20
4.4 System Grounding (Transformerless or Positive)
PM
PM
PM
PM096B00
096B00
096B00
096B00
Comply with the local regulations for earthing the modules and the PV array.
Grounding of the module frame can be achieved through use of clamps that penetrate the
anodization in conjunction with grounding of the mounting system or through direct
grounding of the frames by attaching a copper wire to a grounding hole of each module.
4.5 Limitation in Connection
IEC
IEC
IEC
IEC
The IEC 61730 certificate of these modules guarantees their insulation up to a DC voltage of
The IEC 61730 certificate of these modules guarantees their insulation up to a DC voltage of
The IEC 61730 certificate of these modules guarantees their insulation up to a DC voltage of
The IEC 61730 certificate of these modules guarantees their insulation up to a DC voltage of
1000 V. (IEC
1000 V. (IEC
1000 V. (IEC
1000 V. (IEC 61730
61730
61730
61730 Standard).
Standard).
Standard).
Standard).
ET
ET
ET
ETL
LL
L
The UL 1703 certificate of these modules guarantees their insulation up to a DC voltage of
The UL 1703 certificate of these modules guarantees their insulation up to a DC voltage of
The UL 1703 certificate of these modules guarantees their insulation up to a DC voltage of
The UL 1703 certificate of these modules guarantees their insulation up to a DC voltage of
1000
1000
1000
1000 V. (UL
V. (UL
V. (UL
V. (UL 1703
1703
1703
1703 Standard).
Standard).
Standard).
Standard).
Both standards apply to all module series described in this manual, however, a cable with a
suitable cross section must be used for conducting the sum of the currents as generated by
the modules. A series protection fuse of 15A is recommended for each string when module
strings are wired in parallel.
BenQ Solar recommends the PV conductor, which cross section is 4 mm
2
. External
connection boxes can be used to enable greater cable cross section area for long distance
transmission.
The modules are qualified for the application class A: Hazardous voltage (IEC 61730: higher
than 50V; EN 61730: higher than 120V), hazardous power applications (higher than 240W)
where general contact access is anticipated.
Recommended maximum series/parallel module configurations for 1000V inverter.
Maximum series = 1000V / Product Voc / 1.25 (safety factor)
Example : The Voc of PM200M00_200 is 30.4V,then the maximum
series/parallel module
configurations for 1000V inverter is 26.
Formula
1000V / 30.4V / 1.25 = 26
