22 Installation and Operating Instructions V01
5.5 DC connection
5.5.1 Requirements for the DC connetion
•Repuirements for the PV modules per MPP
input;
– The same type
– The same number of series-connected PV modules
– Identical alignment
– Identical tilt
• The thresholds for the input voltage and the input current of the inverter must be
adhered to (see Section 10.1 "Technical DC input data").
• On the coldest day based on statistical records, the open-circuit voltage of the PV
array must never exceed the maximum input voltage of the inverter.
• The connection cables of the PV modules must be provided with the connectors
• The positive connection cables of the PV modules must be fitted with the positive DC
connectors. The negative connection cables of the PV modules must be provided
with the negative DC connectors.
Information for use Y adaptors
Y adaptors must not be visible or freely accessible in the immediate vicinity of the inverter.
•T
he DC circuit must not be interrupted by Y adaptors
•
In order to interrupt the DC electric circuit, disconnect the inverter from all voltage
sources.
Danger to life due to high voltages in the inverter
• Before connecting the PV generator, ensure that the DC-switch is switched off and that it
cannot be reactivated.
• Do not disconnect the DC connectors under load.