Method for Determining the Insulation in Asymmetric Networks with Voltage up to 1000 V in Mining Enterprises

Utegulov, Bolatbek; Utegulov, Arman; Begentayev, Meiram; Begentayev, Bagustar; Uakhitova, Aigul; Zhakipov, Nazhmitden; Sadvakasov, Toktar

doi:10.2316/p.2012.756-029

Cited by 1 publication

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“…Solving Eq. (19) and substituting the values of mathematical descriptions of the relative rms dependences of total (8) and active (16) conductivities of electrical installations phase insulation relative to the ground phase, we get the following equation:…”

Section: Analysis Of Error Of Methods Determining the Insulation Parammentioning

confidence: 99%

“…Measurements on the coal mine Ekibastuz were taken by the developed methodic of determining the insulation parameters in networks with isolated neutral under 1000 V at normal operating conditions of the electrical network of excavators with operating electrical receivers [8].…”

Section: The Study Of the Condition Of Insulationmentioning

confidence: 99%

“…For experimental studies of the state of insulation of three-phase electrical networks with isolated neutral with voltages up to and above 1000 V, a number of methods were proposed [1][2][3][4][5][6][7][8][9], taking into account the inherent specific characteristics in the internal power supply of open-cast mining. For the insulation parameters measuring methods, a number of requirements are presented, namely:…”

Section: Introductionmentioning

confidence: 99%

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Special Issues of Ensuring Electrical Safety in Networks with Isolated Neutral Voltage up to 1000 V at Mining Enterprises

Utegulov¹

2019

Industrial Engineering

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In the practice of operating mining machines and complexes, there are no effective ways to monitor the state of insulation and protect a person from electric shock in a network with voltages up to 1000 V. There is a risk of electric shock with a fatal outcome for personnel. Consequently, the issue of development of methods for monitoring the state of insulation and protection against electric shock in a network up to 1000 V for mining machines and complexes is relevant and urgent. The existing protection of a person from electric shock effectively works provided that the total insulation resistance is commensurate with the capacitive insulation resistance of the phases of the electrical network relative to the ground. But, at mining enterprises, a violation of ratio takes place between the total and capacitive insulation resistance of the network, which leads to failure of the protection against electric shock. Therefore, to ensure electrical safety criteria when operation of electrical installations in the network is up to 1000 V, it is necessary to consider the insulation condition and the technical capabilities of available protection against electric shock in a complex.

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Section: Analysis Of Error Of Methods Determining the Insulation Parammentioning

confidence: 99%

Section: The Study Of the Condition Of Insulationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Special Issues of Ensuring Electrical Safety in Networks with Isolated Neutral Voltage up to 1000 V at Mining Enterprises

Utegulov¹

2019

Industrial Engineering

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Method for Determining the Insulation in Asymmetric Networks with Voltage up to 1000 V in Mining Enterprises

Cited by 1 publication

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Special Issues of Ensuring Electrical Safety in Networks with Isolated Neutral Voltage up to 1000 V at Mining Enterprises

Special Issues of Ensuring Electrical Safety in Networks with Isolated Neutral Voltage up to 1000 V at Mining Enterprises

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