Danfoss DLX 4.6 Guía de usuario descargar pdf (Pagina 16)

16 User Guide DLX Series L00410623-1

3.3. Safety Equipment Required for Grid Connected

Systems

Ensure compliance with the local and national electrical regulations to satisfy the safety

equipment requirements.

NOTICE

Safety equipment that meets the requirements for both the DC and AC operations

must be provided and installed by the system installer in compliance with the local

and national electrical regulations, and to prevent personal injury and protect the

equipment.

3.3.1. Disconnection Devices

Disconnection devices, switches or circuit breakers, enable a shut-off from the power

source during operation. They protect the current-carrying conductors and other system

components from power surges and system malfunctions, and help to shut down the

inverter safely for maintenance and repairs.

• Both AC circuit breaker(s) and DC switch(es) are recommended to facilitate maintenance

work and repairs of the inverter.

• The disconnect devices must conform to the local and national electrical regulations, and

have an interrupt rating sufficient for the voltage and current available in the circuit.

• Each disconnection device must be readily accessible and operable without exposing the

operator to live parts. All devices must be permanently marked for their purpose.

3.3.2. Overcurrent Protection Devices

Overcurrent protection devices, fuses or circuit breakers, prevent the circuit conductors

from overheating as a result of overload, short circuit or ground fault.

• An overcurrent protection device is required on every current carrying conductor.

• If a fuse blows or a circuit breaker trips the cause should always be determined before

replacing or resetting them.

• It is recommended to install an RCD (Residual Current Device) of type A between the AC

grid and the inverter, to be able to detect leakage current and interrupt fault paths. The

needed detection range must comply with the relevant local and national electrical

regulations!

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Danfoss DLX 4.6 Guía de usuario Pagina 16