PURPOSE:To test easily short circuit troubles on account of layer short-circuiting or case earthing in a trasformer by applying voltage to a tested transformer momentarily, integrating wave forms which appear on its terminals owing to the voltage application and displaying the integrated value. ...
Short-circuit stresses in transformer windings, demands made on short-circuit strength methods of testing short-circuit strength, equipment required for testing short-circuit withstand capability, tested transformers, and test preparations are discussed. A dynamic short-circuit test and the verification of...
摘要: Some theoretical methods to research short-circuit strength of transformer windings at home and abroad are sum ma rized.Several methods to enhance short-circuit strength of windings are in tro duced.This provides certain references for further research on the problems.关键词:...
Short‐circuit performance of a stretched transformer winding with regard to its actual mechanical characteristics Pewca “Short-circuit performance of a stretched transformer winding with regard to its actual mechanical characteristics,” European Transactions on Ele c ... M Kozlowski,W Pewca - 《...
MATLAB/Simulink model used for simulation of the determination of parameters of three phase transformer by performing short circuit test. 팔로우 0.0 (0) 다운로드 수: 119 업데이트 날짜:2023/7/18 라이선스 보기 ...
MA Jing,WANG Zeng-ping,XU Yan.A New Method to Identify Inrush Current and Short Circuit Current of Transformer Based on Correlation Function[J].Power ... 马静,王增平,徐岩 - 《电网技术》 被引量: 73发表: 2005年 A correlation based method for discrimination between inrush and short circuit ...
A nonlinear-transient field-circuit coupled finite element model is used to simulate the split-winding transformer. A 70-MVA, three-phase, 220/6.9/6.9-kV split-winding transformer is modeled under preset and postset short-circuit test conditions. Under the preset condition, the transformer is ...
Variations in the input-circuit inductance—namely, equivalent inductance—are usually measured in the process of single-phase testing of three-phase transformers for short-circuit stability using equivalent circuits for damage identification. The problem of recalculation of equivalent inductance to short-ci...
Transformer LV Short-circuit Impedance Tester applies to LV load impedance test during delivery, overhaul, trial test and handover test of power transformers (single phase or three-phase). It tests the short-circuit impedance (%) of power voltage on site and compares it with the value ...
The Transformer short circuit impedance tester is suitable for low voltage impedance tests of power transformers (single phase or three phase) factory, handover, pre-test and overhaul processes, and also a rapid test instrument to check whether the winding deformation exists in transformer. K...