-22-
Group 41
2194*1034 & 2205*1032
390
540
Group 43
2194*1034 & 2205*1032
390
540
Table 7: Mechanical dimensions when modules installed at long side with Clamp fitting method
According to IEC 61215 for a maximum positive design loading of below 3600Pa, and negative design
loading 1600Pa, with 1.5 times safety factor.
3. Wiring and Connection
a) Before this procedure, please read the operation instructions of the PV system carefully. Make wiring
by Multi-connecting cables between the PV modules in series or parallel connection, which is
determined by user’s configuration requirement for system power, current and voltage.
b) PV modules connected in series should have similar current, and modules must not be connected
together to create a voltage higher than the permitted system voltage. The maximum number of
modules in series depends on system design, the type of inverter used and environmental conditions.
c) The maximum fuse rating value in an array string can be found on the product label or in the product
datasheet. The fuse rating value is also corresponding to the maximum reverse current that a module
can withstand, i.e. when one string is in shade then the other parallel strings of modules will be loaded
by the shaded string and the current will pass through to create a current circuit. Based on the
maximum series fuse rating of module and local electrical codes and standards, make sure the
modules strings in parallel are protected with the appropriate in-line string fusing.
d) Open the combiner box of the control system and connect the conductor from the PV arrays to the
combiner box in accordance with the design and local codes and standards. The cross-sectional area
and cable connector capacity must satisfy the maximum short-circuit of the PV system (for a single
component, we recommended that the cross-sectional area of cables be 4mm
2
and the rated current
of connectors be more than 10A), otherwise cables and connectors will become overheating for large
current. Please pay attention to the temperature limit of cables is 85
℃
.
e) All module frames and mounting racks must be properly grounded in accordance with local and
national electrical codes. Attach the equipment grounding conductor to the module frame using the
hole and hardware provided. Note that a stainless steel star washer is used between the ground wire
and module frame (see Figure 10 below).This washer is used to avoid corrosion due to dissimilar
metals. Tighten the screw securely.
