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Application Leads |
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Precision
Measurement and Monitoring Sensor Technology
Sales Department, TaeHwaTrans
288-2, Misan-dong, Sihung-city,
Kyunggi-do, Korea |
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Introduction |
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The industrialization and digitalization comes
to introduce and require a new technology to meet
the newly burgeoned needs and safety standard through
all walks of life.
In tandem with industrial evolution, Tae Hwa Trans
Co.,Ltd. phases in a new technology and creative
solution with the precision measurement and monitoring
current sensor technology.
We are dealing with state-of-the-art accuracy current
transformers(current sensors), high accuracy &
high transients monitoring current transformers(current
sensors), DC influence immune current transformers(current
sensors), residual ground fault current transformers(current
sensors), rogowski coils in measurement and protection
and the like.
TaeHwaTrans is acting upon enhanced recognition
as excellent global quality provider and directing
all its resources to quality oriented, customer
oriented, and future oriented. |
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How to Choose the right Models |
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In order to oversee all the models and go straight
to the wanted transformer(sensors) in matching with
each individual applications, one should recognize
and review what their application requires to meet
the original function and features.
Accordingly we would like to sales lead a brief
identity and guideline of each transformers(sensors). |
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Supreme
Accuracy Current Transformers (Current Sensors) |
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The linearity error
and phase shift is nearly close
to zero point especially even
at the minimal current and extremely
accurate at the low power factor
mostly suitable for the best performance
to the solid state energy meters
and accurate test instruments.
The guaranteed accuracy is 0.2
class. |
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Commercial
Monitoring Current Transformers (Current Sensors) |
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The transformer
shows good linearity properties
and high saturation point.
The accuracy ranges from class
1.0 through class 3.0.
The nominal application spreads
from motor / heater control, digital
protection relays to all kinds
of over current and monitoring
sensors. |
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DC
Immune Current Transformers (Current Sensors) |
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The intrinsic characteristics
is an excellent linearity properties
and steady phase shift with best
immunity to the DC components
or influence.
Every different models have their
own phase angle error, but the
same part number has an equivalent
phase shift so as to compensate
and calibrate to the zero phase
level. |
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Zero
Phase Current Transformers (Current Sensors) |
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Zero phase current
transformers are to sense the
residual current occurred by the
ground faults between one being
live (hot) and the other neutral
under the conditions of the balance
current, mostly in the earth leakage
circuit breakers and industrial
leakage breakers.
The features of ZCT is to act
precisely upon the minimal level
of differential current with high
sensitivity. |
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Ground
Fault Current Transformers (Current Sensors) |
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Differential transformers
and grounded neutral or arc transformers
used to be composed for the outlet
receptacle. The differential transformer
has the exceptional sensitivity
and load shift close to almost
zero, and the neutral or arc transformer
reacts precisely upon instantaneous
change of current level or inductance. |
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Rogowski
Coils |
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Rogowski coils
show limitless saturation characteristics.
Air-core di / dt sensors measuring
alternating currents in primary
induce a secondary voltage in
the coils that is proportional
to the rate of current change.
Rogowski coils have an associated
phase shift of 90 degree at all
input frequency.
This phase shift can be compensated
by minus 90 degree phase shift
using the integrator such as Analog
ADE7759.
In these days, the application
like ASS and ACB in Rogowski coils
is now further extended into the
energy measurement and other high
frequency devices. |
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