SMA SUNNY CENTRAL Maintenance manual User Manual

Page 5

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SMA Solar Technology AG

Table of Contents

Maintenance Manual

SCWAR-WEN094020

5

6.3

Checking the DC main switch . . . . . . . . . . . . . . . . . . . . . . . . . . 47

6.3.1

Circuit breaker and switch-disconnector . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

6.4

Checking the fuses and disconnectors . . . . . . . . . . . . . . . . . . . 48

6.5

Checking the overvoltage arrester . . . . . . . . . . . . . . . . . . . . . . 49

6.5.1

Checking the Dehn Guard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

6.5.2

Checking the Blitzductor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

6.6

Maintaining the GFDI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

6.6.1

Replacing the GFDI. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

6.7

Maintaining the soft grounding. . . . . . . . . . . . . . . . . . . . . . . . . 51

7

Additional notes for Sunny Central 100 . . . . . . . . . . . . . 52

7.1

Checking the transformer and sinusoidal filter . . . . . . . . . . . . . 52

7.2

Checking the cable feed of the SC 100outdoor . . . . . . . . . . . 53

8

Additional notes for MV stations . . . . . . . . . . . . . . . . . . . 54

8.1

Checking the cable feed of the concrete substations . . . . . . . . 54

9

Maintaining the Sunny String-Monitor . . . . . . . . . . . . . . . 55

10

Maintaining the Sunny String-Monitor-Cabinet . . . . . . . . 58

11

Maintaining the Sunny String-Monitor SSM24-11 . . . . . 61

12

Maintaining the Sunny Main Box. . . . . . . . . . . . . . . . . . . 65

13

Contact . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

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