ABB PVS-60-TL-US Product Manual page 110

Condition
Voltage (V)
A < 0.50 Vnom (Fixed)
B 0.50 Vnom ≤ V < 0.88 Vnom (Adj.) Rated (60Hz)
C 1.10 Vnom < V < 1.2 Vnom (Adj.)
D 1.2 Vnom ≤ V(Fixed)
E Rated
F Rated
G Rated
H Rated
Reconnection 300s (Default) (Adjustable 20s to 1000s)
4. Active Power Control
This inverter offers several modes for active power reduction.
- Active Power Curtailment: Sets a new value of active power as % of
Pmax. When enabled, a new value will be set in the inverter.
- CEI Average VGrid Derating (only italian grid standard): Sets, after a
specific threshold, an active power derating based on the average of
Vac on 10 minutes as per CEI-021 italian grid standard.
- Volt/Watt settings: P(V). Under this mode, the level of active power
exported by the inverter is a function of the operating grid voltage, also
known as a Volt/Watt curve. The 4 points of the default curve, where
you can set the % of Vnom values and related % of Pmax, can be
modified using the internal Webserver. When enabled, the curve will be
set in the inverter.
- Frequency/Watt function (Frequency Control: P(f)): In this mode, the
inverter limits the active power as a function of the grid frequency.
5. Ramp controls
The inverter is designed to control the rate at which output power is
increased, either at startup, or after a temporary low power condition
on the PV array (such as fast shading). The following ramp controls are
provided on this inverter.
- Normal ramp: The normal ramp defines the maximum rate at which the
inverter can increase the output power under normal operation. The
normal ramp control limits the fluctuations in the output power in order
to prevent instabilities on the utility grid.
- Soft start: The soft-start ramp defines the maximum rate at which the
inverter can increase the output power when the inverter is first starting
up. This startup may occur on a daily basis or when the inverter restarts
after an abnormal grid event has ended.
This inverter has been factory programmed to automatically disconnect
from the utility distribution system in compliance with UL 1741 and IEEE
1547-2003 specifications. Default voltage and frequency trip limit and trip
time settings to comply with these standards are shown in table below.
The internal Webserver can be used to adjust Voltage and Frequency
Trip Limit and Trip Time Parameters according to Grid requirements of
installation country.
Utility source
Frequency (Hz)
Rated (60Hz)
Rated (60Hz)
Rated (60Hz)
f > 60.5Hz (Default)
(Adj. 60.1 to 66.0 Hz)
f < 59.3 Hz (Default)
(Adj. 50.0 to 59.9 Hz)
f << 57.0 Hz (Default)
(Adj. 50.0 to 59.9 Hz)
f >> 63.0 Hz (Default)
(Adj. 60.1 to 66.0 Hz)
- 110 -
7 - Operation
Max. time (sec) at 60Hz before
2
cessation of current
0.16 (default)(Adj. Set Points 0.16 to 50s)
2 (Default)(Adj. Set Points 0.16 to 100 sec)
1 (Default)(Adj. Set Points 0.16 to 100 sec)
0.16 (Adj. 0.001 to 0.16s)
0.16 (Default)
(Adj. Set Points 0.16 to 1000 sec)
0.16 (Default)
(Adj. Set Points 0.16 to 1000 sec)
0.16 (Default)
(Adj. Set Points 0.16 to 1000 sec)
0.16 (Default)
(Adj. Set Points 0.16 to 1000 sec)