4 Wiring; Preparation Before Wiring (Models With Fuses) - Delta RPI Series Operation And Installation Manual

Wiring
4 Wiring
- Whenever a PV array is exposed to sunlight, a shock hazard may exist due to
output wires or exposed terminals. To reduce the risk of shock during installation,
cover the array with an opaque (dark) material and ensure that the Disconnect
Device in the inverter is set to OFF before commencing any wiring.

4.1 Preparation Before Wiring (Models with Fuses)

• M50A has 15A DC fuse in each Positive and Negative DC connector, the
maximum current of each string should not exceed 10A.
• Parallel connection at external DC distribution box is not recommended due
to the limits of DC fuse. Please refer to Figure 4-1 for the detail wiring illustrations.
• It must to keep DC and AC power off when disconnected the DC connector
even if turn off the manual switch that in the button cover.
• Different DC connections type need different settings of insulation detection.
Please refer to 5.2.7 Install Settings for further information.
- There is no accessory such as a transformer along with our product and
therefore the product has no galvanic isolation. Please do not connect grounded
Photovoltaic modules to the product. If you connect grounded Photovoltaic
modules to the product, the error message INSULATION (E34) shows up.
- It is prohibited to connect the L1, L2, L3 and N to the ground.
WARNING：SHOCK HAZARD!
ATTENTION : NO GALVANIC ISOLATION
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