SMA SB 2500TL-21 Installation - Manual (Page 40)

Electrical Connection SMA Solar Technology AG
40 SB25-30TLST-21-IA-en-13 Installation Manual
3. Check the DC connectors for correct polarity and
connect them.
☑ The DC connectors click audibly into place.
For details on how to release the DC connectors,
see Section 8.2 "Disconnecting the Inverter from
Voltage Sources" (page 57).
4. If you do not need all DC inputs on the inverter, seal the enclosure with DC connectors and
sealing plugs:
– For unused DC connectors, push down the
clamping bracket and push the swivel nut up to
the thread.
– Insert the sealing plug into the DC connector.
– Tighten the swivel nut (torque: 2 Nm).
Sealing plugs
• Do not insert the sealing plugs directly into the DC inputs on the inverter.
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