filmov
tv
Transformer Oil and Winding Temperature Rise Test | universal clab
Показать описание
Temperature rise test of Transformer is included in type test of transformer. In this test we check whether the temperature rising limit of transformer winding and oil as per specification or not.
Temperature Rise Test for Top Oil of Transformer
First the LV winding of the transformer is short circuited.
Then one thermometer is placed in a pocket in transformer top cover. Other two thermometers are placed at the inlet and outlet of the cooler bank respectively.
The voltage of such value is applied to the HV winding that power input is equal to no load losses plus load losses corrected to a reference temperature of 75oC.
The total losses are measured by three wattmeters method.
During the test, hourly readings of top oil temperature are taken from the thermometer already placed in the pocket of top cover.
Temperature Rise Test for Top Oil of Transformer
First the LV winding of the transformer is short circuited.
Then one thermometer is placed in a pocket in transformer top cover. Other two thermometers are placed at the inlet and outlet of the cooler bank respectively.
The voltage of such value is applied to the HV winding that power input is equal to no load losses plus load losses corrected to a reference temperature of 75oC.
The total losses are measured by three wattmeters method.
During the test, hourly readings of top oil temperature are taken from the thermometer already placed in the pocket of top cover.
0:12:18
0:03:29
0:00:23
0:06:30
0:01:46
0:05:19
0:00:05
0:04:32
0:00:21
0:09:02
0:00:57
0:05:34
0:09:33
0:02:25
0:02:00
0:08:13
0:00:41
0:04:02
0:04:48
0:00:16
0:06:13
0:00:27
0:00:12
0:04:02