SMA SUNNY BOY 1300TL, Руководство по установке

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10 Troubleshooting SMA Solar Technology AG
56 SB13_21TL-IA-en-65 Installation Manual
Procedure:
Check the function of each varistor according to the following procedure.
1. Disconnect the inverter from all voltage sources (see Section 8).
2. Remove all screws from the enclosure lid and pull the enclosure lid evenly forward and off.
3. Remove the protective conductor (PE) connection from the bottom of the enclosure lid.
4. Use a measuring device to measure whether there
is a conductive connection between the upper and
the middle connection wire.
If there is no conductive connection, the varistor is
defective. SMA Solar Technology AG recommends
replacing all varistors immediately.
– Order new varistors and insertion tools
(see Section 13 "Accessories", page 65).
– If new varistors are available, replace all
varistors (see Section 10.5.3).
If a conductive connection is present, contact the SMA Service Line.
Destruction of the inverter due to overvoltage
If varistors are missing, the inverter is no longer protected against overvoltage.
• Do not operate the inverter without varistors in plants with a high risk of overvoltages.
• Do not recommission the inverter until the defective varistors have been replaced.