DC Current Transformer Series

Product Overview
DC Current Transformer Series
PCB Mount
Current or Voltage Output
Closed-loop current transformer technology allows accurate monitoring of DC and AC bipolar
currents up to ±26A with a small PCB-mount device.
Galvanic isolation between primary and secondary conductor for simple current sensing at
different potential.
Standard current and voltage (“V”-version) output available.
t Monitoring of DC and AC currents
t Excellent Linearity
t Closed-loop detection
t Galvanically isolated from primary
t Low Temperature Drift
t Current-output or Voltage-output
t Wide Bandwidth
t High Accuracy
t PCB Mount versions
t Power Supplies
t Sensing Element in Calibration
t Biomedical Devices
t Nuclear Magnetic Resonance (NMR)
CT-26 Current Transducer
Secondary current measured over 2K temperature-cycling interval (48h measuring period),
15A primary current.
The O-FLUCS (O-FLUx Current Sensor)
is based on a closed loop technology
that allows accurate and precise
monitoring of DC and AC currents with
high bandwidth. The metal casing
guarantees higher noise immunity and
reduces undesired noise pick-up from
external sources.
The transducers CT-13 and CT-26 are
PCB-mount devices rated at maximum
currents of 13A and 26A with primary
to secondary transformation ratio of
1:250 and 1:500 respectively.
Galvanic isolation between the primary
and the secondary circuits allows
to measure currents at a different
potential and simplifies interfacing if
using the O-FLUCS as the feedback
element of current regulated power
Output from the O-FLUCS sensors
can be chosen between two different
versions: standard secondary current
output or buffered voltage output (low
temperature coefficient shunt resistor
and low-noise amplifier are embedded
in the CT-13V and CT-26V versions).
Main characteristics of the O-FLUCS
current transformers are negligible
temperature coefficient on the
secondary output current, excellent
linearity and extremely low noise.
DC current transformers represents
the ideal replacement for systems
where Hall-effect sensors are used as
current sensing elements and better
performances are needed.
The compact mechanical dimensions
of this transducer series and its limited
weight allows easy mounting on
printed circuit boards with a Through
Hole (TH) topology. A plastic cover
is placed on the bottom side of the
device to allow easier mounting on the
Main application fields for these
current transducers are precise and
extremely stable regulated power
supplies and power inverters.
Due to the excellent characteristics,
the O-FLUCS transformers can be used
mers are the current-output CT-13 and
CT-26 with their respective “V” voltageoutput versions CT-13V and CT-26V.
in a variety of calibration, acceptance
testing and quality control applications
in the industrial and automotive fields.
Commercially available versions of the
PCB-mount O-FLUCS current transfor-
About CAENels
CAENels is a dynamic company that
provides power supplies and state-of-the-art
dedicated electronic systems to the particle
accelerator community - e.g. synchrotron
light sources and Free Electron Laser (FEL)
CAEN els d.o.o.
Kraška ulica, 2
6210 - Sežana
Technical Specifications
Current Transformer Ratio - N
Maximum DC Primary
Current - IP(DC)
Maximum RMS Primary
Current - IP(RMS)
Maximum DC Secondary
Current - IS(DC)
Maximum RMS Secondary
Current - IS(RMS)
Small Signal Bandwidth ( ±3
dB ) - BW
Output Voltage (“V”-version)
Output Voltage Ratio –
Maximum Output Current –
Temperature Coefficient – TC
Protection Signal
Supply Voltage (± 6%)
Mechanical Dimensions
Maximum Weight
±13 A
±26 A
9.2 A
18.4 A
±52 mA
37 mA
> 200 kHz
±10 V
0.8 V/A
0.4 V/A
±15 mA
2 ppm/K
Yes - Primary Over-Current
±15 V
16-pin through-hole PCB mounting
66 × 65 × 50 mm
220 g
Phone +386 (0)5 7313 585
Fax +386 (0)5 7313 587
[email protected]
O-FLUCS – CT-model Bottom view
Voltage Output – “V” Version
20-kHz sine-wave primary current – i.e. IP [A]
– and output voltage on a CT-13V version – i.e.
VO [V].
Copyright © CAENels d.o.o. - 2013
All rights reserved. Information in this publication supersedes
all earlier versions. Specifications subject to change without
Printed in May 2013