SMA SUNNY TRIPOWER 20000TL High Efficiency, Руководство по эксплуатации

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☐ The thresholds for the input voltage and the input current of the inverter must be adhered to
(see Section 10 "Technical Data", page 36).
☐ 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 positive connection cables of the PV modules must be fitted with the positive DC
connectors (for information on assembling DC connectors, see the DC connector installation
manual).
☐ The negative connection cables of the PV modules must be fitted with the negative DC
connectors (for information on assembling DC connectors, see the DC connector installation
manual).
Use of Y adapters for parallel connection of strings
The Y adapters must not be used to interrupt the DC electric circuit.
• Do not use the Y adapters in the immediate vicinity of the inverter. The adapters must not
be visible or freely accessible.
• In order to interrupt the DC electric circuit, always disconnect the inverter as described in
this document (see Section 9, page 34).
6.4.2 Connecting the PV Array
1. Ensure that the circuit breaker is switched off from all three line conductors and that it cannot
be reconnected.
2. Check the strings for ground faults (see service manual at www.SMA-Solar.com).
3. Check whether the DC connectors have the correct polarity.
If the DC connector is equipped with a DC cable of the wrong polarity, the DC connector must
be configured again. The DC cable must always have the same polarity as the DC connector.
4. Ensure that the open-circuit voltage of the PV array does not exceed the maximum input
voltage of the inverter.
5. Connect the assembled DC connectors to the
inverter.
☑ The DC connectors snap audibly into place.
6 Electrical Connection SMA Solar Technology AG
Operating Manual 25 STP20-25TL-BE-en-10