Connecting The Pv Array - SMA SUNNY TRIPOWER CORE2 Operating Manual

8 Electrical Connection
6. Remove the cable and go back to step 2.
7. Push the swivel nut up to the thread and tighten
(torque: 2 Nm).
8.6.3

Connecting the PV Array

Danger to life due to electric shock from destruction of the measuring device
due to overvoltage
Overvoltage can damage a measuring device and result in voltage being present in the
enclosure of the measuring device. Touching the live enclosure of the measuring device results in
death or lethal injuries due to electric shock.
• Only use measuring devices with a DC input voltage range of 1100 V or higher.
Damage to the product due to ground fault on DC side during operation
Due to the transformerless topology of the product, the occurrence of ground faults on DC side
during operation can lead to irreparable damage. Damages to the product due to a faulty or
damaged DC installation are not covered by warranty. The product is equipped with a protective
device that checks whether a ground fault is present during the starting sequence. The product is
not protected during operation.
• Ensure that the DC installation is carried out correctly and no ground fault occurs during
operation.
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.
Procedure:
1. Ensure that the AC miniature circuit breaker is switched off and that it cannot be reconnected.
46 STP110-60-BE-en-16
WARNING
NOTICE
NOTICE
SMA Solar Technology AG
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Operating manual