-Vhigh trip(ms)
Set the protection time of grid over-voltage protection I
Ⅱ_T-Vhigh trip (ms)
Set the protection time of grid over-voltage protection II
Recover_Vgrid-max(V) Inverter recovers normal operation when grid voltage is below
this value
Ⅰ_Vgrid-min(V)
Set the grid under-voltage protection I value. Protection is
activated when voltage is below this value.
Ⅱ_Vgrid-min(V)
Set the grid under-voltage protection II value. Protection is
activated when voltage is below this value.
Ⅰ_T-Vlow trip(ms)
Set the grid under-voltage I tripping protection time
Ⅱ_T-Vlow trip (ms)
Set the grid under-voltage II tripping protection time
Recover_Vgrid-min(V) Inverter recovers normal operation when grid voltage exceeds
this value
Ⅰ_Fgrid-max((Hz)
Set the grid over-frequency protection I value. Protection is
activated when frequency exceeds this value
Ⅱ_Fgrid-max((Hz)
Set the grid over-frequency protection II value. Protection is
activated when frequency exceeds this value
Ⅰ_T-Fhigh trip(ms)
Set the grid over-frequency I tripping time
Ⅱ_T-Fhigh trip (ms)
Set the grid over-frequency II tripping time
Recover_Fgrid-max(Hz) Inverter recovers normal operation when grid frequency is below
this value
Ⅰ_Fgrid-min((Hz)
Set the grid under-frequency protection I value. Protection is
activated when frequency exceeds this value
Ⅱ_Fgrid-min((Hz)
Set the grid under-frequency protection II value. Protection is
activated when frequency exceeds this value
Ⅰ_T-Flow trip(ms)
Set the grid under-frequency I tripping time
Ⅱ_T-Flow trip (ms)
Set the grid under-frequency II tripping time
Recover_Fgrid-min((Hz) Inverter recovers normal operation when grid frequency exceeds
this value
LVRT switch Enable or disable the LVRT switch
LVRT normal vol min(V) Refer to Fig. 8-1Lower voltage withstand requirements, U1
To Next Page
