SMA Sunny Boy SB 2500, Руководство по установке

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Installation SMA Technologie AG
Page 30 SB25_30-11:SE0307 Installation Guide
6.2.2 PV String (DC) Connection
To connect up the input, follow these steps:
1.
Make sure the PV generator connectors have
the right polarity and do not exceed the
maximum string voltage of 600 V (DC). See
also section 5.2 "PV Generator Requirements"
(Page 15).
2. Taking one DC plug connector at a time,
measure the direct current voltage between one
DC plug connector of a string and ground
potential.
3. If the measured voltages are constant and their
total is roughly the same as the open circuit
voltage of the string, then there is a ground fault
in this string. Its approximate location can be
deduced from the relationships between the
voltages.
4. Repeat points 2 and 3 for each string.
5. Connect up the faultless PV generator strings to
the inverter.
6. Close the unused DC input sockets with the caps
included in the delivery.
Warning!
Dangerously high voltages may be present. Danger of death!
Warning!
Do not connect strings to the Sunny Boy that contain a ground fault until
you have fixed the ground fault in the PV generator!