Interested to Buy Any Domain ? << Click Here >> for more details...
What is the difference between the watt hour meter and Var
hour meter in terms of internal connection and work theory .
ie "When the meter records watt-hour an when the meter
records var hours ??"
- 13 Answers
- 19331 Views
- I also Faced
- E-Mail Answers
Answer Posted / k.prakashchandra
I came across a site with all details in Google ,but can not
retrace it now.However ,I am furnishing the following from
the other sites.1.The KVARH meter has a displacement angle
(-90')for current coil lagging the voltage in voltage coil
where KWH meter has zero degree displacement angle.2. The EM
meter (for 3 phase power)feeds power of each line(phase)
through it and disc spins for either WH or VAH .The only
difference for VARH meter is that there is an equipment for
displacement of voltage by 90'.This can be an auto
transformer or RC circuit.From my first reply, you can see
that the line voltage YB is at 90' to R
| Is This Answer Correct ? | 1 Yes | 0 No |
Post New Answer View All Answers
1.What is the range of stator resistance of 3-phase induction motor? 2.Two electrically operated vibro motors are foxed in parallel direction in vibrating feeders. what is the direction of both vibro motors?
Parts of machine and their discription in details with suitable photo
If I want to lift the water at a height 50m from ground level through two inch(diameter) metal pipe then what is the capacity of motor pump is required? is it possible in single phase supply or not?
HOW DOES THE ELECTRONIC ENERGY METER WORKS?
what will happen if synchronous machine rotor fed from single phase ac supply
i am an maintenance engineer. one distribution board have 5 feeder. recently its ELR trips frequently, but it take some times after trip( 10min,20min..)but 3 feeder no load. two feeder only loaded. i checked one feeder IR value all values are above 50Mohm.but B phase to Earth is only 9Mohm.any problem about low value
How I calculate the ELCB for circuit breakers?
dg started in plc mode and load taken later one battery terminal connection will be disconnected by loose connection what will happen for dg and shall we connect battery terminals while dg in load time?
What is a difference between indoor transformer and outdoor transformer of same rating
why we take movement of rotor always in counter-clockwise direction in 3-phase induction motors?
In how we connect watt meter for open & short circuit test of a single phase transformer.
what percent do you derate your copper wire when you change from copper buss to copper wire
How do i right a ladder diagram that has 1 actuator that performs a full stroke followed by a half stroke
During FEED, you will have all the information with regards to cable. How will you calculate the MTO for MV and LV Cables? what are your considerations?
If a rotary UPS is in line through grid power; What would be the impact on Power Factor if the load through rotary ups is 25% , 50% , 75% & 100%. Will the power factor reduce with less load?
