MODULAR SUNWAY TG
TE OD
INSTALLATION GUIDE
104/
139
Rev. 03
– 01/06//2018
Figure 68: Surge Protective Device
Button/slot Status
SPD Status
Button/slot with green indicator visible
SPD ready for use
Button/slot with red indicator visible
SPD faulty
Please refer to Table 53.
10.12. Calibration of environmental sensors
The MODULAR SUNWAY TG TE OD inverters have special calibration parameters for each channel relative
to the environmental measures. Please refer to the Programming Guide.
10.13. Checking the tightening torque
The MODULAR SUNWAY TG TE OD inverters have special Belleville springs in all the internal tightening
points for the copper bars and power cables. Usually no maintenance on these points is required.
However, for all tightening works carried out in the field, in order to guarantee correct tightness of the
electrical contacts, periodical checking of the tightening torques is to be carried out over the equipment’s
life cycle.
•
Check the tightness of all the terminal clamps for connecting the power wiring and tighten if
necessary.
•
Pay particular attention to any colour variations or anomalies concerning the isolation and the
terminals.
•
Please refer to section 1.6, section
Error! Reference source not found.
and to the Electrical and M
echanical Diagram of the inverter.
10.14. Checking the status switches for DC inputs fuses
In order to guarantee correct signalling in the event of fuse blowing suitably frequent checks must be carried
out during the equipment's operating life to make sure signalling microswitches are operating correctly.
•
Make sure all the upstream String Box disconnect switches are open, this ensures no voltage is
applied to the fuses. Being as all the fuses are parallel connected downstream, if just one string box
is powered the same voltage is present in all the fuses.
•
STOP the inverter.
