Answer / mohammed

An isolation transformer is a transformer, often with
symmetrical windings, which is used to decouple two
circuits. An isolation transformer allows an AC signal or
power to be taken from one device and fed into another
without electrically connecting the two circuits. Isolation
transformers block transmission of DC signals from one
circuit to the other, but allow AC signals to pass. They
also block interference caused by ground loops. Isolation
transformers with electrostatic shields are used for power
supplies for sensitive equipment such as computers or
laboratory instruments.

Answer / s.arunachalakumar

ISOLATION TRANSFORMER IS MAGNATICALLY CONNECTED.BUT
ELECTRICALLY DISCONNECTED.I HAD ISOLATION (OR) INSULATION
BETWEEN THE PRIMERY AND SECONDERY WINDING.IT WAS TRANSFOR
THE ENERY FROM ONE CIRCUIT INTO ANOTHER CIRCUIT WITHOUT
CHANGE IN FREQUENCY.

Answer / nitin narwal

slaludin i just want 2 make u correct
optocoupler can operate at d.c
and u can not use transformer on d.c

yes purpose of both are same,but both are meant 4 diff.
cnditions

Answer / v.sudhakar reddy

is a transformer, often with symmetrical windings, which is
used to decouple two circuits. An isolation transformer
allows an AC signal or power to be taken from one device
and fed into another without electrically connecting the
two circuits. Isolation transformers block transmission of
DC signals from one circuit to the other, but allow AC
signals to pass. They also block interference caused by
ground loops. Isolation transformers with electrostatic
shields are used for power supplies for sensitive equipment
such as computers or laboratory instruments.

Answer / suthan prabhu

The transformation ratio of isolation transformer is 1.
primary winding may connect in delta or star but the
secondary winding should be connect in star.

Answer / sivananda samantara

isolation t/f is mainten the freqency&voltage same i/p&o/p
it uses for small eloctronic circuit like server in
datacenter,computer

Answer / salahuddin

isolation transformer is an optocoupler

Answer / rocky

the transformation ratio,k=Ns/Np=1.

why the value of impedence is taken as %impedence in fault currrent calculation

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