Fronius GEN24 Operating Instructions Manual page 21

"Middle Limits"
Parameter
"Voltage Middle Limits"
"Undervoltage U<"
"Undervoltage Time U<"
"Overvoltage U>"
"Overvoltage Time U>"
"Outer Limits"
Parameter
"Voltage Outer Limits"
"Undervoltage U<<"
"Undervoltage Time
U<<"
"Overvoltage U>>"
"Overvoltage Time U>>"
"Long Time Average Limit"
This function calculates a moving average voltage value over the set time and
compares it with the set overvoltage protection value. If the overvoltage protec-
tion value is exceeded, a disconnect occurs.
Parameter
"Long Time Average
Limit"
"Overvoltage Averaging
Time U>"
"Overvoltage U>"
"Fast Overvoltage Disconnect"
Fast overvoltage disconnect for voltage spikes that can respond within one peri-
od.
Parameter
"Fast Overvoltage Dis-
connect"
"Fast Overvoltage Dis-
connect Time"
"Startup and Reconnection"
Before the inverter is allowed to connect, the connection conditions for voltage
Description
Activate / deactivate the middle voltage limit values
"On" / "Off"
Setting value for undervoltage protection U< in [V]
Setting value of time for undervoltage protection
U< in [s]
Setting value for surge protection U> in [V]
Setting value of time for surge protection U> in [s]
Description
Activate / deactivate the outer voltage limit values
"On" / "Off"
Setting value for undervoltage protection U<< in [V]
Setting value of time for undervoltage protection
U<< in [s]
Setting value for surge protection U>> in [V]
Setting value of time for surge protection U>> in [s]
Description
Activate / deactivate the voltage average limit value
"On" / "Off"
Time period over which the average value is calcu-
lated in [s]. (If 0 s is set, the check is not active)
Setting value of the surge protection with average
value formation U> in [V]
Description
Activate / deactivate fast RMS overvoltage discon-
nect (exceeding 135 % of rated voltage) "On" / "Off"
Setting value of time for fast surge protection (peak
value exceeded by 35 %) in [s]. This disconnect can
be configured in the time range of microseconds.
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