SMA External Supply Voltage 230 V - Manual (Page 137)

Procedure:
1. Disconnect the inverter on the DC side (see inverter manual).
2. Disconnect the SMA String-Monitor (see SMA String-Monitor manual).
3. Disassemble the lower protective cover of the SMA String-Monitor (see SMA String-Monitor
manual).
4. Push the connectors of the power supply assembly onto the connectors of the electronic
assembly in the SMA String-Monitor.
5. Screw the spacer bolts supplied in the scope of delivery through the holes of the power supply
assembly onto the mounting pins. As a result, the power supply assembly is fused.
6. Connect the cables for the supply voltage (섹션 참조 섹션 참조 4.4.2, 페이지의 137).
4.4.2 Connecting the Cables for the Supply Voltage
Requirements:
☐ The SMA String-Monitor must be disconnected (see SMA String-Monitor manual).
☐ The inverter must be disconnected on the DC side (see inverter manual).
☐ The power supply assembly must be installed (섹션 참조 섹션 참조 4.4.1, 페이지의 136).
Cable requirements:
☐ Conductor cross-section: 1.5 mm 2 to 2.5 mm 2
☐ Recommended cable type: NYY-O
☐ If large distances and small cable cross-sections are involved, take the voltage drop into
account.
Procedure:
1. Remove the sealing plugs from the corresponding enclosure openings (섹션 참조 섹션 참
조 4.2, 페이지의 134).
2. Lead the cables for the supply voltages through the enclosure openings into the SMA String-
Monitor.
3. Dismantle the cables by 80 mm.
4. Strip off the insulation of each conductor by 12 mm. Make sure that no pieces of cable are
dropped into the SMA String-Monitor.
5. Connect the cable for incoming supply voltage
to terminals X22:2,3. To do this, insert the cable
into the terminal and close the locking lever of
the terminal.
4 설치 SMA Solar Technology AG
Installation Manual 137 SSMU-AUX-PB/OVP-IA-xx-10
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