Glaze with increased conductivity for porcelain insulators

1982 ◽  
Vol 39 (10) ◽  
pp. 506-508
Author(s):  
N. P. Leshchenko ◽  
K. A. Kovaleva
Keyword(s):  
Porcelain Insulators

Research on Discharge Characteristics of Porcelain Insulators Considering Air Humidity

2021 ◽  
Author(s):  
Tao Zheng ◽  
Xuehuan Wang ◽  
Xindang Ma ◽  
Yongfu Li ◽  
Yongfeng Wang ◽  
...  
Keyword(s):  
Air Humidity ◽  
Discharge Characteristics ◽  
Porcelain Insulators

scholarly journals Study of the Electrical Properties of Aluminate Cement Adhesives for Porcelain Insulators

Materials ◽  
2021 ◽  
Vol 14 (9) ◽  
pp. 2232
Author(s):  
Huiwen Wan ◽  
Zhangyin Hu ◽  
Gang Liu ◽  
Jiadong Xiao
Keyword(s):  
Compressive Strength ◽  
Electrical Properties ◽  
Silica Fume ◽  
Drying Time ◽  
Pore Connectivity ◽  
Cement Based Materials ◽  
Porcelain Insulators ◽  
Materials Used ◽  
The Cost ◽  
Aluminate Cement

Electrical properties are one of the essential parameters of cement-based materials used in suspension porcelain insulators. This paper studied the electrical properties of aluminate cement adhesives (ACA) containing silica fume (SF), as well as their compressive strength and porosity. The results indicated that the addition of silica fume improved the resistivity of ACA under a saturated state (relative humidity is 50%). This was mainly attributed to the decrease of the ACA’s pore connectivity due to the SF’s filling effect. However, the early compressive strength of ACA was slightly reduced by the addition of SF. Under an unsaturated state, the ACA’s resistivity without the SF gradually exceeded that with the SF at the extension of drying time. The nuclear magnetic resonance (NMR) results indicated that the addition of SF content increased the ACA’s porosity; for the tiny pores especially, (the size less than 25 nm), this increased by 3.4%. Meanwhile, the addition of SF increased the tortuosity of the ACA’s conductive channels, which could improve its resistivity. Therefore, SF is recommended to be used in cement-based adhesives on insulators to lower the cost and improve the resistivity.

Materials Based Lifetime Assessment of Porcelain Insulators

2019 ◽  
pp. 528-539
Author(s):  
Jan Schulte-Fischedick ◽  
Prashant Singh ◽  
Fabian Lehretz ◽  
Pascal Hettich ◽  
Claudia Bucharsky ◽  
...  
Keyword(s):  
Porcelain Insulators

scholarly journals Evaluation of Tanzania local ceramic raw materials for high voltage porcelain insulators production

Cerâmica ◽  
2018 ◽  
Vol 64 (372) ◽  
pp. 570-576
Author(s):  
B. Ngayakamo ◽  
S. E. Park
Keyword(s):  
High Voltage ◽  
Bending Strength ◽  
Raw Materials ◽  
Microstructural Characterization ◽  
Dielectric Strength ◽  
Pressing Method ◽  
X Ray ◽  
Mineral Phases ◽  
Porcelain Insulators ◽  
High Voltage Porcelain

Abstract This study evaluated the potential of locally sourced-ceramic raw materials in Tanzania, Pugu kaolin, Same clay, vermiculite and feldspar, for production of high voltage porcelain insulators. The chemical, mineral phases and microstructural characterization of raw materials and porcelain samples were carried out using the X-ray fluorescence, X-ray diffraction, and scanning electron microscopy techniques, respectively. The mineral phases of the fired porcelain sample identified were mullite and quartz. The porcelain bodies were fabricated using the dry pressing method by varying the composition of the selected ceramic raw materials. The physical-mechanical properties and dielectric strength were measured for each porcelain sample. The sample with the composition of 20% Pugu kaolin, 20% Same clay, 20% vermiculite and 40% feldspar was found to have the dielectric strength of 50.8 kV.mm-1, bending strength of 20 MPa and water absorption of 0.46%, which satisfies the main requisite properties for high voltage porcelain insulators.

scholarly journals Flashover Characteristics Performance Assessment under Contamination Possessions on the Surface of Porcelain Insulators

2018 ◽  
Vol 6 (1) ◽  
pp. 47-56
Author(s):  
Rahul Soni ◽  
Mihir Bhatt
Keyword(s):  
Performance Analysis ◽  
Performance Assessment ◽  
Field Application ◽  
Real Field ◽  
Dry Conditions ◽  
Porcelain Insulators ◽  
Testing Techniques

This paper presents the experimental outcomes regard to the flashover performance of pin, shackle and disc insulators under contaminated conditions. For making contaminated surface various samples are made like salt, dust, industry pollution and miscellaneous foreign particles of wet and dry conditions as per IEC testing techniques. Moreover, each insulator has been tested under above mentioned conditions. For each insulator its breakdown voltages were measured. After doing performance analysis of different insulators under contaminated condition measurement of breakdown voltages are done with incorporation of real field application of insulators and making analogy with various regions of India.

Sign in / Sign up

Export Citation Format

Share Document