Interested to Buy Any Domain ? << Click Here >> for more details...
in Megger what type of voltage(AC or DC) are produce.how
they work.
- 1 Answers
- 12900 Views
- I also Faced
- E-Mail Answers
Answer / karthik raman.b
The megger is a portable instrument used to measure insulation resistance. The megger consists of a hand-driven DC generator and a direct reading ohm meter. A simplified circuit diagram of the instrument is shown in Figure 17.
The moving element of the ohm meter consists of two coils, A and B, which are rigidly mounted to a pivoted central shaft and are free to rotate over a C-shaped core (C on Figure 17). These coils are connected by means of flexible leads. The moving element may point in any meter position when the generator is not in operation.
As current provided by the hand-driven generator flows through Coil B, the coil will tend to set itself at right angles to the field of the permanent magnet. With the test terminals open, giving an infinite resistance, no current flows in Coil A. Thereby, Coil B will govern the motion of the rotating element, causing it to move to the extreme counter-clockwise position, which is marked as infinite resistance.
Figure 17
| Is This Answer Correct ? | 6 Yes | 4 No |
electrical knowelge
What are factors to be considered while we selecting the Core Balance Current Transformer for Earth fault protection
How is operate breaker failure scheme in substation
if 3400kw slipring motor rotor shorting done and motor started on mv drive ,what will be the rotor shoring current
What is safety of Ht panel
How to decrease or increase the range of voltmeter? can an ammeter be used to measure voltage? can a wattmeter used as voltmeter and ammeter?
How to calculate the phase to phase clearness of HT /// LT bus bar?????
Alternators are invariably star connected why?
How to calculate that clean water supply in one Day from 150 KLD STP?
what is the difference between general inverter and solor inverter clerly explain plz
Stator of 3-phase IM has 3 slots per pole per phase, calculate number of stator pole pairs. A 1 B 6 C 2 D 3
how to erect roof control panel?
-
Civil Engineering (5086) - Mechanical Engineering (4456)
- Electrical Engineering (16639)
- Electronics Communications (3918)
- Chemical Engineering (1095)
- Aeronautical Engineering (239)
- Bio Engineering (96)
- Metallurgy (361)
- Industrial Engineering (259)
- Instrumentation (3014)
- Automobile Engineering (332)
- Mechatronics Engineering (97)
- Marine Engineering (124)
- Power Plant Engineering (172)
- Textile Engineering (575)
- Production Engineering (25)
- Satellite Systems Engineering (106)
- Engineering AllOther (1379)
