Question { 18285 }

single sphase energy meter measur

Answer

The Single Phase energy meter It is also called Watt-Hour
Meter it is used for mesuring and record the
consumption of power in terms of hourly basis. an the basis
of bellow formula.

Power in KWH = Voltage x Current x Power factor xHours

Question { 9801 }

DIFFERENCE BETWEEN TRANSFORMER AND CURRENT TRANSFORMER?

Answer

transformer is an static device it power transfer to the
one circuit to another circuit without change the
frequency.and require of user if voltage step up or step
down etc.

Current transformer is an instument tranformer and used for
mesuring and protection agenst Earth fault and Over
current.

Question { 6855 }

what is Over current, earth fault (O/C+E/F) ?

Answer

over current meance nothing but a current reaches above the
rated CT Ratio. and over load and fault occur in between 2
lines line to line short circuit it is over currein fault.

Earth fault means fault occur between line to ground is
called Earth fault. used in power system