SMA MEDIUM VOLTAGE POWER STATION 500SC-JP System Manual page 8

Table of Contents
10.2.2.4 Medium-Voltage Switchgear........................................................................................................................... 136
10.2.2.5 Station Subdistribution..................................................................................................................................... 136
10.2.3 Maintenance Work Every 24 Months ............................................................................................................136
10.2.3.1 Station Subdistribution..................................................................................................................................... 136
10.2.3.2 Medium-Voltage Switchgear........................................................................................................................... 136
10.2.3.3 Low-Voltage Meter (GSE) ............................................................................................................................... 136
10.2.3.4 Sunny Central................................................................................................................................................... 137
10.2.4 Maintenance Work Every 6 Years..................................................................................................................138
10.2.5 Maintenance Work Every 10 Years ...............................................................................................................138
10.2.6 Demand-Based Maintenance..........................................................................................................................138
10.2.6.1 All Devices........................................................................................................................................................ 138
10.2.6.2 Oil Tray............................................................................................................................................................. 139
10.3 Repair Schedule and Spare Parts....................................................................................................................139
10.3.1 Information on Repair Work............................................................................................................................139
10.3.2 Demand-Based Repairs....................................................................................................................................139
10.3.3 Repairs every 5 Years......................................................................................................................................139
10.3.4 Repairs every 10 Years ...................................................................................................................................140
10.3.5 Repairs every 13 Years ...................................................................................................................................140
10.4 General Maintenance Work ...........................................................................................................................140
10.4.1 Performing the Visual Inspection .....................................................................................................................140
10.4.2 Cleaning the Interior ........................................................................................................................................141
10.4.3 Checking the Seals...........................................................................................................................................141
10.4.4 Checking the Latches, Door Stops and Hinges ..............................................................................................142
10.4.5 Checking the Inverter Surface .........................................................................................................................143
10.5 Maintenance Work on the Inverter .................................................................................................................144
10.5.1 Analyzing the Temperature Indicators ............................................................................................................144
10.5.2 Cleaning the Air Duct and Ventilation Grids ..................................................................................................146
10.5.3 Cleaning the Ventilation Plate .........................................................................................................................146
10.5.4 Checking the Fuses/Disconnection Blades.....................................................................................................147
10.5.5 Checking the Bolted Connections of the Power Cabling...............................................................................147
10.5.6 Checking the Surge Arresters ..........................................................................................................................148
10.5.7 Checking the Fans............................................................................................................................................149
10.5.8 Checking the Labels .........................................................................................................................................150
10.5.9 Checking the Heating Elements and Hygrostat..............................................................................................152
10.5.10 Checking the Function of the UPS ...................................................................................................................153
10.5.11 Checking the AC Disconnection Unit..............................................................................................................154
10.5.12 Checking the DC switchgear...........................................................................................................................156
11 Disposal .........................................................................................................................................158
12 Periodic Actions.............................................................................................................................159
12.1 Opening and Closing the Doors of the Station Container.............................................................................159
12.2 Setting up the Service Platform at the Medium-Voltage Switchgear Compartment .....................................162
12.3 Mounting and Disassembly Work...................................................................................................................163
12.3.1 Mounting and Disassembly Work in the Inverter...........................................................................................163
12.3.1.1 Disassembling and Mounting the Protective Covers ..................................................................................... 163
12.3.1.2 Disassembling and Mounting the Panels ....................................................................................................... 164
12.3.1.3 Disassembling and Mounting the Ventilation Grids ...................................................................................... 165
12.3.2 Mounting and Disassembly Work in the Medium-Voltage Switchgear........................................................166
12.3.2.1 Disassembling and Mounting the Kick Plates ................................................................................................ 166
12.4 Cable Entry .......................................................................................................................................................167
12.4.1 Inserting the Cables through the Base Plates .................................................................................................167
8 MVPS22JP-SH-en-11
SMA Solar Technology AG
System Manual