7
READ THE MANUAL –
E
According to CEC requirements the UNO-
DM-3.3_3.8_4.6_5.0-TL-PLUS-US-Q (no display models), display
measured net generated energy and measured instantaneous
power using a remote device like a smartphone, tablet or PC.
Access it by connection to the inverter internal Webserver (please
see the beginning of this paragraph on how to access to the internal
webserver). In addition it is possible to use the mobile App ‘FIMER
ability Energy Viewer for solar plants’ and the FIMER Web portal
Aurora Vision (please refer to product manual for further details) to
monitor all production data.
11. Response to abnormal
conditions
Abnormal grid conditions:
The inverter is programmed to respond to abnormal grid conditions, as
specified in the below table:
Condition
Utility source
Max. time (sec) at 60Hz
before cessation of
current
Voltage (V)
Frequency
(Hz)
A
<0.50 Vnom
1
(Fixed)
Rated (60Hz)
Default setting
3
0.16 (Adj.
0.16 to 50)
B
0.50 Vnom
1
≤ V
< 0.88 Vnom
1
Rated (60Hz)
Default setting
3
2 (Adj. Set
Points 0.16 to 100 sec)
C
1.10 Vnom
1
< V
< 1.2 Vnom
1
Rated (60Hz)
Default setting
3
1 (Adj. Set
Points 0.16 to 100 sec)
D
1.20 Vnom
1
≤ V
Rated (60Hz)
Default setting
3
0.16 (Adj.
0.001 to 0.16 sec)
E
Rated
Default setting
3
f > 60.5 Hz (Adj.
60.1 to 66.0 Hz)
Default setting
3
0.16 (Adj.
Set Points 0.16 to 1000 sec)
F
Rated
Default setting
3
f < 59.3 Hz (Adj.
50.0 to 59.9 Hz)
Default setting
3
0.16 (Adj.
Set Points 0.16 to 1000 sec)
G
Rated
Default setting
3
f << 57.0 Hz
(Adj. 50.0 to
59.9 Hz)
Default setting3 0.16 (Adj.
Set Points 0.16 to 1000 sec)
H
Rated
Default setting
3
f >> 63.0 Hz
(Adj. 60.1 to
66.0 Hz)
Default setting3 0.16 (Adj.
Set Points 0.16 to 1000 sec)
Reconnection 300s (Default setting
3
). Adjustable 20s to 1000s.
1. Vnom is the nominal output voltage rating.
2. Trip limit and trip time accuracy specification is as follows: Voltage: +/-
2%, Frequency: +/- 0.10Hz, Time: 2 grid cycles (33ms @ 60Hz).
3. Default settings aligned with IEEE 1547-2003 requirements.
To adjust voltage and frequency and disconnect times to meet local utility
requirements, make modifications are made using the inverter embedded
web user interface. The Token is required to unlock the “Admin Plus”
functionalities (contact FIMER solar inverter technical support 1-877-261-
1374).
Fault currents and durations:
During a grid fault including a short circuit condition, the inverter may inject
current into the grid as specified below:
Utility
voltage (V)
Fault current RMS (A)
1 cycle
3 cycle
5 cycle
208
17.4
15.9
15.8
240
17.1
16.5
16
Output power derating at high ambient temperature:
Under high ambient temperatures, the inverter is designed to automatically
reduce its output power. Detailed derating curves by model are provided in
the product manual found on www.fimer.com.
12. AFD (arc fault detection)
The Arc Fault Circuit Protection required by NFPA 70 Article 690.11 is
provided by the inverter.
The AFD performs a self-test when the system is started:
• If the self-test results are OK, the inverter will continue to AC grid
connection.
• If a potential problem on the AFD board is detected, the self test will result
in error E053.
During normal operation the input current is continually measured and
analyzed.
• If a DC arc fault is detected during operation, the inverter disconnects
from AC grid and generates an E050 error code (readable through internal
Webserver).
Based on the above conditions, the Leds behaviour is described in the
table below:
POWER
ALARM
GFI
Arc Fault pending OFF
ON
ON
Self Test Failed
OFF
ON
Blinking
(200ms period)
In order to reset the error, log into internal webserver and press on “reset
AFD” button. This will clear the E050 error and restart the self test. If self-
test results are OK, the inverter will reconnect to the AC grid; if the DC arc
fault is still present, the inverter will result in error E050.
READ THE MANUAL –
E
Refer to the product manual (downloadable
on www.fimer.comfor troubleshooting suggestions.
The AFD self-test can be manually started anytime using the following
procedure:
• Turn off the inverter (switching off both DC and AC switches),
• Turn on both the DC and AC switches and wait for self-test result.
ATTENTION –
A
If the AFD trips frequently, it means arcs are
occurring. Turn the inverter OFF and request a complete check of
the system wiring, including all connections and junction boxes, to
locate the problem.
13. Grid support functions
The inverter is equipped with advanced grid support functionality that
is useful to support reactive loads and also assist in reliable operation
of the utility grid in the presence of a large number of distributed energy
generation sources. This section provides an overview of the available grid
support functions.
The parameters related to the grid support functions that are in this inverter
can be modified by:
• Accessing the embedded Web User Interface.
• Accessing to settings under the Service menu requires a time-limited
password, which can be obtained by calling FIMER solar inverter
technical support at 1-877-261-1374.
1. Voltage ride-through
This inverter provides parameters to respond to undervoltage and
overvoltage events. The inverter is designed to operate normally within
the specified operating range. If voltage excursions occur, the inverter is
designed to continue operating normally or cease to export power for a
specified delay. Beyond this programmed delay, the inverter disconnects
from the grid in the event of an abnormal voltage condition.
2. Frequency ride-through
This inverter provides parameters to respond to underfrequency and
overfrequency events. If frequency excursions occur, the inverter is
designed to continue operating normally for a specified delay. Beyond this
programmed delay, the inverter disconnects from the grid in the event of an
abnormal voltage condition.