4 Information on Maintenance
SMA America, LLC
20
SCCP-US-WH-US_en-31
Maintenance Manual
4 Information on Maintenance
4.1 Maintenance Intervals
Maintenance under normal ambient conditions:
Preventive replacement intervals:
Shorter maintenance intervals in the event of adverse ambient conditions
The plant location and ambient conditions influence the maintenance intervals.
• If the inverter is installed in adverse ambient conditions, SMA recommends a monthly inspection in order to
determine the need for maintenance. The maintenance intervals are to be shortened depending on the
determined maintenance requirements. In particular, cleaning work and corrosion protection may be necessary
more frequently.
• Adherence to the maintenance intervals ensures trouble-free operation of the inverter (see the maintenance
report of the inverter).
Description
Interval
Maintenance
Every 24 months
AC circuit breaker
• Functional test*
• Cleaning*
• Checking the contact elements*
* See the manufacturer's maintenance manual of the AC circuit breaker
Every 24 months
Description
Interval
24 V Power Supply Units*
* Contact the SMA Service Line.
Every 10 years
24 V Buffer Modules
Every 10 years
Inverter Bridge Fan*
Every 12 years
Every 12 years
Integrated DC Switch motor actuated DC load-break
switches*
Every 15 years or 10,000 switching cycles,
whichever is sooner**
Integrated AC Disconnect GFDI / ABB High-Performance
After 100 trippings due to short circuit or after
7,000 switching cycles**
** The trippings and switching cycles are recorded as instantaneous values (see Section 5.1 "Reading the Replacement Interval Meter",
Remote Switch Unit of the GFDI*
After 7,000 switching cycles**
GFDI auxiliary signal contact*
Every 6 years
Cleaning Air Dict, Ventilation Grids and Air Inake
Regular
Surge arrester
If tripped
Key switch
In case of severe signs of wear
Label on the enclosure
If illegible, defective or not available
Summary of Contents for SC 500CP-US-10
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