SMA SUNNY CENTRAL Maintenance manual User Manual
Page 5

SMA Solar Technology AG
Table of Contents
Maintenance Manual
SCWAR-WEN094020
5
Checking the DC main switch . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Circuit breaker and switch-disconnector . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Checking the fuses and disconnectors . . . . . . . . . . . . . . . . . . . 48
Checking the overvoltage arrester . . . . . . . . . . . . . . . . . . . . . . 49
Maintaining the GFDI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Maintaining the soft grounding. . . . . . . . . . . . . . . . . . . . . . . . . 51
Additional notes for Sunny Central 100 . . . . . . . . . . . . . 52
Checking the transformer and sinusoidal filter . . . . . . . . . . . . . 52
Checking the cable feed of the SC 100outdoor . . . . . . . . . . . 53
Additional notes for MV stations . . . . . . . . . . . . . . . . . . . 54
Checking the cable feed of the concrete substations . . . . . . . . 54
Maintaining the Sunny String-Monitor . . . . . . . . . . . . . . . 55
Maintaining the Sunny String-Monitor-Cabinet . . . . . . . . 58
Maintaining the Sunny String-Monitor SSM24-11 . . . . . 61
Maintaining the Sunny Main Box. . . . . . . . . . . . . . . . . . . 65
Contact . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66