Leading Electrical Power Transformer Manufacturer in India, Rajasthan Powergen Explaining the Difference between Current Transformers and Voltage Transformers
In the business of transformer exporters in
India, the difference between current and voltage transformers is a topic of
deep discussion. People in layman terms consider both of them to be similar in
their functions. The leading manufacturer of transformer in India, Rajasthan Powergenis explaining the difference between current transformers and voltage
transformers to help its customers.
The current and
voltage transformers differ in their construction, usage and functioning but
the function remains the same, i.e. to step down high current and voltages in
power system. In common usage both are collectively termed as instrument
transformers. This article will try to explain the similarities and differences
that exist between the two, their basic functioning and usage.
Both current and
voltage transformers are broadly classified under the category of instrument
transformers. Both of them are used to lower or step-down high current and
voltage respectively in electrical power systems to lower current and voltages.
This is done in order to aid in measurement of electricity by measuring
instruments. Thus, they separate the high voltage or high current circuits and
the measuring equipment. This act as a protection gear to safeguard the
metering instruments from high temperatures and thus getting burnt in high
voltages systems.
5A & 110V are
the standard ratings used in most of the metering instruments, which means that
the primary winding of an instrument transformer will be connected to the high
system voltages or high current circuits like 11Kilovolts, 25 kilovolt 33
kilovolt till 840 kilovolt and higher while the metering instrument is
connected to the secondary circuit that discharges 5 ampere in of current
transformers and 110 Voltage in voltage transformers.
Basics of Current Transformer
Instrument transformers
that transform a proportional amount of current in its secondary terminal as compared
to the primary are known as current transformers. Several models are used to
measure this proportion and thus given possibility with the copper windings which
form the core of the transformer. Current transformers are used to step-down
high voltage currents to lower value currents when use in live systems. The
instrument used to measure current is known as the ammeter.
The construction and
make of its core and windings is one major difference between the current and
voltage transformer. In CT, the primary winding consists of one or a sometimes
a few more turns in a current transformer. In voltage transformer this is not
the case.
Basics of Voltage
Transformers
Voltage Transformers
are used to step down the voltage in power systems. By using simple measuring
instruments, one can measure voltage. The standard instrument for measuring
voltage is knows as voltmeter. The universally standard measure of a voltmeter
is 110-120 Volts. There is a difference in their construction as well.
Both current and
voltage transformers are important elements in the business of electricaltransformer exporters in India, Rajasthan Powergen and in power generation and
electricity distribution grids. Measuring electricity in a cost effective way
is quite unachievable without them, thus, they together reduce the overall
costs incurred in electricity measurement.
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