Additional Earthing Of The Enclosure; Connecting The Pv Array (Dc); Conditions For The Dc Connection - SMA SUNNY BOY 2500TL Single Tracker Installation Manual

Electrical Connection
6.3.3 Additional Earthing of the Enclosure
If required in the installation country, you can use the earth terminal on the enclosure to connect a
second protective conductor or as equipotential bonding.
1. Undo screw (A) half way. Use an Allen key (width
across flats 4) for this.
2. Insert the stripped earthing cable (D) under the
clamping bracket (C) (maximum conductor
cross-section 10 mm²).
3. Fasten terminal (C):
– Attach conical spring washer on the screw.
Here, the grooved side of the conical spring
washer must point to the screw head.
– Tighten the screw (torque: 6 Nm). Use an Allen
key (width across flats 4) for this.
☑ The teeth of the conical spring washer are
pushed into the clamping bracket. The
conductive earthing cable is conductively
connected to the enclosure.
6.4 Connecting the PV Array (DC)
6.4.1 Conditions for the DC connection
Use of Y adaptors
Y adaptors must not be visible or freely accessible within close proximity of the inverter.
• The DC circuit must not be interrupted by Y adaptors.
• Observe the procedure for disconnecting the inverter (see
Section 8.2 "Disconnecting the Inverter from Voltage Sources" (page 62)).
• Requirements for
– Same type
– Same quantity of PV modules connected in series
– Identical alignment
– Identical tilt
• The connection cables of the PV modules must be equipped with connectors. The DC connectors
for the DC connection are included in the delivery.
• The following limiting values at the DC input of the inverter must not be exceeded:
Maximum input voltage
38 SB25_30TLST_21-IA-IEN121110
he PV modules of the connected strings:
t
750 V (DC)
SMA Solar Technology AG
Maximum input current
15.0 A (DC)
Installation Manual