RU , GSE, FOTO CONTROL, QUATROFREM v.2.53x
15. apríla 2019
Page 74 from 97
Name [ID]
Description
Def.
3
Refer to chapter 3.1
(str. 13) by product type.
AC
Undervoltage
[626]
Minimum permissible value of grid voltage.
340.0 V
Fast AC undervoltage
[668] ÷ V
grid
3
RMS value of minimum permissible phase-to-phase voltage on terminals L1, L2, L3.
After decrease of AC voltage [221] (page 19) below this value for the time given by
Time V AC [771] (page 74), inverter generates a fault E34-Grid undervoltage (page
33).
3
Refer to chapter 3.1
(str. 13) by product type.
Time V AC [771]
Response time for generating faults E34-Grid undervoltage (page 33) and
E35-Grid overvoltage (page 33).
3.60 s
Fast time V AC [770]
÷ 3000.00
Adjusts the sensitivity of fault evaluation. Value of response time must correspond to
the terms for connection to the distribution network. This value cannot be lower than
the value of Fast time V AC [770] (page 73).
Overfrequency [628]
Tolerance of grid frequency exceeding for generating the fault E33-Grid
1.0 Hz
0.1 Hz ÷ 5.0 Hz
It represents the maximum permissible frequency above the value of Nom. freq. [292]
(page 37). Reaction time of the fault is given by Fgrid fault time [773] (page 74).
Underfrequency
[629]
Tolerance of grid frequency drop for generating the fault E33-Grid frequency
(page 33).
1.0 Hz
0.1 Hz ÷ 5.0 Hz
It represents the maximum permissible frequency below the value of Nom. freq. [292]
(page 37). Reaction time of the fault is given by Fgrid fault time [773] (page 74).
Fgrid fault time [773]
Reaction time for the generation of low or high frequency grid fault E33-Grid
frequency (page 33).
0.20 s
0.01 s ÷ 3000.00 s
Adjusts the sensitivity of fault evaluation. Value of response time must correspond to
the terms for connection to the distribution network.
Sync.
fault
sensitivity [939]
Setting the sensitivity of the inverter to the fault E21-Synch. error (page 32),
unbalance or high harmonic distortion of the voltage on the inverter side.
100 %
20 % ÷ 150 %
When the sensitivity is low, inverter responses during higher distortion and with a
higher delay. When the quality of supply voltage is lower, the quality of control is lower
as well.
Grid
check
time
[1192]
START delay after power on or failure. All grid quantities have to be within
their limits for the time set by this parameter.
30.0 s
0.0 s ÷ 36000.0 s
This parameter is used to meet the requirements for connecting the inverter to the
public grid. It is also used to block short start-ups during power-on of DC voltage
supply (such as PV panels and to start-up individual inverters gradually after power is
restored.
Undervoltage while
STOP [1195]
Turning on/off the evaluation of udnervoltage while not in operation (STOP). enabled
disabled | enabled
ACT. ANTI-ISLANDING
Group of parameters number [1136]
Parameters of active anti-islanding by measuring the grid impedance.
MENU \ SETTINGS \ FAULTS AND WARNINGS \ GRID TEST \ ACT. ANTI-ISLANDING
Name [ID]
Description
Def.
Amplitude
inj.
current [1138]
Amplitude of high-harmonic injected current. This value is understood as a
percentage of nominal inverter current.
0.0 %
0.0 % ÷ 20.0 %
Phase shif inj.
current [1139]
Phase shift of injected current harmonic.
0.0 °
-180.0 ° ÷ 180.0 °
Grid
imp.
threshold [1140]
Grid impedance threshold. When grid impedance exceeds this value, fault E53-
High grid impedance (page 34) is generated. By setting the threshold to zero,
fault is no longer generated.
0.000
Ohm
0.000
Ohm
÷
1000.000 Ohm
