Important: Use custom search function to get better results from our thousands of pages

Use " " for compulsory search eg:"electronics seminar" , use -" " for filter something eg: "electronics seminar" -"/tag/" (used for exclude results from tag pages)

Thread Rating:
  • 0 Votes - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
what is chemical earthing
Post: #1

i want to know which chemical use in chemical earthing please give me full formula and what is chemical earthing.
Post: #2
Post: #3
This article is about electrical supply earthing systems. For earthing pits/ground, see Ground (electricity).
In electricity supply systems, an earthing system or grounding system is circuitry which connects parts of the electric circuit with the ground, thus defining the electric potential of the conductors relative to the Earth's conductive surface. The choice of earthing system can affect the safety and electromagnetic compatibility of the power supply. In particular, it affects the magnitude and distribution of short circuit currents through the system, and the effects it creates on equipment and people in the proximity of the circuit. If a fault within an electrical device connects a live supply conductor to an exposed conductive surface, anyone touching it while electrically connected to the earth will complete a circuit back to the earthed supply conductor and receive an electric shock.

A protective earth (PE), known as an equipment grounding conductor in the US National Electrical Code, avoids this hazard by keeping the exposed conductive surfaces of a device at earth potential. To avoid possible voltage drop no current is allowed to flow in this conductor under normal circumstances. In the event of a fault, currents will flow that should trip or blow the fuse or circuit breaker protecting the circuit. A high impedance line-to-ground fault insufficient to trip the overcurrent protection may still trip a residual-current device (ground fault circuit interrupter or GFCI in North America) if one is present. This disconnection in the event of a dangerous condition before someone receives a shock, is a fundamental tenet of modern wiring practice and in many documents is referred to as automatic disconnection of supply (ADS). The alternative is defence in depth, where multiple independent failures must occur to expose a dangerous condition - reinforced or double insulation come into this latter category.

In contrast, a functional earth connection serves a purpose other than shock protection, and may carry power or signal current as part of normal operation. The most important example of a functional earth is the neutral in an electrical supply system. It is a current-carrying conductor connected to earth, often, but not always, at only one point to avoid flow of currents through the earth. The NEC calls it a groundED supply conductor to distinguish it from the equipment groundING conductor. Other examples of devices that use functional earth connections include surge suppressors and electromagnetic interference filters, certain antennas and measurement instruments. Great care must be taken when functional earths from different systems meet to avoid unwanted and possibly dangerous interactions, for example lightning conductors and telecom systems must only be connected in a way that cannot cause the energy of the lightning strike to be redirected into the telephone network.

Regulations for earthing systems vary considerably among countries and among different parts of electric systems. Most low voltage systems connect one supply conductor to the earth (ground).

Marked Categories : chemical earthing, ppt on chemical earthing, chemical earthing tips, project report on chemical earthing, chemical earthing ppt, where chemical earthing used, earthing, what is chemical earthing,

Quick Reply
Type your reply to this message here.

Image Verification
Image Verification
(case insensitive)
Please enter the text within the image on the left in to the text box below. This process is used to prevent automated posts.

Possibly Related Threads...
Thread: Author Replies: Views: Last Post
  chemical enginering project on solar pond manisha sonkar 1 0 31-01-2018 11:26 AM
Last Post: dhanabhagya
  Qualitatively Analyze the Chemical Composition of two Alloys: Brass and Bronze project girl 2 876 12-01-2018 10:52 AM
Last Post: dhanabhagya
  Chemical Test for Caffeine mkaasees 1 0 07-01-2018 12:54 PM
Last Post: Guest
  chemical earthing wikipedia Guest 1 235 06-10-2017 01:06 PM
Last Post: jaseela123
  rational design and synthesis of new chemical entities a potential anti-infective age subine 1 112 19-09-2017 03:20 PM
Last Post: jaseela123
  Combinative Chemical Disinfection Techniquesion presentation Abstract 1 198 19-09-2017 09:50 AM
Last Post: jaseela123
  cavitational reactors for process intensification of chemical processing applications subine 1 236 12-09-2017 11:12 AM
Last Post: jaseela123
  Infrared Chemical Imaging: The Future of Fourier Transform IR Spectroscopy seminar flower 1 385 02-09-2017 03:28 PM
Last Post: jaseela123
  Trepanning of Al2O3 by electro-chemical discharge machining (ECDM) seminar tips 1 559 28-08-2017 01:21 PM
Last Post: jaseela123
  Electrical and chemical diagnostics of transformer insulation Electrical Fan 0 8,598,309 25-08-2017 09:32 PM
Last Post: Electrical Fan
This Page May Contain What is what is chemical earthing And Latest Information/News About what is chemical earthing,If Not ...Use Search to get more info about what is chemical earthing Or Ask Here