The
Instrument Type Transformers
EID-CT series. Current, Indoor, Toroidal
current transformers
Key
Features:
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Toroidal
design.
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Supplied
with 24" insulated secondary leads, terminated with
crimped ring conneEID-CTors.
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Suitable
for use with bare (uninsulated) primary conduEID-CTor in
circuits up to 600 V (4 KV Hi pot); or at higher voltages
when a suitably insulated conduEID-CTor is used.
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All
units have 5 A secondary for use with standard AC ammeters
with 5 A movements.
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Two
hole mounting bracket on all models.
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Current
Ratio
Pri. / Sec.
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EID-CT50A
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EID-CT60A
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EID-CT75A
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EID-CT100A
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EID-CT150A
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EID-CT200A
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EID-CT250A
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EID-CT300A
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EID-CT400A
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EID-CT500A
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EID-CT600A
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EID-CT800A
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EID-CT1000A
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EID-CT1200A
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Application
Data:
To
obtain current measurement:
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Pass
the wire carrying the current to be measured through the
window of the EID-CT transformer (a EID-CT ling as a primary
winding).
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Connect
the EID-CT secondary to an ammeter with a 5 A movement.
For
higher accuracy or higher VA burden rating:
Choose
a EID-CT with a primary which is a multiple
of the required primary rating and which has the accuracy or
VA burden you require.
Loop
the wire carrying the current to be measured through the
window a number of times equal to the multiple. This
"winding" will reduce the ratio back to required
primary rating.
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Example
"A": To obtain an accuracy of 1.2% at 10VA
burden with a ratio of 100:5, use a EID-CT400 and loop 4
primary turns through the window.
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Example
"B": To obtain a 25:5 ratio, use a EID-CT75 with
3 primary turns to yield 2% accuracy or a EID-CT50 with 2
primary turns to yield 3.2% accuracy.
Mechanical
Data:
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