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HVDC TRANSFORMER BUSHINGS
PHI 530.1425.2500
PHI 265.850.1500
Kepco project
IS 2664 GB
Page
70
of
70
Appendix 8 – Gas filling check list
ppm by weight from gas certificates
ppm by weight from measurements
Bottle
S.N.
Bushing S.N.
SF6 content
by weight
Air
CF4
H2O
Mineral oil
Total acidity
expressed in
HF
Hydrolizable
fluorides in
terms
of HF
Dew point at
amospheric
pressure
SF6 content
by weight
HF
SO2
Reference data
≥
99.9%
≤
≤
≤
≤
500 ppmw
≤
≤
≤
≤
500 ppmw
≤
≤
≤
≤
15 ppmw
≤
≤
≤
≤
10 ppmw
≤
≤
≤
≤
0.3 ppmw
≤
≤
≤
≤
1 ppmw
≤
≤
≤
≤
-40°C
≥
99.9%
≤
≤
≤
≤
1 ppmw
≤
≤
≤
≤
0 ppmw
Date:
Prepared by:
Controlled by: