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Installing the inverter
Page 22
Operating Instructions for Powador 7700-9600_EN
EN
EN
Authorised electrician
NOTE
The electrician is responsible for the design of the fuses.
KACO new energy does not guarantee or warranty the installation.
In addition, note and record the information for installation of the PV generator.
Determine values from
module specifications.
* Isc
* Max system voltage
Determining fuse size per string
1.6 x Isc = fuse value
Determining number of parallel mod-
ules / strings
N = (parallel modules / strings)
Does the defined fuse value exceed
the maximum Isc range?
Max Isc range = (N-1) x Isc
PV string fuse In = 1.6 x Isc
Select the equivalent or next higher PV
string fuse
Vn => max system voltage
Insert
string
fuses
no PV string
fuse
required
Selection diagram for PV fuse
No
Isc : short-circuit current
Yes
Insert string fuses
1. Remove and store short-circuit bridges.
2. Insert suitable string fuses into the DC positive fuse holders.
»
Continue connecting the PV generator.