51
Check Item Check Method
Check whether there is oil leakage on the phase bushings of the
high-voltage and low-voltage cabinets. If yes, tighten the valve.
Check whether there is oil leakage on the joint between the heat
sink of the transformer and the flange of the oil tank. If yes, tighten
the valve in time.
Check whether the real-time temperature of the oil temperature
indicator is normal. If abnormal, measure the resistance of PT1\PT2
and PT3 by multimeter. If the result is not qualified, the temperature
controller is faulty and needs to be repaired in time.
Check whether the sound of the transformer is normal during
operation.
LV cabinet
Check whether the surge protection device indicator is normal (-
green) or faulty (red).
Check whether there is condensation on the internal side panel and
top cover.
table 9-4 Maintenance (If necessary)
Check Item Check Method
Other equipment
Replace the damaged lights in time.
Replace the damaged smoke sensor and fire extinguisher in time.
Replace the temperature and humidity controller in time.
Device
maintenance
For the maintenance of various equipment inside, refer to the
related manuals.
Before performing maintenance, remove the internal protective grid. Make sure to
reassembly the grid and fasten all the screws after the maintenance work.
Make sure all bolts are securely fixed.
Repair immediately any anomalies found during routine maintenance. If there are
any doubts, contact Sungrow.
9.3 Checking and Cleaning the Filter
It is recommended to clean the filter every six months to one year. If the product works in
harsh environments, such as desert areas, the maintenance cycle should be shortened to
three months.
System Manual 9 Routine Maintenance
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