Esquema De Proceso - MR OF 100 Instrucciones De Servicio

11.7 Esquema de proceso

H2O > 30 ppm
Take transformer out of service
B
H2O > 30 ppm
Take transformer out of service
D
Fill new insulating fluid Flow chart for commissioning the oil filter unit, changing the filter or
Water content (H2O) < 12 ppm
after on-load tap-changer maintenance
Dielectric strength UD > 60 kV/2.5 mm
The limit values for dielectric strength are listed in the operating
A
instructions of the associated on-load tap-changer and must be
observed.
Insert new combined filter cartridge
Switch on oil filter unit
Switch off oil filter unit after
1 hour of operation
Analyze insulating fluid after
H2O > 30 ppm
another 30 min
H2O < 30 ppm
Commission the transformer
10 ppm < H2O < 30 ppm
Analyze insulating fluid after 24 h
H2O < 10 ppm C
Allow transformer to run
20 ppm < H2O < 30 ppm
Analyze insulating fluid regularly
in accordance with operating instructions.
H2O < 20 ppm C
Let the oil filter unit run for 24 h,
then analyze the insulating fluid again
H2O < 30 ppm
Let the oil filter unit run for 48 h,
B
then analyze the insulating fluid again
H2O < 10 ppm
Let the oil filter unit run for 48 h,
D
then analyze the insulating fluid again
H2O < 20 ppm
H2O > 30 ppm
A
H2O > 10 ppm
A
H2O > 20 ppm
A