The low or high resistivity soil layer formed in raining or freezing season affects the safety of grounding system, and leads the changes of grounding resistance of the grounding system, step and touch voltages on the ground surface.

This paper systematically discusses the seasonal influence on the safety of grounding system and the different methods to be adopted inorder to nullify the effect of seasonal changes.
Inorder to nullify the effect of the seasonal changes we can use long vertical grounding electrodes or by using chemically cha ....etc

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Presented By:-
Harsh Jha


Cryogenic Refrigeration (Freezing )
INTRODUCTION
Cryogenics may be defined as the branch of physics which deals with the production of very low temperature and their effect on matter.
It may also be defined as the science and technology of temperatures below 120K.
The word “cryo” is derived from a Greek word “kruos” which means cold.
Cryogenics use the absolute temperature scales. These are Kelvin(SI units) or Rankine scale  (English/US units)
Methods ....etc

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ABSTRACT
The low or high resistivity soil layer formed in raining or freezing season affects the safety of grounding system, and leads the changes of grounding resistance of the grounding system, step and touch voltages on the ground surface. This paper systematically discusses the seasonal influence on the safety of grounding system and the different methods to be adopted inorder to nullify the effect of seasonal changes.
Inorder to nullify the effect of the seasonal changes we can use long vertical gro ....etc

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substation grounding system ....etc

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Seasonal Influence on Safety of Substation Grounding

Introduction
The low or high resistivity soil layer formed in raining or freezing season affects the safety of grounding system, and leads the changes of grounding resistance of the grounding system, step and touch voltages on the ground surface.

This paper systematically discusses the seasonal influence on the safety of grounding system and the different methods to be adopted inorder to nullify the effect of seasonal changes. Inorder to nullify the effect of the seasonal changes we c ....etc

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Prepared by::Jithin G




FREEZING
Freezing is the processes in which all the liquids are changed into solids

This prevents the water loss

Prevents bacterial action
CONVENTIONAL SYSTEM
The meat is cooled to 4⁰C by usual refrigeration

Cutting and other operations increases the temperature

This have to be then cooled

Conventionally normal refrigeration is used but is inefficient and can produce localized cooling
CRYOGENIC FREEZING
The food enters the f ....etc

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Introduction

With the development of modern power system to the direction of extra-high voltage, large capacity, far distance transmission and application of advanced technologies the demand on the safety, stability and economic operation of power system became higher. A good grounding system is the fundamental insurance to keep the safe operation of the power system. The good grounding system should ensure the following:

To provide safety to personnel during normal and fault conditions by limiting step and touch potential.
To assur ....etc

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Seasonal Influence on Safety of Substation Grounding


With the development of modern power system to the direction of extra-high voltage, large capacity, far distance transmission and application of advanced technologies the demand on the safety, stability and economic operation of power system became higher. A good grounding system is the fundamental insurance to keep the safe operation of the power system. The good grounding system should ensure the following:

To provide safety to personnel ....etc

[:=Read Full Message Here=:]

Introduction

With the development of modern power system to the direction of extra-high voltage, large capacity, far distance transmission and application of advanced technologies the demand on the safety, stability and economic operation of power system became higher. A good grounding system is the fundamental insurance to keep the safe operation of the power system. The good grounding system should ensure the following:

To provide safety to personnel during normal and fault conditions by limiting step and touch potential.
To assur ....etc

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wnna more information on this topic ....etc

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