Answer / virendra joshi

Generally allThe CT operated meter is designed for a
capacity arround 5 A , the ct ratio 50/5, 100 / 5 means the
secondary current of the secondary winding will not exceed
more than 5A

Answer / wasif

50/5 means that if 50 amps currnt will flow in primary then
5 amps current will flow in secondary. Actually it is the
transformation ratio of the ct Ip/Is

Answer / jagadish

CTs are Instrument Transformers used for Metering or
sensing where the whole primary current cannot be fed into
meter or relay.Hence the same is porportionately reduced by
ratio and connected to load eg.Ammeter,kwH meter &Relay etc

Answer / bibhu prasad sahu

CT is a instrument transformer which is converting high
current to low current(5amps).In power system we are using
it for metering & for function of protective instruments &
indicating lamps in control panel.These instruments
mechanism can not sustain more current than 5 amp.

Answer / sanjay kumar

it is very easy to standered of primary current e.i
25,50,100,150,200,250,300,400,600,800,1000,1250,1600 and
2000 etc convert in to secondry current in perfect number
between minimum and maximum primary current, losses (i2r)
in ckt very low.
For that purpose 5 is perfect number

Answer / madhu

Generally allThe CT operated meter is designed for a
capacity arround 5 A , the ct ratio 50/5, 100 / 5 means the
secondary current of the secondary winding will not exceed
more than 5A.Our kwh meter capacity max 5A so consumers more
requirement ex- 50A consumer load so our kwh meter not
measured the reading that cases using ct .ex 50/5 50a flows
in a line meter shows 5A its ratio 50/5 = 10 so ct ratio 10
ex our units 12/day multiply by 10 = 120 units/day

Answer / rohitash saini

c.t is a current transfarmer which measure electrical current in system. we identify it just that 100/5than the ratio 20:1
that is when primary taken 20 amps current then secondary turn taken 5amp.when we put c.t ratio in digital meter after he showing direct reading .

Answer / neeraj duklan

Generally allThe CT operated meter is designed for a
capacity arround 5 A , the ct ratio 50/5, 100 / 5 means the
secondary current of the secondary winding will not exceed
more than 5A

Answer / yash

CT- Current transformer basically design for metering and sensing purpose .and KWH meter basically design for capacity around 5 A . So CT always available in ratio 5 A.

Answer / mukhesh

All the cts are oparated in the ranges of primary 25 50
66 ....,depends on reqirement it is only for chekink of the
curent relesed from the t/f and it gives ratio of exactly 5
a ratio ther is no change if any increese or decreese relay
oparation will come into the picture if at any of time will
touch 5A rating high curent will devolope at time of touch
immedeaatly burnt out

why transformer capacity is called KVA and motor capacity is called HP/KW? Why transformer capacity cant call HP/KVA?

5 Answers  

What is A.C Resistance for Earthing ?

2 Answers  

I do wonder why current is present in neutral wire?i check single phase lead current feeding air conditioner...on its phase its current was 10A while same was 10A in neutral...as we know in neutral voltage is zero so if voltage is zero then how current appears on amp meter? my second observation is (just imagination)when I touch phase wire it give me shock but when i touch neutral nothing happens although as above its carrying current(amps) third but with same logic...as in simple Alternate current sine curve there is + and there is negative peak.means every time phase changing so how come every time same phase and same neutral stand (pardon for english mistakes)

1 Answers  

How Cable Size is determined for a Particular load.

4 Answers  

A resistor,inductor and capacitor are connected in series respectively.Voltage across resistor is 40v,across inductor is 70v,across capacitor is 100v.Then what is the total voltage applied across the elements?

5 Answers  

why ct is testing using dc.. y cant we use AC insted of dc on POLARITY TEST.

6 Answers  

How maesure earth neutral value & how much maximum value value required in between earth & neutral.

0 Answers   Bellsonica, NEC,

What is signal flow graph?

0 Answers  

what is hourly consumption of coal in therma plant

2 Answers   NPCIL,

How many no of flip-flops are required to get 16 bit counter

10 Answers   HAL,

What are the ratings of VCB, MCB, MCCB, SF6, ACB, and OCB?

0 Answers  

th how could we differentiate between armoured copper and armoured aluminium cable what is the basic application? why we prefer the armoured copper as compared to armoured aluminium.

0 Answers   HMC,