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MODULAR SUNWAY TG
TE OD
INSTALLATION GUIDE
52/
139
Rev. 03
– 01/06//2018
DANGER
Before removing the grilles and connecting the inverter to the grid, make sure that no
voltage is present in all power supply sources, such as PV field, grid and auxiliary power
supply source. This prevents voltage from being applied to the inverter terminals when
installing the equipment.
DANGER
After turning off the inverter, wait at least 10 minutes before carrying out any connection
modifications, in order to give the DC-link capacitors time to discharge.
6.3.2. DC cable connection
Each DC module is provided with N.8 inputs that are fuse-protected. The cables coming from the PV field,
typically the string boxes (combiner boxes), are to be connected directly to the fuse-holder terminals. For
the technical data concerning the number of cables to be connected, the maximum allowable cross-section
and cable lug type, please refer to section 12.7.2.
Cable entry is at the bottom of the DC section (Figure 26). Do the following:
1. Insert the cable into the cable gland
2. Strip the cable.
3. Crimp the lug.
4. Clean the contact surface with a clean cloth and ethanol-based cleanser.
5. Do not touch the contact surface once cleaned.
6. Use the nut and bolt supplied to fasten the lug by applying the required torque.
Do the same for all the cables to be connected. Plug the unused cable lugs.
Figure 26: DC power cable inlet
DANGER