Distribution transformer performance when subjected to steep front impulses
Conference
·
OSTI ID:6325732
The experimental method and the results of subjecting arrester protected pole type distribution transformers to the combined stresses caused by the conducted steep front impulse and rated 60 Hz voltages are described. Comparisons are drawn between these results and those of similar experiments on unenergized distribution transformers. Additional comparisons are made with low voltage impulse wave distribution results previously reported. It is concluded that: (1) tank mounted direct connected arresters provide a high degree of protection to these transformers; (2) tank mounted externally gapped or crossarm mounted arresters may not provide sufficient protection; (3) internal transformer insulation system failures caused by the steep front impulse do not necessarily result in immediate catastrophic failures of the transformers. 10 refs., 6 figs.
- Research Organization:
- Oak Ridge National Lab., TN (USA)
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 6325732
- Report Number(s):
- CONF-890447-3; ON: DE89002971
- Country of Publication:
- United States
- Language:
- English
Similar Records
Distribution transformer performance when subjected to steep front impulses
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Sat Mar 31 23:00:00 EST 1990
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Related Subjects
200301* -- Power Transmission & Distribution-- AC Systems
EHV & UHV-- (-1989)
24 POWER TRANSMISSION AND DISTRIBUTION
CURRENTS
DATA
ELECTRIC CURRENTS
ELECTRIC DISCHARGES
ELECTRICAL EQUIPMENT
ELECTRICAL INSULATION
ELECTRONIC CIRCUITS
ENERGY SYSTEMS
EQUIPMENT
FLASHOVER
INFORMATION
LIGHTNING
NUMERICAL DATA
PERFORMANCE TESTING
POWER SYSTEMS
SURGES
TESTING
TRANSFORMERS
EHV & UHV-- (-1989)
24 POWER TRANSMISSION AND DISTRIBUTION
CURRENTS
DATA
ELECTRIC CURRENTS
ELECTRIC DISCHARGES
ELECTRICAL EQUIPMENT
ELECTRICAL INSULATION
ELECTRONIC CIRCUITS
ENERGY SYSTEMS
EQUIPMENT
FLASHOVER
INFORMATION
LIGHTNING
NUMERICAL DATA
PERFORMANCE TESTING
POWER SYSTEMS
SURGES
TESTING
TRANSFORMERS