ABB PVS-175-TL Series, Quick Installation Manual, Page: 28 / 46

28 Quick Installation Guide - PVS-175-TL “A.1 Version”
EN
10. Input connection (DC)
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
Check absence of any leakage to ground in the PV generator.
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 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
32.0089P0001-UR
32.0093P0001-UR
4 - 6 mm²
4 - 6 mm²
10 mm²
4.7 - 6.4 mm
6.4 - 8.4 mm
6.4 - 8.4 mm
Female Stäubli PV-KST4-EVO 2
32.0086P0001-UR
32.0088P0001-UR
32.0092P0001-UR
4 - 6 mm²
4 - 6 mm²
10 mm²
4.7 - 6.4 mm
6.4 - 8.4 mm
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 of different type or brand than those specified above could cause
serious damage to the unit and will lead to the invalidation of the warranty.