What is a Megger used for?

What is a Megger used for?

The Megger insulation tester is a small, portable instrument that gives you a direct reading of insulation resistance in ohms or megohms. For good insulation, the resistance usually reads in the megohm range.

What is Megger test?

Megger testing is an electrical test of insulation performance in an electrical apparatus. A mega-ohm meter is applied to each phase connection for the motor leads and ground, and a voltage applied. ... Megger testing measures resistance between the phase windings of the motor under test and ground.

What is the normal speed of Megger?

Click here for :Free SSC Mock test by topic 4) 160 r.p.m.

Which generator is used in Megger?

Hand driven PMDC generator is used in this test.

Is a Megger AC or DC?

Therefore, if we apply AC voltage during IR test then there will always be a flow of current through the capacitor and thus a leakage current to the ground. ... This is the reason, an Insulation Tester or Megger have DC voltage generator.

How much does a Megger test cost?

All Megger Products

1000-434	Megger 1000-434 Dual Clamp Calibration and Spacing PCB	MSRP $140.00 Sale $111.25
1004-449	Megger 1004-449 Lead Set, CAT IV 600V, 10 m, for DLRO100 Series	See Price In Cart $1,170.00
1004-450	Megger 1004-450 Lead Set, CAT IV 600V, 15 m, for DLRO100 Series	See Price In Cart $1,640.00

Why DC is used in Megger?

If we apply DC voltage then as we know Capacitor blocks the flow of DC, only leakage current due to imperfection of insulator will flow and hence the Resistance measured by Megger will actually represent Insulation Resistance. This is the reason, an Insulation Tester or Megger have DC voltage generator.

Which supply is used in Megger?

Explanation: Megger works on the principle of electromagnetic induction. Supply can be given through a dc motor. A permanent magnet dc motor driven by hand is used as a source of supply to the megger.

How do I test my house wiring with a megger?

If you are testing insulation resistance to ground, place the positive probe on the ground wire or the grounded metal junction box and the negative probe on the conductor or terminal. Energize the Megger for 1 minute. Read the value of the resistance at the end of the minute test and note it in your table.

How do you test wire with a megger?

Clamp the alligator clip on one of the megger probes to the wire or cable, touch the other probe to the exposed conductor and press the test button. The megger will generate a current between the probes, and the meter will record the resistance of the jacket to the flow of the current.

What are the functions and uses of a Megger?

• Insulators
• Electric wires and cables
• Open and short circuit of winding
• Open and short circuit test of electric wiring

What is megger and how does it work?

• Megger is an instrument used to measure insulation resistance of windings, generators etc .In megger voltage is generated by d.c battery, hand operated dc generator , electrical source .

Why does Megger have a DC generator?

• The accurate insulation resistance can be done if the DC voltage is applied to measure the megger value. That is why a megger has DC generator.

What generator is used in a Megger?

• A megger uses a DC generator. Thus, we can see that a megger is a quite useful device that has numerous applications. It can be used to measure the resistance of insulators and is also used for testing of devices. It has different variants as well each of which has a different use.