ECTIVE MSP & SSP 19
4.2 Grounding
It is imperative that you comply with the locally applicable grounding
regulations. Do not use grounding connections such as bolts and screws
for module fastening to the rack. The holes provided for this purpose at
the rear of the module frame must be used for fastening the equipotential
bonding.
4.3 Wiring
Only use suitable plugs of the same type and UV-resistant solar cables for
the installation.
• When laying the cables, avoid kinking them or chafing them along
sharp objects.
• Ensure that the bending radius of the cables is sufficient (at least 8
times the cable outer diameter) and that there is sufficient distance
between the bend and the junction box (at least 5 cm).
• Do not lay cables under tensile stress; a tensile moment of 50 N (5 kg)
must not be exceeded.
• Use cables that are as short as possible to reduce inherent loss.
4.4 Testing
Before use, test the electrical components of your system.
• Check the open circuit voltage of each string using a digital multimeter.
The values must equal the sum of the nominal voltage specified for
each module.
• On each series circuit, check the short-circuit current using a
multimeter. The measured value must be 1.25 times the rated short-
circuit current of the respective module.
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