Interested to Buy Any Domain ? << Click Here >> for more details...
Why Current Transformers cannot be connected in parallel
- 10 Answers
- 46531 Views
- I also Faced
- E-Mail Answers
Answer Posted / mark fisher
Current transformers should be connected in series to
provide accurate signals for relaying or metering.
A CT has a very low resistance in the secondary winding.
Therefore, connecting two CT's in series does not
significantly alter the resistance of the circuit (i.e.
.0001 ohm + .0001 ohm = .0002 ohm). The voltage drop caused
by the addition of a second CT to the circuit is negligible.
Connecting two independent CT's in series to obtain a "Net
Current" value in a Breaker-and-a-Half configuration is
quite common.
However, connecting two CT's in parallel will result in the
effective resistance of the circuit being significantly
lower than the resistance of either individual CT (i.e.
.0001 ohm // .0001 ohm = .00005 ohm) and will cause the
voltage to be significantly higher (4X) than with a single
CT.
| Is This Answer Correct ? | 4 Yes | 1 No |
Post New Answer View All Answers
I have a CT meter with ratio 60/5. The meter reading of previous month was 3290.49 and that of current month was 3797.26. How many chargeable units as per normal meter should be my reading.
Explain the method to keep noises low in a control system?
what are the range of memory address in plc for L&T lx7 4A
electrical knowelge
In siemens S7-300 PLC, what is function and function block ? What is the difference between them ? When to use function and when to use function block ?
Transformer how to maintaince a check b check c check d check
How many Zones can be in Conventional type fire alarm system & how can we detect the fire in Conv. type FAS?
Which capacitor is preferred for high voltage and frequency?
True or false question. 1.The fuse provide phase and neutral 2.power loss in electrical circuit can take place in (resistance or inductance or capacitance). 3.two phase system each phase has separated by a phase difference of (90 or 180 or 270 or 45). 4.3 phase balanced star connected load neutral current shall be (line current or phase current or zero or unity)
Testing procedure of DG alternator stability test
what is meant by directional earth fault and non directional earth fault? describe both.
How to distinguish whether MCB is DC or AC looking at it physically
how is the testing of an REF relay? what are the test REF circuit having?
can we synchronize star system generators with delta system generators?
Can XLPE/SWB/PVC (P3) 7C X 2.5mm2 be replaced by Can XLPE/SWB/PVC (P2) 7C X 2.5mm2??? P3 vs P2
