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Influence of a supply voltage value on the UV light generated by PD on HV cap insulators – a comparative analysis

Urbaniec I., Frącz P.

Measurement Automation Monitoring

2015

Vol. 61, No. 10

470--474

The paper presents results of research works whose aim was to determine and indicate characteristics of optical signals emitted by corona discharges occurring in the vicinity of two types of high-voltage (HV) cap insulators. The experimental studies were performed under laboratory conditions using an ultraviolet (UV) camera. Two types of cap insulators were analyzed: one made of glass and the second one made of porcelain. For both considered insulating devices, the influence of supply voltage on the intensity of optical radiation was determined. The obtained results were analyzed and compared. Based on the results, it was stated that both cap insulators indicated similar characteristics but the most significant difference lied in the existence of the punch-through on the glass cap.

Ukrainian SPT-20 Hall effect thruster: analysis of the plume by optical emission spectroscopy

Pagnon B., Pellerin S., Dudeck M., Loyan A. V., Maksymenko T. A., Koshelev N. N.

Journal of Technical Physics

2008

Vol. 49, no 2

129-142

The erosion of the ceramics made of Al2O3 of the SPT20 Hall effect thruster manufactured by the National Aerospace University "KhAI", has been studied by an optical method. The ratio of Al I, Xe I, Xe II emission lines was analysed using actinometry and coronal assumptions. The erosion rate of the ceramics has been evaluated for different operating conditions for the thrusters.