SMC Networks 5000A Manuel d'utilisateur télécharger pdf (Page 33)

SMA Technologie AG Electrical Connection

Installation Guide SMC50A_60A-IEN073320 Page 33

Design Notes

Check the following points below:

Step Test

1 Do all the strings have the same number of series-connected modules?

2 How high is the maximum reverse current in a defective string at nominal

conditions?

Example: generator with 4 strings of modules at 5 A short-circuit current

The maximum reverse current is 3 x 5 A = 15 A.

3 Are the modules suitable for such a reverse current?

4 If not: Have appropriate measures been taken in order to avoid these

currents (e.g. string fuse in each string)?

5 Are the plug connectors of the modules and the inverter suitable for such a

reverse current?

6 Is the string wiring suitable for such a reverse current?

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SMC Networks 5000A Manuel d'utilisateur Page 33