WHERE to use CVT & PT.
Answers were Sorted based on User's Feedback
Answer / gunasekaran
cvt is capacitive voltage transformer this is using from
132KV level
PT potential transformer this is using upto 132KV level
beyond this PT is not economical. CVT and PT both r step
down transformer. both r using measuring and protection
purpose but CVT we can use communication purpose.in CVT
capacitor acting as a potential divider.
Is This Answer Correct ? | 32 Yes | 5 No |
Answer / archana
CVT & PT both are protection & measuring devices. CVT is
used for high voltages above 132 Kv while Pt is used below
this. CVT has an added advantage that it can be used for
carreir communication.
Is This Answer Correct ? | 19 Yes | 4 No |
Answer / dpoo77
CVT means capacitive voltage transformer
PT means potential transformer
both are same in view of votage measurment
CVT is used in the line ckt while PT is used in the bus Ckt.
for ur kind informtion CVT may be used as PT but PT can not
be used as CVT as per .
Is This Answer Correct ? | 18 Yes | 8 No |
Answer / ali
We have 2 types of VT in the power systems:
1- Inductive Voltage Transformer (VT or PT)
2- Capacitive Voltage Transformer (CVT)
The main difference between VT and CVT is that the CVT is
based on capacitive voltage divider principle which steps
down the high voltage to a lower voltage level that can be
measured easier. This can make the VT much less bulky (save
space) and also less expensive. This is why that for voltage
levels up to 132 kV, it’s common to use conventional VTs but
at voltage levels more than 132 kV we use CVTs.
Is This Answer Correct ? | 11 Yes | 4 No |
Answer / pankaj kumar
VT and CVT are besically use the same fundamental physics for measure the voltage at sedondary as according to its primery..but the besic diff. Is VT usually use for measurement to voltage for protection ckts as well for metering purpose, CVT also can be use for the same purpose but additional advantage with CVT is it can be use in communication purpose as it does have the capacitors as a fliter who can diff. The communication signals and protection signals or you can say tele protection also the purpose depands on the classes of VT and CVT as according to requirement of protection and communication like over voltage pro. Distance pro. Or metering as per requirement
Is This Answer Correct ? | 4 Yes | 1 No |
Answer / rajeshsan
Generally the PT or CVT are used to measure voltage.
The secondary of the PT will be 110V which will be connected for the voltage measurement. For high voltage applications like 132 or 230 or 400kV. Designing the PT for 132 to 110V will be very bulky and practically leads to very big size.
Hence for high voltage applications we use CVT. The CVT is constructed using serious of capacitors. Consider we are connecting 10 capacitors of equal rating in series. Hence the voltage along the capacitors are equal we will take output of one capacitors are connect it to a PT and secondary of PT 110V will be used for measurement.
Is This Answer Correct ? | 9 Yes | 7 No |
Answer / praveen
CVT is used in feeders near substation. Where as PT is used Bus Bars.
I dont think CVT and PT are used on basis of Voltage ratings.. As every substation has both CVT and PT irrespective of voltage ratings at feeder and Bus Bar respectively.
And both their purpose is Protection and Measurement.
Is This Answer Correct ? | 0 Yes | 0 No |
it is connected bet communication wavedrop and Ct.it is
used for met &pro..it is nothing but acapacitor arrangement
due to this large level of voltage will be stored and due
to small stepdown transfomer inside it is reduced to as
plant req.Ex;400kv/1.732/1.1kv/1.732.
Is This Answer Correct ? | 4 Yes | 6 No |
CVT means capacitive voltage transformer which is connected
between the lightening arrester and CT,which is used to
measure the voltage in the line in higher ratings,PT is
connected at the end of the bus bar system which is also
used to measure the voltage.
Is This Answer Correct ? | 23 Yes | 37 No |
does frequency affects the load? if yes elaborate it.
how much current capacity 250 amp. mccb please tell me about whats are the reasons to trip 2 or 3 times in a night. and what are the steps to short out this problem
WHAT IS THE DIFFERENE IN ACTION OF MCB,MCCB,RCCB
Why a dc generator gives result during two different condition,- 1)separately exited gen.- Eg=110 V, field current=0.25 A. 2) self exited gen.- Eg=30 V, field current=0.025 A.
what is V.L.F. testing of power cable? do you know the voltage ratings, like for what rating and size of cable what rating of V.L.F. testing is used?
SMPS (Switch Mode Power Supply) unit is denoted by KW or KVA?
Let's say I have 2 current carrying conductors C1 and C2 carrying currents of 5A and 10A. They are brought close to each other from a distance of infinity to a distance of 10cm away from each other - 1. What would be the values of current flowing in each conductor when (taking into account effects of interference of each conductor on the other) - a. The currents are AC b. The currents are DC c. C1 is AC and C2 is DC Please explain your answer with mathematical equations and formulas. Please specify the final numeric answer. Please make assumptions and clearly specify them.
what is the diffrence between voltage and current?
Is AC Current Scalar or Vector Component?
Neutral CT for 45MVA 132/11 KV YNd11 Transformer. NCT REF CLASS-PS or 5P20 with 20VA burden which is suitable.
what is current overloading in stack
What is cogging and crawling phenomenon in motor.