Results 261 to 270 of about 10,590,427 (302)

A Short-Circuit Testing Laboratory in an Educational Institution

IEEE Transactions on Education, 1964
The establishment of a short-circuit testing laboratory in an educational institution is quite an innovation, particularly in an area of the world where the conventional high power switchgear testing laboratory is non-existent. Affording postgraduate training and research in arc phenomena and the scientific development of arc extinction devices, this ...
P. O. Langguth, M. A. Pandit
openaire   +1 more source

A-C and D-C short-circuit tests on aircraft cable

Electrical Engineering, 1944
Higher-voltage d-c and 400-cycle a-c electric systems are being developed for large aircraft with increased electrical load in order to obtain lower conductor weights than would be required with the present 28.5-volt system. In view of the apparent freedom from sustained faults in low-voltage d-c systems despite damage from gunfire, the use of ...
J. C. Cunningham, W. M. Davidson
openaire   +1 more source

Optimization of short-circuit tests based on finite element analysis

2015 IEEE International Conference on Industrial Technology (ICIT), 2015
One of the main problems that arises when performing short-circuit tests to large loops involving substation connectors is the inductive component of the loop impedance. Transformers used to perform short-circuit tests have a secondary winding with very few turns, producing a very low output voltage.
Capelli, Francesca, Riba Ruiz, Jordi-Roger, González, David   +2 more
openaire   +2 more sources

Short-circuit tests on current-limiting fuses: modelling of the test circuit

IEE Proceedings C Generation, Transmission and Distribution, 1993
In the standard procedures for high-power short-circuit testing of current-limiting fuses, the test circuit is conventionally characterised by the RMS test voltage, prospective current, frequency, closing angle, and power factor. From these parameters a constant RL equivalent circuit can be derived, which has been widely used in the modelling of fuse ...
R. Wilkins, T. Saengsuwan, L. O'Shields
openaire   +1 more source

Equivalent load test for induction machines-the forward short circuit test

IEEE Transactions on Energy Conversion, 1999
Often full load testing of induction machines with outputs greater than 1 MW present difficulties when attempting to verify the rated performance, especially the temperature rise. This is because of limitations imposed by the manufacturer's power supplies and load equipment.
D.H. Plevin, C.N. Glew, J.H. Dymond
openaire   +1 more source

An On-Line Identification Method for Short-Circuit Impedance of Transformer Winding Based on Sudden Short Circuit Test

2019
This paper comes up with an online identification method for short-circuit impedance of transformer winding based on sudden short circuit test, which has realized the accurate calculation of parameters of short circuit impedance by collecting voltage and current from the sudden short circuit test, establishes related simulation model, and proves the ...
Yan Wu, Lingyun Gu, Xue Zhang, Jinyu Wang   +3 more
openaire   +1 more source

Matching the IEEE Test Feeder short circuit results

PES T&D 2012, 2012
The IEEE Test Feeders provide a benchmark for the power distribution systems analysis community. This panel summary will provide a discussion of experiences matching the results published by Kersting and Shirek in this panel. [1] Benchmarking the short circuit currents for the Test Feeders is important to users of the Test Feeders for determining ...
R. F. Arritt, R. C. Dugan
openaire   +1 more source

Repetitive Short-Circuit Tests on SiC VMOS Devices

Materials Science Forum, 2016
SiC MOSFET are now commercially available and show promising performances when considering static losses, commutations and long term reliability. The devices may face short-circuit conditions and knowing their capibility in terms of critical time and repetitive fault is mandatory before integration in commercial systems.
Maxime Berthou, Pascal Bevilacqua, Jean Baptiste Fonder, Dominique Tournier   +3 more
openaire   +1 more source

The short-circuit rating and testing of current-limiting reactors

Journal of the Institution of Electrical Engineers - Part II: Power Engineering, 1942
This paper deals with the scope of reactor short-circuit testing, and the type testing of the various forms of reactor construction. The principles of current-limiting reactor operation are briefly described, and proposals for the short-circuit rating of reactors are given.
J.G. Wellings, R.V. Wheeler
openaire   +1 more source

Short- circuit tests of circuit breakers

2015
This paper deals with short-circuit tests of low voltage electrical devices. In the first part of this paper, there are described basic types of short- circuit tests and their principles. Direct and indirect (synthetic) tests with more details are described in the second part. Each test and principles are explained separately.
openaire   +1 more source