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INSTALLATION AND OPERATION MANUAL CRYSTALLINE SOLAR MODULES Q-CELLS SE - AUSTRALIA
5.3 ELECTRICAL LAYOUT
YOU CAN FIND THE DETAILED ELECTRICAL PARAMETERS IN THE PRODUCT DATA SHEET.
Only connect modules of the same type and the same power class. This is the only way to
achieve optimal yields.
It may occur during normal operation that the module provides a greater current and / or a
higher voltage than that determined under standardised test conditions. Therefore, refer to
AS / NZS 5033 and the Clean Energy Council Guidelines (Chapter 3.2).
• Only connect modules with the same power class. Please particularly observe the sorting
given in the data sheet and the tolerance ranges for the V
oc
and V
mp
.
• Connection of modules in series is only permitted up to the maximum system voltage speci-
fied in the respective valid data sheet revision.
• Operate taking into account all working conditions and relevant technical regulations and
standards. In this way you ensure that the maximum system voltage, including the neces-
sary safety margins are not exceeded.
• Also take the voltage limitation of the inverter into account when establishing the string
length.
Only connect modules of the same type and the same voltage class.
Ensure the observance of the maximum reverse current load capacity given in the data sheet.
In the event of reverse currents (caused by module defects, ground leakage or isolation failure),
modules can otherwise be damaged.
In order to safely account for reverse currents, we recommend the following fuse variants:
1) LAYOUT WITH LIMITATION OF THE NUMBER OF STRINGS CONNECTED PARALLEL :
Without further
measures for current blocking, a maximum of three module strings may be operated parallel
on an inverter or on a MPP tracker.
2) LAYOUT WITH STRING FUSES :
In this case, protect each string of modules by 10 A string fuses
on the positive and negative conductors. Observe the maximum permitted number of strings
according to the specifications of the string fuse manufacturer and the respective technical
guidelines.
BEWARE!
When installing modules from different product revisions, observe the minimum per-
missible limitation of the product revisions used.
For installations > 500 m from sea, the modules can be operated with inverters with or without
a transformer.
For installations < 500 m from sea, functional grounding according to Chapter 5.4 is required.
In this case only use galvanic isolated inverters (inverters with a transformer).
MODULE SELECTION
SAFETY FACTOR
SERIES CONNECTION
PARALLEL CONNECTION
INVERTER
