Answer / khursheed

Metering CTs have saturation restrictions to protect the
measuring instruments, but Protection CTs has higher limits
of saturation.

Answer / k.prabhakar reddy

Metering CT:Wil be used for the purpose of measuring of
current only.
Protection CT: Wil be used for the purpose of protection of
the power devices

Answer / kaarthikrt&c

Metering cts used only in measuring secondary currents(in
view of primary current),no knee point voltage ,winding
resistance is low.
Protection cts r used incase of any faults in d system,knee
point voltage is there,winding resis. is high.

Answer / ullas

metering ct= this belongs to accuracy class .1, 1 etc.
and used to measure current, can be indicated in ammeter
and also can be given to an energy meter to measure kwh.
the cts belong to this class is not used for back up
protection or main protection .
protection cts== this cts can be divided in to backup
protection cts and main protection cts.
backup protection cta belongs to calss 5p10, 10p10, 15p10
etc. these ct are used to give over current and earth fault
protection.
special protection cts= this is used for differetial, ref
protections.class ps
oe main thing you should understand is that these are
coming as different cores of a single ct.
that means a ct with 3 or 4 cores.
each core is meant for different purposes like metering,
backup, special (main) protecton.
i think u ca understand better now.

Answer / vijayakumar

Metering CT:Wil be used for the purpose of measuring of
current only.
Protection CT: Wil be used for the purpose of protection of
the power devices

Answer / lalit barsker

IN METERING C.T. SECONDARY(LOW VOLTAGE SIDE) OF THE CT IS
CONNECTED TO THE METER I.E. AMMETER WATTMETER e.t.c.and in
protection C.T. SECONDARY(LOW VOLTAGE SIDE) OF THAT CT IS
CONNECTED TO RELAY FOR PROTECTION PURPOSE WHEN FAULT OCCURS
RELAY SENSE IT AND C.BREAKER TRIPS.

Answer / krishnan

The class between metering and protection will be diffrent.

Answer / cnsubudhi

metering ct exclussively used to measure electrical
parameters.Where as protection ct used to protect the
devices.

Answer / karthikeyan

Metering CT: Wil be used for the purpose of measuring of V,
A, PF, Frequency etc.

Protection CT: Wil be used for the purpose of protection of
the power devices

Answer / venkatesh

ct measuring the currentand protection ct for
busbar,overcurrent.

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