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Use of Megger Tester

01/29/2012 4:00 AM

I have already installed wiring in a certain room but before to energized I need to perform MEGGER TESTING. Can anybody tell what should I do to operate and apply this tools. Thank You

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#1

Re: Use of MEGGER TESTER

01/29/2012 4:24 AM

Megger TestingMegger® testing is normally conducted on 600 volt power cable for either acceptance ormaintenance purposes. This device applies a DC voltage (typically 600 to 2500 volts) forseveral minutes. While the voltage is applied, the device measures the current "leaking"through the insulation and displays the results in units of resistance (Megohms or millionsof ohms). A low reading (less than about 100 Megohms) indicates possible cable problems.The word "Megger" is a registered trademark of AVO International (formerly the BiddleCo.), but the term is widely used for all similar tests regardless of manufacturer

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#2

Re: Use of MEGGER TESTER

01/29/2012 5:29 AM
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shamith gambhir, electrical engineer
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#3

Re: Use of MEGGER TESTER

01/29/2012 6:38 AM

megger is used for multi testing purposes.. you have not mentioned what kind of test you are doing... my predictions are that you are trying to find short circut test or continuty test so listen for short circut testing sperate all the wires from you distribution board (D.B) now take both wire of megger and attacth both wires at phase and neutral wire respictivley if megger show the result zero it means there is short circut not this short circut may be many cause if in your rooms there is any consuming device i.e fan bulb etc then off it before you are testing short circut if all the buttons are in off position and no equipment is there then it means there is short circut in wire i.e phase and neutral both wires are short circuted......

if you are testing leakeage in wires now take megger one wire and attacth this wire to phase wire and another megger wire to your pipe or cable tray in which there is your wiring if megger show resistance it means your wiring insulation is alright if it show zero are some reading it means there is leakeage,,,,,,

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#4

Re: Use of Megger Tester

01/29/2012 5:08 PM

You are a very scary person!!!!

If you do not know how to perform the most basic Safety Testing on a new circuit, you have No business installing cabling in someones Factory or Home.

Leave it alone and get an Electrician in to perform the works.

Insulation Resistance and Continuity testing are the fundamental tests required for a newly installed circuit.

If this post is in reference to the 80mm2 in your other post, get out of the pit and walk to the nearest telephone and contact a licenced electrician who wont put peoples lives at risk, including Your own!!!!!

Regards,
Sapper.

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#5
In reply to #4

Re: Use of Megger Tester

01/30/2012 5:53 PM

GA Snapper, your Signature line says it all! All though there's no myth about the out come of this guy with his skill level. Now, can we all say in unison, "Crispy Critter."

I will nominate this guy for 2012 Darwin Award!

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#6
In reply to #5

Re: Use of Megger Tester

01/30/2012 6:45 PM

it could have been worse, he didn't ask about high pot

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#7

Re: Use of Megger Tester

02/19/2012 6:44 AM

if u r testing the insulation of wiring u have done it for a room then i think u should first check the short circuit test of all the points with the common line. it should show open circuit.

talking about megger test its simple. first if u have installed electric switches, then switch all of them off. now go to service line wires of that room. u have got two wires. connect the megger's probe to that two wires. switch on the megger and check resistance. it should be in mega ohms.

while performing megger test keep in mind that megger generates around 600 volts a.c. all the electronic equipment should be disconnected. other wise a boooooom.

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