Installation Guide
DLX seriesL00410622-01
9
2.1.1. 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.
2.1.2. 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!
2.2. Mechanical Installation
The mounting surface and the mounting method must be suitable for the inverter’s
weight, dimensions and possible housing temperature. This is crucial to maintaining the
efficiency of the inverter!
WARNING
Correct installation prevents the inverter from falling from the wall! The mounting
surface must be suitable for the weight 20-22 kg and temperature (90 °C) of the
inverter.
CAUTION
Protect the inverter from flammable and explosive environments, as the inverter
heat sink can reach temperatures up to 90 °C during long-periods of high
performance.
•
The inverter is suitable for outdoor operation, but should be sheltered from direct
sunlight, snow, rain, dust and sand.
•
Location should be in proximity to the PV arrays to minimize DC losses.
