INSTALLATION, USE AND
MAINTENANCE
SUNWAY STRING BOX
LT 1500V 24 INPUTS
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General box cleaning.
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Check the water-tightness of the casing and for any signs of damage.
•
Check that the front cover, the cable-glands, the tubing joints and each watertight device is correctly
positioned and consequently that IP65 protection is guaranteed.
•
Check that no wires, clamps or anything else has inadvertently been left inside the string box.
8.1.2. Checking the Connector State (if present)
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Check the state of the quick-fit PV connectors.
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Check that connectors are firmly inserted.
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Close off all the unused connectors (ask Enertronica Santerno SpA CUSTOMER SERVICE).
8.1.3. Checking the Cable Glands State
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Check the state of the cable glands.
•
Check that cable glands are securely tightened around the cable.
•
Close off all the unused cable glands (ask Enertronica Santerno SpA CUSTOMER SERVICE).
8.1.4. Check Tubing State
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Check the state of the cable tubing and make sure that it is properly fastened to the cable gland.
8.1.5. Checking the Fuses
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Routine maintenance entails checking the continuity of the fuses installed (to remove the fuses, see
section 0).
8.1.6. Checking the SPDs
•
Inspect the status of the SPDs (Surge Protective Devices) by checking the status of the button/slot on
the discharger.
The exact position of the SPDs can be seen on the Electrical and mechanical schematic.
Figure 17: Example of a typical Surge Protective Device (for reference only)
Button/slot status
SPD Status
Button/slot with green indicator visible
SPD in good conditions
Button/slot with red indicator visible
Faulty SPD
Please refer to Table 15.
8.1.7. Check Cable Tightening
In order to guarantee correct tightness of the electrical contacts, periodical checking of the tightening torques
is to be carried out over the equ
ipment’s life cycle.
•
Pay particular attention to any colour variations or anomalies affecting the terminals and bars. Replace
any damaged connections or corroded contact elements.
•
Check the tightening of all the terminal clamps for connecting the power wiring and tighten if necessary.
The tightening torques can be found in section 11.6.
