the operated
transformer should always inspected and monitored to find the abnormal phenomenon or fault to void the severe accidant.
the projects should be checked and monitored generally include：
（1） abnormal noise,such as uneven beep or noise of discharge.
（2） Oil-level, whether there are seepage, oil spills phenomenon.
（3） oil temperature (the upper oil temperature is no more higher than 85℃).
（4） whether the casing is clean, and whether there are phenomenons of crack, damage or discharge.
（5） whether there are fever phenomenon in the joints.
（6） whether rupture membrane of the explosion stack is complete
（7） whether the gas relay has the phenomenon of oil spills and whether the inner is full of oil.
（8） whether the respirators are clear, and whether the oil-level of the respirator is normal and whether the silica gel of the respirator has been saturated by moisture absorption.
（9） whether the cooling system runs normally, especially the forced oil recycling or the air-cooled
transformers, the oil, water, temperature, pressure and flow war all needed to be checked whether meet the standard.
（10）whether the Shell grounding line is intact.
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