Technical Specifications

Current Transformation Ratio - N 1:2000
Maximum DC Primary Current - IP(DC) ±400 A
Current Polarity Bipolar
Maximum DC Secondary Current - IS(DC) ±200 mA
External Shunt Resistor - RS 0 ... 40 Ω
Small Signal Bandwidth (±3 dB) - typ. BW > 100 kHz
Equivalent Input Noise (@Bandwidth) * < 1.5 ppm/FS @ 200Hz
< 10 ppm/FS @ 50 kHz
Output Voltage ("V"-version) - VOUT ±10 V
Output Voltage Gain ("V"-version) - VOUT/IP(DC) 25 mV/A
Maximum Output Current ("V"-version) ±15 mA
Temperature Coefficient - TC < 0.5 ppm/°C
< 2 ppm/°C ("V"-version)
Maximum Total Output Offset* < 10 ppm / FS
Non-Linearity < 5 ppm
< 15 ppm ("V"-version)
Induction into Primary (typ.) 30 µV (RMS)
Protection Signal OK Status
Supply Voltage (±6%) ±15 V
Connections D-sub 9 connector
Mechanical (Outer) Dimensions 94 x 91 x 50 mm
Primary Conductor Hole Diameter - Ø 30 mm
Operating Temperature Range 0°C ... 50°C
Accuracy typ. * < 30 ppm / FS
< 0.25% / FS (“V” - version)
Maximum Weight 380 g
* These specifications are guaranteed only when the CT sensor is used with the dedicated CAEN ELS PS1215 power supply

Ordering Options

Product code Description Ordering Code
CT-400 400A Primary Current 0-FLUCS WCT400XAAAAA
CT-400V 400A Primary Current 0-FLUCS, Voltage Output WCT400VXAAAA
CT-0.05% CT - Voltage Output Accuracy < 0.05 % WCTCUST0500X

Immagine del prodotto

The 0-FLUCS (0-FLUx Current Sensor) family is based on a closed loop technology that allows accurate and precise monitoring of DC and AC currents with high bandwidth, very low noise and negligible drift.

The CT-400 transducers are rated at a at maximum bipolar primary current of 400A with a transform ratio of 1:2000.

Galvanic isolation between the primary and the secondary circuits allows to measure currents at a different potential and simplifies interfacing when using the 0-FLUCS as the feedback element of current regulated power supplies.

Output from the CT-400 transducers can be chosen between two different versions: secondary current output or buffered voltage output (low temperature coefficient shunt resistor and low-noise amplifier are embedded in the device).

Main characteristics of the 0-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.

0-FLUCS exclusive technology allows the user to obtain performances which cannot be reached with other current sensing techniques.

Want to get more into this topic? Just click the following link:

0-FLUCS Exclusive Technology - An Overview

Immagine del prodotto

All CT-400 devices also have different mounting holes in order to be easily installed in different configurations. Both self-threading screws and normal ones can be used.

Main application fields for these current transducers are precise and extremely stable regulated power supplies and power inverters.

Due to the excellent characteristics, the CT-400 transducers can be used in a variety of calibration, acceptance testing and quality control applications in industrial, power generation and automotive fields.

Commercially available versions of the CT-400 current transformers are the current-output CT-400 and the respective voltage-output version CT-400V. A LED indicating the correct operation of the device is present on all versions.

  • Monitoring of AC and DC currents
  • Excellent Linearity
  • Closed-loop detection
  • Galvanically isolated from primary
  • Low Temperature Drift
  • Current-output or Voltage-output versions
  • Wide bandwidth
  • UL 94 V-0 flammability grade
  • LED indicates correct operation
  • D-sub 9 connector
  • 3-year extended warranty

Documentation Software/Firmware
CT-200-300-400 - User's Manual v1.4 Last update: 2018-03-12 13:37:33

CT-200-300-400 - Product Presentation Last update: 2018-04-23 10:09:40

0-FLUCS Technology - Introduction v1.2 Last update: 2015-07-01 12:17:38

Software/firmware not available.

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