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1 exchanging the gfdi fuse within the sunny boy, Exchanging the gfdi fuse within the sunny boy – SMA SB 5000-US User Manual

Page 86

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Maintenance

SMA America, LLC

86

SB50US-80US-IA-en-37

Installation Manual

10.5.1 Exchanging the GFDI Fuse within the Sunny Boy

1. Disconnect the Sunny Boy on the AC and DC sides.
2. Wait 5 minutes until the residual voltage has been drained and the fans are no longer turning.
1. Open the Sunny Boy as described in section 6.3 ”Opening the Sunny Boy” (page 40).
2. Replace the fuse (A).

For the correct position of the fuse, observe section "DC Input Grounding" on page 48.

3. Completely insert the fuse into the terminal.
4. Close the Sunny Boy as described in section 6.8 ”Closing the Sunny Boy” (page 56).
5. Switch the AC and DC disconnect switches back on.

10.5.2 Exchanging PV String Fuses within the DC disconnect

1. Disconnect the Sunny Boy on the AC and DC sides.
2. Wait 5 minutes until the residual voltage has been drained.
3. Open the DC disconnect as described in section 6.4 ”Opening the DC Disconnect” (page 41).
4. Replace the fuse (1, 2, 3, or 4).

5. Close the DC disconnect as described in section 6.9 ”Closing the DC Disconnect” (page 57).
6. Switch the AC and DC disconnect switches back on.

A

1

3

2

4

GROUNDING

ELECTRODE

CONDUCTOR

COMBINED

1

2

3

4

UNGROUNDED

GROUNDED

L1 L2 N

1

3

2

4

COMBINED

1

2

3

4

UNGROUNDED

GROUNDED

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