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Installation and Operation Manual M125HV EU V3 EN 2021-07-12
4 Product overview
DC-side components
The connection between the inverter and the solar modules
is
disconnected
when both DC isolating switches are in the
OFF
position.
Fig. 4.13: Both DC isolating switches in theON position = the
connection to the solar modules is closed
The connection between the inverter and the solar modules
is
closed
when both DC isolating switches are in the
ON
position.
France: The DC isolating switches meet the requirements of
UTE 15-712-1 (VDE 0100 712).
4.5.3 DC string fuses
Fig. 4.14: Covers of the DC string fuses
Fig. 4.15: View of the DC string fuses with covers removed
The assignment of the DC string fuses to the DC strings is shown
on the covers.
manufacturer.
Littlefuse
Part Number
SPXV 20
Nominal current
20 A
Rated voltage
1500 V
Type
10x85 pressed ferrule
Standards
IEC 60269-6
Table 4.5.:
Specification of the pre-installed DC string fuses
Instead of the pre-installed 20 A DC string fuses, identical 15 A
DC string fuses from Littlefuse can be used. 15 A DC string fuses
are
not
available from Delta and must be ordered elsewhere.
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