15kv Window Current Transformers

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  • Extremely soft x-ray generator and its applications
    … is a glass-enclosed diode with a tungsten target and a 0.2 mm-thick beryllium window . In this experiment, the peak tube voltage was regulated from 10 to 15 kV using an auto transformer , and the peak tube current was regulated within 15 mA by the filament voltage (temperature).
  • 5000 amp 60 Hz 3-phase continuous current test of an enclosed 15 kV bus assembly
    Abstract- This paper describes the performance of a continuous current test on an enclosed 5000 amp (non-standard rating) 60 Hz AC 15 kV bus assembly. The assembly includes terminations, wall penetrations, bus support insulators, and window -type current transformers .
  • 5000 amp 60 Hz 3-phase continuous current test of an enclosed 15 kV bus assembly
    This paper describes the performance of a continuous current test on an enclosed 5000 amp (nonstandard rating) 60 Hz AC 15 kV bus assembly. The assembly includes terminations, wall penetrations, bus support insulators, and window -type current transformers .
  • Light-matter interaction in transformer oil
    We used a pulsed 300 W Xenon light source (25 mm output window , 5 degree divergence) with … Typical field strengths in the electrode gap (- 4 mm gap, 3 mm tip radius,) were 15 to 25 kV /cm resulting in a DC current ampli- tude (without light) of up to 2 nA (apparatus resolution -10 PA). Standard transformer oil, Univolt 61, and a biodegradable oil, Environtemp FR3 (natural ester fluid), were examined in …
  • Characterization of some ancient glass vessels fragments found in Xinjiang, China, using a portable energy dispersive XRF spectrometer
    … controlled by a notebook PC, a compact power unit includes the high-voltage transformer and power supply … … had already been applied successfully in chemical analysis of ancient glasses excavated from Japan, Egypt and Croatia by I. Nakai and other scholars.[1,14, 15 ] The P-XRF spectrometer … … of 40 or 15 kV , and with current of 0.5 or … … drift detector (SDD) with active area of 5 mm2 equipped with a polymer window (MOXTEK AP 3 …
  • Evaluation of sympathetic nuisance tripping involving instantaneous ground fault relays and general considerations for ground fault protection of industrial po...
    FiuURE XVI High ResistanceGrounding of a 15 kV B. Symmetrical Conductor Placement in Ground Sensor Current Transformers … three phase conductors in a symmetrical arrangement within the ground sensor current transformer window will result in …
  • Practical experiences of on-line partial discharge measurements on a variety of medium-voltage electrical equipment
    Result of a common problem found in 15 - kV -class switchgear. Pending failure is at the point where the insulated bus passes though a bus support window . Placement of switchgear sensor in the current transformer circuit.
  • Impulse fault classification in transformers by fractal analysis
    Figure 7 represents the variation of fractal dimension with the sampling intend At of the current waveforms corresponding to different faults for (a) the EMTP model of the 7 MVA transformer and (b) the analog … … the 3 MVA, 33/11 kV transformer. The procedure to estimate fractal dimension of a wave- form expressed by equation ( 15 ) is very fast … The sliding window al- gorithm [19] is applicable in this case for segmentation of the data set …
  • Mechanical strength of power transformers in service
    It is an important term in trans- former design as it affects calculations ofthe reactance and eddy- current losses in the windings as well as the mechanical forces, and it has been much studied.17 -20 Fortunately, for the present purpose, we … This almost always occurs in the window of the core, where its usual value is simply as … … windings in the window or under the Fig. 5.—Short-circuit failure of 60MVA 132 kV transformer. yokes.12 ' 15 > n Short-circuit failures in service generally show this concentration.
  • Fast connection /reconnection of the VSC to the power network
    According to the Fig. 1, the test system contains a 2-level IGBT inverter controlled by the algorithm described in Fig. 5, the distributive transformer 10/0.4 kV /kV, the sinus filter (L = 2.5 mH, C= 15 uF), 3-phase breaker … As the result of simulation, the voltage and current waveform measured on the low voltage side of … The x-axes in the Fig. 8 (a,b), represent the sample number of the examined window .