SMA SUNNY BOY 1300TL - Connecting the PV Array

SMA Solar Technology AG 6 Electrical Connection
Installation Manual SB13_21TL-IA-en-65 31
☐ 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 Electronic Solar Switch and the regulations in the country
of installation require an external DC switch-disconnector, you will need to install an external
DC switch-disconnector.
6.4.2 Connecting the PV Array
1. Disconnect the miniature circuit-breaker and secure against reconnection.
2. If an ESS is in use and plugged in, carefully pull it out.
3. If an external DC switch-disconnector is in use, disconnect it.
4. Check the PV strings for earth faults (see Section10.5.1 "Checking the PV Array for Earth
Faults", page54).
5. Connect the assembled DC connectors to the
inverter.
☑ There is an audible click when the
DC connectors are plugged in.
Use of Y adaptors for parallel connection of strings
The Y adaptors must not be used to interrupt the DC electric circuit.
• Do not use the Y adaptors in close proximity of the inverter. The adaptors must not be
visible or freely accessible.
• In order to interrupt the DC electric circuit, disconnect the inverter from all voltage sources
(see Section 8).
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 by the overvoltage.
• If the open-circuit voltage of the PV modules is in excess of the maximum input voltage of the
inverter, do not connect any strings to the inverter and check the design of the PV plant.