8
9
INSTALLATION AND OPERATION MANUAL SolahartXXXBLK – AU
INSTALLATION AND OPERATION MANUAL SolahartXXXBLK – AU
2 PLANNING
2.3 Mounting options
Module Selection
For detailed key electrical data, please refer to the actual
data sheet referring to the relevant Module (available at
www.solahart.com.au).
Ä
Only connect modules of the same type and power
class.
Safety Factor
During normal operation, a module may generate a greater
current and / or higher voltage than that determined under
standardised test conditions. Please use a safety factor of
1.25 for the following:
•
Calculating the voltage measurement values (V
oc
) of
components
•
Calculating the current measurement values (I
SC
) of
conductors
•
Sizing of control systems connected to the outlets of
the solar modules
Ä
Please follow the valid national guidelines for the
installation of electrical systems.
Ä
Please refer to the latest revision of AS/NZS 5033
(including all relevant amendments) and the Clean
Energy Council Guidelines (for Australia).
Series Connection
Connection of modules in series is only permitted up to
the maximum system voltage as listed in the applicable
data sheet of all the relevant modules to be installed.
Ä
Take into account all possible operating situations and all
relevant technical norms and regulations when designing
the system. It has to be ensured that the maximum
system voltage, including all necessary safety margins,
is not exceeded.
Ä
Take the voltage limit of the inverter into account when
determining the maximum number of modules in the
string.
Parallel Connection
Modules may be damaged by the occurrence of reverse
currents (caused by module defects, ground leaks, or
defective insulation).
Ä
Ensure that the maximum reverse current load capacity
indicated in the data sheet is met.
In order to limit reverse currents that may occur, we
recommend using the following safety options:
1) Layout with a limited number of parallel connected
strings :
Please refer to the latest revision of AS/NZS 5033
(including all relevant amendments) for parallel string
overcurrent protection requirements.
2) Layout with string fuses :
place fuses for each string of modules at the plus and
minus ends. Use gPV-fuses according to IEC 60269-6.
Observe the maximum permitted number of strings as
indicated in the specifications provided by the respective
string fuse manufacturer and the technical guidelines.
NOTE!
When installing different product versions, the lowest
minimum permitted reverse current load capacity applies.
Inverters
Inverters with or without transformers may be used.
2.4 Electrical layout
2 PLANNING
Specifications
MODULE TYPE
MOUNTING
OPTION
POSITION OF
CLAMPS* [MM]
TEST LOAD
PUSH/PULL**
[PA]
DESIGN LOAD
PUSH/PULL**
[PA]
SAFETY
FACTOR
SOLAHART300BLK
SOLAHART305BLK
SOLAHART310BLK
SOLAHART315BLK
CL1 / CL3
250 - 450
5400/4000
3600/2670
1.5
FB1 / FB2
345
IP1
-
CL1
0 - 250
450 - 550
2400/2400
1600/1600
CL2a (with
rails) /
CL2b (with-
out rails)
0 - 250
CL4
0 - 300
CL5
short side: 0 - 250
long side: 300 - 400
4000/4000
2670/2670
Ä
The below mounting options are only possible under certain conditions.
MODULE TYPE
MOUNTING
OPTION
POSITION OF
CLAMPS* [MM]
TEST LOAD
PUSH/PULL***
[PA]
DESIGN LOAD
PUSH/PULL***
[PA]
SAFETY
FACTOR
SOLAHART300BLK
SOLAHART305BLK
SOLAHART310BLK
SOLAHART315BLK
IP2
-
2400/2200
1600/1470
*
**
***
Distance between outer edge of module and middle of the clamp.
Loads according to IEC 61215-2:2016 and UL 1703.
Test procedure according to IEC 61215-2:2016 and UL 1703. Mounting
options do not fulfill the requirements of the standards.
ATTENTION
Ä
The loads in the table are related to the mechanical stability of the solar modules. The mechanical stability of the
mounting system including clamps has to be evaluated by the system supplier. The system installer is responsible
for the determination of location-specific load requirements.
Ä
Ensure, that the subconstruction does not touch the junction box (even under load). Ensure that the clamps or
insertion profiles etc. do not touch the glass (even under load).
Ä
Ensure, that the connection cables of the junction box do not run between laminate and mounting rails.
Ä
Ensure, minimum support depth of 15 mm on the back side of the module for IP1, IP2, CL2b, CL3, CL4 and CL5.
Ensure minimum support depth of 10 mm on the front side of the module for IP1 and IP2.
Ä
CL1 and CL2a with rails: Ensure that module frame is fixed directly on the rail of the substructure (no spacer allowed
between the module and substructure).
Ä
Module bend under loads. Therefore, sharp objects (e.g. screws) must not be mounted near the module backside.
Ä
Use M8 corrosion-proof screws and washers (diameter
≥
15.8 mm or
≥
0.62 in) for FB1 and FB2 mounting.
