SMA SB 1300TL - Manual (Page 32)

☐ The thresholds for the input voltage and the input current of the inverter must be adhered to
(see Section 11 "Technical Data", page 48).
☐ 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).
☐ If the inverter is not equipped with an ESS and the regulations in the country of installation
require an external DC load-break switch, you must install an external DC load-break switch.
Use of Y adapters for parallel connection of strings
The Y adapters must not be used to interrupt the DC 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 circuit, always disconnect the inverter as described in this
document (see Section 10, page 46).
6.5.2 Connecting the PV Array
Destruction of the inverter due to overvoltage
If the open-circuit voltage of the PV modules exceeds the maximum input voltage of the inverter,
the inverter can be destroyed due to overvoltage.
• If the open-circuit voltage of the PV modules exceeds the maximum input voltage of the
inverter, do not connect any strings to the inverter and check the design of the PV system.
Damage to the DC connectors due the use of contact cleaner of other cleaning agents
Some contact cleaners or other cleaning agents may contain substances that decompose the
plastic of the DC connectors.
• Do not use contact cleaners or other cleaning agents for cleaning the DC connectors.
Procedure:
1. Ensure that the circuit breaker is switched off and that it cannot be reconnected.
2. If an external DC load-break switch is installed, disconnect it from all voltage sources.
3. If the ESS is installed and plugged in, carefully remove the ESS.
4. Ensure that there is no ground fault in the PV array (see service manual at www.SMA-
Solar.com).
6 Electrical Connection SMA Solar Technology AG
Operating Manual SB13-21TL-BE-en-11 32