Fimer PVS-175-TL - DC Input and String Wiring

FIMER_PVS-175-TL A.1 Version_Product manual_EN_RevC-
F
84
Input connection (DC)
After the preliminary checks and therefore having verified that there are no problems in the photovoltaic
system, you may connect the inputs to the inverter.
WARNING – B Comply with the maximum input current relating to the quick-fit connectors as
indicated in the technical data.
WARNING – B The reverse polarity can cause severe damage and electric arc hazards! In
case of reverse input strings do not disconnect them while under load and do not turn the
DC disconnect switches (19) to OFF position. Wait until input current are below 0.5A (when
solar irradiance declines at night) and turn the DC disconnect switches (19) to OFF position,
disconnect the DC input quick fit connectors (18) and correct the wrong polarity of the string.
WARNING – B When the photovoltaic panels are exposed to sunlight they provide continuous
DC voltage to the inverter. To avoid risks of electrical shock, all wiring operations must be
carried out with the DC disconnect switches (internal (19) and external to the inverter) and
AC disconnect switches (internal (09) or external to the inverter) OFF.
WARNING – B The inverters referred to in this document are TRANSFORMERLESS. This
type requires the use of insulated photovoltaic panels (IEC61730 Class A Rating) and the
need to keep the photovoltaic generator floating with respect to ground: no terminal of the
generator must be connected to ground.
For the string connections it is necessary to use the DC input quick fit connectors (18) located on the
left side of the wiring box.
The models of the counterpart for quick fit connectors to be used to connect the input strings are
shown in the table below:
Type Manufacturer Model P/N
Conductor cross
section
Ø cable
gland
Male Stäubli PV-KBT4-EVO 2
32.0087P0001-UR
4 - 6 mm² 4.7 - 6.4 mm
32.0089P0001-UR
4 - 6 mm² 6.4 - 8.4 mm
32.0093P0001-UR
10mm² 6.4 - 8.4 mm
Female Stäubli PV- KST4-EVO 2
32.0086P0001-UR
4 - 6 mm² 4.7 - 6.4 mm
32.0088P0001-UR
4 - 6 mm² 6.4 - 8.4 mm
32.0092P0001-UR
10mm² 6.4 - 8.4 mm
ATTENTION – A According to IEC 62548 (Photovoltaic (PV) arrays – Design requirements),
connectors mated together in a PV system shall be of the same type from the same
manufacturer, i.e. a plug from one manufacturer and a socket from another manufacturer or
vice versa shall not be used to make a connection.
ATTENTION – A Using mating parts that are not compliant with the quick fit connector
models on the inverter could cause serious damage to the unit and lead to invalidation of
the warranty.