EA002 2 / 10 / 50 CLAMP COIL ADAPTER
OPERATION MANUAL
Transmille Ltd.
Page 4
EA002 Clamp Coil Adapter
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Calibrates Clamp Meters up to 1000Amps
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2 / 10 / 50 Turn Coils
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High Accuracy Balanced Design
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Wide range of clamp sizes covered
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Complete with alignment table & connection leads
Designed for the calibration of both wound (AC only) & Magnetic field (hall effect) AC/DC
clamp meters the Transmille current coil offers several unique features built in a robust
construction.
Theory of Operation
The coil effectively multiplies the current produced by the calibrator by the number of turns
of the coil, e.g. 2, 10, and 50 with the Transmille coil. The principle is each turn of the coil
produces a magnetic field proportional to the current flowing in it. If you take 50 wires all
side by side with the same current flowing in the same direction the magnetic field for each
turn of wire will add together and produce a magnetic field 50 times stronger, e.g. the
same magnetic field as one wire with 50 times the current flowing in it. By using a 50 turn
coil it is possible to calibrate clamp meters up to 1000 Amps without having to actually
generate more than 20 Amps (available from the 3000 Series calibrators). Clamp meters
up to 3000 Amps can be calibrated when using Transmille’s 50 Amp transconductance
amplifier.
