Caen ELS FLUCS CT PCB Series User Manual

Dc current transducers

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DC Current Transducers
CT PCB Series
User's Manual
All Rights Reserved
© CAEN ELS s.r.l.
Rev. 1.11 – November 2022

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Summary of Contents for Caen ELS FLUCS CT PCB Series

  • Page 1 < DC Current Transducers CT PCB Series User’s Manual All Rights Reserved © CAEN ELS s.r.l. Rev. 1.11 – November 2022...
  • Page 2 CAEN ELS s.r.l. Via Vetraia, 11 55049 Viareggio (LU) – Italy Mail: info@caenels.com Web: www.caenels.com...
  • Page 3: Table Of Contents

    CT PCB Series User’s Manual Table Of Contents INTRODUCTION ....................8 CT PCB S ................8 ERIES VERVIEW CT PCB M ..............10 ODELS AND ERSIONS INSTALLATION AND OPERATION ............11 ....................11 ONNECTIONS PCB F ..............12 ECOMMENDED OOTPRINT PCB L ................
  • Page 4 CT PCB Series User’s Manual Revision Date Comment March 14 2013 Document created April 4 2013 First official release June 17 2013 Additional information added July 12 2013 Mechanical dimensions updated January 6 2014 Noise data added and OK+ and OK- changed pinout April 2 2014...
  • Page 5 User's Manual before any kind of operation. CAEN ELS d.o.o. reserves the right to change partially or entirely the contents of this Manual at any time and without giving any notice. Disposal of the Product The product must never be dumped in the Municipal Waste.
  • Page 6 CT PCB Series User’s Manual Read over the instruction manual carefully before using the instrument. The following precautions should be strictly observed before using the CT PCB series DCCTs: • Do not use this product in any manner not WARNING specified by the manufacturer.
  • Page 7 CT PCB Series User’s Manual The following table shows the general environmental requirements for a correct operation of the instrument: Environmental Conditions Requirements Operating Temperature 0°C to 50°C Operating Humidity 30% to 85% RH (non-condensing) Storage Temperature -10°C to 60°C Storage Humidity 5% to 90% RH (non-condensing)
  • Page 8: Introduction

    CT PCB Series User’s Manual Introduction 1. Introduction This chapter describes the general characteristics and main features of the DC current transducers of the CT PCB mount series. 1.1 CT PCB Series Overview < 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.
  • Page 9 Commercially available versions of the PCB-mount O-FLUCS current transformers are the current-output CT-13, CT-26 and CT-52 with their respective “V” voltage-output versions CT-13V, CT-26V and CT-52V. Top view of a sample of the O-FLUCS CT PCB Series current transducer is presented in Figure 1...
  • Page 10: Ct Pcb Models And Versions

    CT PCB Series User’s Manual Introduction 1.2 CT PCB Models and Versions < CT PCB series of current transducer has three different models that differ for primary current rating; each model is available in two different output versions – i.e. secondary current-output (standard) or secondary voltage-output (“V” version).
  • Page 11: Installation And Operation

    CT PCB Series User’s Manual Installation and Operation 2. Installation and Operation General considerations and description of pinout and recommended PCB layout are herein presented. 2.1 Connections Any transducer of the CT PCB series has 16-position pinout connections which that is used to mount the device to a Printed Circuit Board (PCB). Not all of these sixteen (16) pins are present in all versions, since the standard secondary current-output version has different signals with respect to the “V”...
  • Page 12: Recommended Pcb Footprint

    CT PCB Series User’s Manual Installation and Operation CT-13 or CT-26 CT-13V or CT-26V Pin # or CT-52 or CT-52V (Current Output) (Voltage Output) + 15 V -15 V OK - OK + Table 2: Transducer pinouts Please note that pins not present on the respective model and version are indicated as nc = not connected.
  • Page 13 CT PCB Series User’s Manual Installation and Operation Figure 4: Recommended PCB footprint (dimensions in mils) Figure 5: Recommended PCB footprint (dimensions in mm)
  • Page 14: Pcb Layout Guidelines

    CT PCB Series User’s Manual Installation and Operation 2.3 PCB Layout Guidelines Since the primary flowing into the primary conductor can be as high as 52A for the CT-52 and CT-52V models, it is necessary to correctly connect the current to be measured to the input pins (#1 to #8).
  • Page 15: Power Supply

    CT PCB Series User’s Manual Installation and Operation 2.4.1 Power Supply Supply voltages for the CT have to be fed to pin #10 (+15V) and to pin #12 (- 15V); both these voltages are referred to pin #11 (GND) and have a rated tolerance of ±6% on the nominal values.
  • Page 16: Ok Signal

    CT PCB Series User’s Manual Installation and Operation to avoid additional ground-loop noise pickup on the voltage-output version of the transducer. Please note that the maximum differential voltage between the VO RET and the GND pin has to be kept within ±0.5V. |��...
  • Page 17 CT PCB Series User’s Manual Installation and Operation Figure 8: OK signals connections using the +15V and the GND pins Figure 9: OK signals connections as digital interfacing to +3.3V Note that the connection scheme presented in is referred to the GND Figure 8 potential and the OK_SIGNAL is at low level (<0.4V) if the CT transducer is correctly working while it is at high level (>14.5V) when the transducer is not.
  • Page 18: Technical Specifications

    CT PCB Series User’s Manual Technical Specifications 3. Technical Specifications < Technical specifications for CT-13, CT-26 and CT-52 current transducers (both current and voltage output versions) are herein presented. Technical Specifications CT-13 CT-26 CT-52 Current Transformation 1:250 1:500 1:1000 Ratio - N Maximum DC Primary ±13 A ±26 A...
  • Page 19: Equivalent Input Noise

    Dimensions Maximum Weight 300 g * These specifications are guaranteed only when the CT sensor is used with the dedicated CAEN ELS PS1215 power supply Table 3: Technical Specifications 3.1 Equivalent Input Noise The typical equivalent input noise of the CT PCB transducer series is hereafter presented as a function of the measuring bandwidth and of the model.
  • Page 20: External Shunt Resistor

    CT PCB Series User’s Manual Technical Specifications 2000 20000 Bandwidth (Hz) Figure 10: Equivalent Input Noise graph (typical values) 3.2 External Shunt Resistor The maximum value of the external shunt resistor that can be connected on the output pin in the current-output versions is shown hereafter in the following chart. [mA] Figure 11: Maximum external shunt resistor (Current version only)
  • Page 21: Isolation Data

    CT PCB Series User’s Manual Technical Specifications 3.3 Isolation Data AC Isolation RMS Test Voltage 50/60 Hz, 1 min 3 kV (between “Ip+ & Ip-“ terminal and secondary) Table 5: Insulation data...
  • Page 22: Mechanical Dimensions

    CT PCB Series User’s Manual Mechanical Dimensions 4. Mechanical Dimensions The mechanical dimensions of the CT PCB series DC Current Transducers are hereafter presented (all dimensions are in mm): 47.6 1.15 5.08 35.6 Figure 12: Mechanical drawings...
  • Page 23 CT PCB Series User’s Manual Technical Specifications Figure 13: Mechanical drawings for WCT13XLPAAAA model...

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