Sistema centralizado
A centralized system means that a large number of strings is connected to one central inverter. In this application we have to consider extensive wiring on the DC side, which makes it necessary to install SPD type T1, or in the best case to choose a combined SPD type T1+T2 on both A and D positions. A suitable SPD representative can be HLSA12,5
PV 1 500. This product is determined specifically for UCPV = 1 500 V DC, but we also offer
variants for 1 000 V DC. It is in Y connection, which is resistant to earth fault of live conductors and
has zero residual (leakage) current. If you insist on a cheaper variant, we also offer variants in the
same voltage range in U connection with a marking /2 at the end of the product name. The HLSA12,5 PV product
series for LPL levels I and II is not equipped with an internal DC arc fault disconnector, and therefore
back-up fuse is required. If remote monitoring of the surge protection status is required, the variants
marked S can be used, i.e. for example HLSA12,5 PV 1 500 S. The potential-free contact
of this remote monitoring is then connected to the building‘s control system (typically as an input of
a PLC control system), where it permanently informs the investor about the status of the surge protection
device, without the need for physical control of the switchboard.
On the other hand, on the AC side, it is sufficient to install only one SPD type T1, or in the best case
to select a combined SPD type T1+T2+T3, at position C, as the distance between the inverter and the main
switchboard is not expected to be longer than 10 m. In this switchboard, it is common to find a TN-C system
configuration with a voltage size of 3x 230 V / 50 Hz. HLSA25G-255/3+0 S in the remote
monitoring version corresponds to these conditions. If the entire electrical distribution of the building
is of TN-S type, the HLSA25G-255/4+0 S configuration can be used. There are also cases
where there is an isolated power supply system on the AC side. For this case it is important to select
an SPD from a series directly designed for the IT power supply system, e.g. HLSA12,5-440/3+1 S
IT.
Our solutions
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SPD FOR DC (INVERTER)Nahrávám ...Al marcar esta casilla nos indica que no está seguro de que su selección sea correcta. No obstante, es necesario enviar una consulta.
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SPD FOR ACNahrávám ...Al marcar esta casilla nos indica que no está seguro de que su selección sea correcta. No obstante, es necesario enviar una consulta.
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SPD FOR DCNahrávám ...Al marcar esta casilla nos indica que no está seguro de que su selección sea correcta. No obstante, es necesario enviar una consulta.