Dc Load-Break Switch; Suggestion On Fuse Choosing - SMA STRING-COMBINER DC-CMB-U10-16 Manual De Instalación

SMA Solar Technology AG
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4.3 DC Load-Break Switch

The Combiner Box can be disconnected on the inverter side by means of a DC load-break switch. The use of the
DC load-break switch is only permissible if LV/HRC fuses with gPV characteristic are installed upstream in the inverter or
main DC distribution box.

4.4 Suggestion on fuse choosing

Derating Combiner Fuse
Ambiant temperature => Current derating
<= +40° reduction factor of 0.6
> +40° up to +55° reduction factor of 0.55
The following applies
I ≥ ISC_STC / Reduction factor
NOM FUSE
Installation Manual
Explanation
Danger to life due to high voltages
The product operates at high voltages. All work on the product must be carried out by
qualified persons only.
Risk of burns due to hot surfaces The product can get hot during operation. Avoid contact
during operation. Allow the product to cool down sufficiently before carrying out any work.
Wear personal protective equipment such as safety gloves.
Observe the documentation.
Observe all documentation supplied with the product.
CE marking
The product complies with the requirements of the applicable EU directives.
WEEE designation
Do not dispose of the product together with the household waste but in accordance with
the locally applicable disposal regulations for electronic waste.
4 Product Description
DC-CMB-IA-U10-xx-en 11