With LPS where the separation distance "s" is observed
If the building has an air termination system and the separation distance between the air termination system and the panels is maintained, there is no risk of a direct lightning strike to the PV system (impulse current with parameters of 10/350 µs). In this case we can install SPD type T2. A suitable representative of the SPD on position A, or on positions A and D at a distance of more than 10 m between the inverter and the panels, can be the HSA
PV 600 M. This product is determined specifically for the voltage UCPV = 600 V DC, but we also
offer variants for 1 000 V DC and 1 500 V DC. It is in the Y connection, which is resistant to the earth
fault of live conductors and has zero residual (leakage) current. If you insist on a cheaper variant,
we also offer variants in the full voltage range in U connection with a marking /2 at the end of the product
name. The entire product range brings the advantage of an exchangeable module design - the products are
marked with the letter M and meet the discharge capability for all LPL levels. It is equipped with an
internal DC arc fault disconnector and therefore no 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 HSA
PV 600 M S. The potential-free contact of this signalling is then connected to the 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, without the need for physical control of the switchboard. Due
to the small price difference between the SPDs type T2 and T1+T2, the selection of SPDs can be generalized
to the T1+T2 type in all cases, thus avoiding human errors in the implementation of the PV plant and non-compliance
with the project documentation. As an example we can offer HLSA6,5 PV 600 M S.
Since the building is equipped with an air termination system, it is necessary to install SPD type T1
in the main switchboard - at position C, or in the best case to select a fast reacting, varistor-based,
combined SPD type T1+T2+T3.
The family house normally belongs into the LPL IV level, for which the use of a 12,5 kA/pole arrester
is required. In this switchboard, at the beginning, before the PEN conductor is split into PE and N conductors,
it is common to see a TN-C system configuration with a voltage value of 3 x 230 V / 50 Hz. These conditions
correspond to the product HLSA12,5-275/3+0 M S. The marking M specifies the design with
exchangeable module, S specifies the design with remote monitoring. If the entire electrical distribution
system of the building is of type TN-S, the configuration HLSA12,5-275/4+0 M S can be
used. If the inverter is more than 10 m away from the main switchboard, it is necessary to repeat SPD
type T2 directly in front of the inverter - position B. If we consider a three-phase TN-S system, a suitable
representative is, for example, HSA-275/3+1 M S. The entire range of SPDs for the AC side is also available in a unchangeable design.
Our solutions
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SPD FOR DC (INVERTER)Nahrávám ...
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SPD FOR AC (INVERTER)Nahrávám ...
By ticking this box you will give us the information that you are not sure about the correctness of your selection. However, it is necessary to send an inquiry.
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SPD FOR ACNahrávám ...
By ticking this box you will give us the information that you are not sure about the correctness of your selection. However, it is necessary to send an inquiry.
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SPD FOR DCNahrávám ...
By ticking this box you will give us the information that you are not sure about the correctness of your selection. However, it is necessary to send an inquiry.