Maintenance Work Every 6 Years; Maintenance Work Every 10 Years; Demand-Based Maintenance; All Devices - SMA MEDIUM VOLTAGE POWER STATION 500SC-JP System Manual

10 Maintenance

10.2.4 Maintenance Work Every 6 Years

Medium-voltage switchgear
Maintenance under voltage-free conditions
Task
Perform a 12 months-maintenance.
Perform a 24 months-maintenance.
Clean the external elements with a clean, dry cloth.
Check that the position indicators (OFF and ON) are aligned.
Check function of the mechanical drive by means of various electronic circuits.
Check the general condition of the electrical connections.
MV transformer
Task
Take an oil sample and have it tested.

10.2.5 Maintenance Work Every 10 Years

Medium-voltage switchgear
Maintenance under voltage-free conditions
Task
Perform a 12-months maintenance.
Perform a 24-months maintenance.
Replace the HV/HRC fuses.
Replace the voltage indicator.

10.2.6 Demand-Based Maintenance

10.2.6.1 All Devices

Task
Prior to each switching procedure of the medium-voltage switchgear, check the
level of the SF6 gas holders.
Check the MV transformer for operating noise.
Contact the SMA Service Line after each short circuit.
Prior to each use of the outlet, check the residual-current device in the station sub-
distribution.
138 MVPS22JP-SH-en-11
SMA Solar Technology AG
See
Section 10.2.2.4, page 136
Section 10.2.3.2, page 136
Documentation for the medium-
voltage switchgear
‒
See
Documentation for the MV trans-
former
See
Section 10.2.2.4, page 136
Section 10.2.3.2, page 136
Documentation for the medium-
voltage switchgear
See
Documentation for the medium-
voltage switchgear
‒
‒
‒
System Manual