Kaco Powador 2002 Operating Instructions Manual page 31

S e ctio n 5 · Insta l lati on an d S ta rt-Up
AC TI O N
Before connecting the PV generator to the Powador,
check that the PV generator is not earthed.
–
Measure the DC voltage between the protective earth
(PE) and the positive lead and between the protective
earth (PE) and the negative lead of the PV generator.
–
If stable voltages can be measured, this indicates
a ground fault in the PV generator or its wiring. The
ratio between the measured voltages gives an indica-
tion as to the location of this fault. Rectify this fault
before taking any further measurements.
–
Measure the electrical resistance between the protec-
tive earth (PE) and the positive lead and between the
protective earth (PE) and the negative lead of the PV
generator.
–
Low resistance (< 2 MΩ) indicates a high-impedance
ground fault of the PV generator, which must be fi xed
prior to continuing with the installation.
The voltage of the solar generator must be meas-
ured before connecting the DC leads to the
inverter terminals. The DC voltage must not
exceed the maximum generator voltage. Con-
necting to a higher voltage will destroy the unit.
The PV generator can be connected in the following ways:
–
Cable fi ttings
–
Tyco plug connectors
–
MC plug connectors
The cable fi ttings are already installed upon delivery. As an
option, Tyco and MC plug connectors can be delivered with
the inverter.
AT TE NT I O N
To achieve protection rating IP54, unused cable fi ttings
must be closed off using the included blind caps.
A C TI O N
To do this, unscrew the cable fi ttings until you can insert
the cables through the fi tting, then screw the ends of the
cables into place in the connection terminals labelled
"PV+" and "PV-". When doing this, ensure that the
polarity is correct. Tighten the cap of the cable fi tting.
Page 18
C A UT IO N
Connecting the PV generator using cable fi ttings
Connecting the PV generator using MC or Tyco plug
connectors (optional)
As an option, MC or Tyco plug connectors can be delivered
with the inverter. These can be used instead of the cable
fi ttings that were already installed upon delivery. These pre-
installed cable fi ttings must fi rst be removed before installing
the appropriate plug connectors.
W A RN I N G
Always disconnect the inverter from the PV gen-
erator by operating the integrated DC disconnec-
tor before pulling apart the plug connector. Fail-
ure to observe this may cause arcing, which can
result in a hazard to health and to the unit.
AC TI ON
Unscrew the cable fi ttings from the cut-outs in the base
plate of the inverter.
Insert the Tyco or MC sockets from the outside through the
cut-outs, and secure them from the inside using the black
plastic nuts.
Installation Instructions Powador 2002 / 3002 / 4202 / 5002 / 6002_EN