Sma AUTOMATIC SWITCH BOX M-20 Manuel d'utilisateur télécharger pdf (Page 37)

SMA Solar Technology AG 5Electrical Connection

Installation Guide AS-BOX-M_L-IA-IEN110320 37

5.7 Connecting the Feed-in Meter

Connection terminals:

2. If a feed-in meter does not need to be connected to the Automatic Switch Box, bridge the

terminal strips "AS-X5/ PV Meter" and "AS-X1/ Load Meter“.

3. Insert the cable (see section 5.2).

4. Connect PE to terminal strip "AS-X5/ PV Meter". Take the labeling on the connection terminals

into account.

5. Connect N to terminal strip "AS-X5/ PV Meter". Take the labeling on the connection terminals

into account.

6. If you use the Automatic Switch Box M, connect L to terminal strip "L1" of the connection terminal

"AS-X5/ PV Meter".

7. If you use the Automatic Switch Box L, connect L1, L2 and L3 to the terminal strip

"AS-X5/ PV Meter". Take the labeling on the connection terminals into account.

Displayed graphic

As an example, only the Automatic Switch Box L will be graphically displayed in this section.

The labeling of the connection terminals as well as the procedure for connecting the

Automatic Switch Box M is identical.

Destruction of the Automatic Switch Box due to missing back-up fuse.

To limit a possible short-circuit current from the power distribution grid and to protect the cables

in the Automatic Switch Box, a fuse between feed-in meter and the Automatic Switch Box is

necessary.

• Install a line fuse between the Automatic Switch Box and the feed-in meter. Take the

nominal current, the short-circuit switching capacities and the maximum cut-off current into

account (see section 10”Technical Data”,page53).

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Sma AUTOMATIC SWITCH BOX M-20 Manuel d'utilisateur Page 37