10
FCC / RSS Com-
pliance
Insulation Moni-
toring
The inverter is fitted with the following safety function as required by UL 1741 and the Na-
tional Electrical Code:
Insulation monitoring
In photovoltaic systems with ungrounded solar modules, the inverter checks the resistance
between the photovoltaic system's positive or negative pole and the ground potential. In
the case of a short circuit between the DC+ or DC- cable and the ground (e.g., due to poorly
insulated DC cables or faulty solar modules) the inverter disconnects from the grid.
Arc Detector / In-
terrupter
The inverter has an integrated arc detector / interrupter, which detects and deletes serial
arcs.
A serial arc may occur after the following example errors or situations:
-
poorly connected DC plug
-
defective solar module connection sockets
-
high resistance solder connections between the cells of a solar module
-
incorrect cable connected to the input terminal of an inverter
-
defective DC cables that allow a connection to the ground.
If an arc is detected, the power is shut down and the grid power feed operation is interrupt-
ed. A status code appears on the display.
The status code on the display must be reset manually before the grid power feed opera-
tion can be resumed.
The power shut down also deletes the serial arc.
FCC
This device corresponds to the limit values for a digital device of class B in
accordance with Part 15 of the FCC regulations. The limit values should pro-
vide adequate protection against harmful interference in homes. This device
creates and uses high frequency energy and can interfere with radio com-
munications when not used in accordance with the instructions. However,
there is no guarantee against interference occurring in a particular installa-
tion.
If this device interferes with radio or television reception when turning the de-
vice on and off, it is recommended that the user solve this with one or more
of the following measures:
-
adjust or reposition the receiving antenna
-
increase the distance between the device and the receiver
-
connect the device to another circuit, which does not include the receiv-
er
-
for further support, please contact the retailer or an experienced radio/
TV technician.
Industry Canada RSS
The device corresponds to the license-free Industry Canada RSS stan-
dards. Operation is subject to the following conditions:
(1) The device may not cause harmful interference
(2) The device must accept any interference received, including interfer-
ence that may cause undesired operation.
