SMA SUNNY TRIPOWER 20000TL High Efficiency, Руководство по эксплуатации

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6.3.3 Connecting Additional Grounding
If connection of additional grounding or equipotential bonding is required at the installation site,
you must connect additional grounding to the inverter. This prevents touch current if the grounding
conductor at the connecting terminal plate for the AC cable fails.
Cable requirement:
☐ Grounding cable cross-section: 16 mm² at maximum
Procedure:
1. Strip the grounding cable insulation.
2. Lead the clamping bracket over the grounding
cable. Arrange the grounding cable to the left.
3. Screw the clamping bracket tight using the
M6x16 cylindrical screw and the conical spring
washer (torque: 6 Nm). The teeth of the conical
spring washer must face the clamping bracket.
6.4 DC Connection
6.4.1 Requirements for the DC Connection
Requirements for the PV modules per input:
☐ All PV modules must be of the same type.
☐ The same number of series-connected PV modules must be connected to all strings.
☐ All PV modules must be aligned identically.
☐ All PV modules must have the same tilt angle.
☐ The maximum input current per string must be maintained and must not exceed the through-
fault current of the DC connectors (see Section 10 "Technical Data", page 36).
6 Electrical Connection SMA Solar Technology AG
Operating Manual STP20-25TL-BE-en-10 24