Omicron CP TD1 - Transformer Diagnosis

CP TD1 Reference Manual V 1.44
146
Source:
Schurman, D.: "Testing and maintenance of high voltage bushings",
Western Area Power administration, Golden (Colorado), 1999
12.9 Transformer Diagnosis
Practical experience using simple methods like winding resistance
measurement, dynamic tap changer testing, ratio, leakage reactance,
capacitance and dissipation factor measurement.
By Michael Krüger, OMICRON electronics GmbH Austria
Lapp:
Paper Oil Condenser type;
Totally Enclosed, 23-69kV
Paper Resin Condenser
Core
Paper Epoxy hard core
type; No Lower Porcelain
POC & PA
PRC & PRC-A
ERC
0.5
0.8
0.8
1.5
1.5
1.5
Manufacturer:
Description
Bushing
Type or Class
Power Factor Limits
(% at 20°C)
Typical Doubtful or
questionable