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3. Installation
6.
7.
8.
3
9.
3.6. PV Connection
Note:
When choosing the installation place, ensure that all labels are visible at all times.
For details refer to the section
Use a suitable voltmeter that can measure up to 1000 V DC.
1.
2.
3.
4.
Illustration 3.13: DC Connection Area
16
The Protective Earth wire (PE) is mandatory and must be connected directly to the
chassis PE terminal. Insert the wire and fasten the screw to secure the wire.
All wires must be properly fastened with the correct torque. See the section
Data, Torque Specifications for Installation .
Close the front cover, and remember to verify that both front screws are applied with
the correct torque to obtain PE connection.
Close main circuit breaker.
For safety, check all wiring. Connecting a phase wire to the neutral terminal may
permanently damage the inverter. Do not remove the short circuit bridge at (1).
Specifications .
Do NOT connect PV to earth!
First verify the polarity and maximum voltage of the PV arrays by measuring the PV
open circuit voltage.The PV open circuit voltage must not exceed 1000 V DC.
Measure the DC voltage between the plus-terminal of the PV array and Earth (or the
green/yellow PE cable). The voltage measured should approximate zero. If the voltage
is constant and not zero there is an insulation failure somewhere in the PV array.
Locate and fix the failure before continuing.
Repeat this procedure for all arrays. It is allowed to distribute the input power on the
inputs unevenly, presuming that:
•
The nom. PV power of the inverter is not exceeded (10.3 / 12.9 / 15.5 kW).
•
The individual input is not exceedingly loaded, and not more than 6000 W.
•
The maximum short circuit current of the PV modules at STC (Standard Test
Conditions) must not exceed 12 A per input.
8000038781_00_BAL_en / L00410564-01_02
On the inverter turn the PV load switch into
off position. Connect the PV cables by means
of MC4 connectors. Ensure correct polarity!
The PV load switch can now be switched on
when required.
Technical
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