Answer / npcil

Because Ameter is cnnected is series with line while
voltmeter is connected across the phase & neutral. if any
fault/short circuit occured in line the fuse will cut and
save the voltmeter and cercuit.

Answer / syed shoeb ullah hussaini

look man ... In c.t load is
connected to the primary
winding and ammeter is
connected to secondary
winding hence there no fuse
in c.t .... Similary there no fuse
in potential transformer as
the voltmeter is connected on
secondary side with closed
loop of secondary and
winding .... P.t is step down
transformer hence in this also
no fuse is used .... Its was a
trick question to measure
your knowledge

Answer / the electrical genius

In case of C.T., if higher value of current will flow, the C.T. core will saturate and so not high current will flow in its secondary. Thus, no use of fuse in this case.

While in case of voltmeter, the resistance of voltmeter is very very high and it limits the current flowing through it in the range of mA. So use of fuse in that case is also not needed !

Answer / manan2347

Because during fault condition high transient voltage will occur thia voltage can damage voltmeter that is why we connect fuse across it, while in case of CT metering CT are made up of special core that can get saturated if voltage across its primary is beyond its limit, so no more current will flow during this condition, so there is no need to connect fuse with CT.

In 2500kva transformer how much is the withstand High voltage power frequency between primary to secondary and earth? And secondary to primary and earth?

1 Answers   Honeywell,

---

why rotor resistance starter is not suitable for squrielcage induction motor?why it is suitable for slipring induction motor?

5 Answers  

---

Define protection core in CTs Ex. 5P10, 5P20 etc.

1 Answers   HPL,

---

what is rating providing of contactor,relay,fuse unit for motor output power

2 Answers  

---

what is meaning of bus riser

0 Answers   TeamLease,

---

What happen when ct secondary are open circuited? why same thing is not happen in ordinary transformer?

3 Answers   BARC,

---

what questions are asked in the interview for the post of an electrical maintenance engineer in FMCG companies?

0 Answers  

---

What is Ton Capacity of Air Conditioner?

1 Answers   TATA,

---

is ac supply can store

0 Answers  

---

How can we determine or find out the proper size of any cable if nothing is mentioned on it.Calculation of size in Sq.mm???

1 Answers  

---

What is the formula to calculate the size of Aluminium and copper cable?

0 Answers  

---

Best way to measure the Soil resistance of rocky soil, three probe method and four probe method

0 Answers  

---