Current RatioTurns Per CoilLoad ResistanceAccuracy ClassRated
FrequencyStringing
Aperture200A/40mA,400A/80mA5000≤5Ω150~60Hz≤φ17.00mmLoad Internal
ResistanceWithstand VoltagePrimary Side CurrentSecondary Side
CurrentRatio DifferencePhase
Difference≤580Ω>3000 VAC0.25A~200A0.05mA~4mA±0.235±7'Ratio
error(A)0.1A0.25A0.5A1A5A20A50A80A100A120A150A180A200A250ALinearity(‰)-4.77-4.71-4.50-4.40-4.46-4.35-4.31-4.24-4.21-4.18-4.17-4.17-4.17-4.22Current(A)0.1A0.25A0.5A1A5A20A50A80A100A120A150A180A200A250APhase
Difference()41.541.741.841.641.239.737.536.035.134.433.632.832.531.6Cautions
of Current Transformer:
1.Suggestions of choosing (Take ct for energy meter as
example) (1)Please offer
the primary current and secondary current or primary current and
ratio as per your requirements.
For example if the energy meter is 5(80)A, you may need a
current transformer with current to 80A or 100A.
(2) Please specify the accuracy as per
secondary circuit or accuracy requirements of energy meter.
For example If it's industrial
degree meter then you may need high accuracy current
transformer such Class 0.5S, Class 0.01/0.02.
(3)Customized terminal design for your primary
circuit - if it's not good for fixing or you need to integrated
with relay/shunt/terminal
block etc then you may need to offer your drawing for design
and adapt to the application.
(4)Plz choose the suitable secondary output terminal, if you
need to solder and fix it on PCB then you may need to
choose PCB/pin type, for other
situation you can use lead wires directly.
2.Standard of good current
transformer (1)Plastic
casing instead of traditional tape which is
anti-dust,ant-shock,anti-flaming for security.
(2)Central rubber hole is more flexible for
installation. (3)Moreover
current transformer become advanced and smart, hence 500mT
permanent magnetic immunity,
high accuracy when cosφ=0.5, smart CT with M-bus or RS485
communication are welcomed as well.
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