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DC Current Transducers
CT-200 CT-300
CT-400
User’s Manual
All Rights Reserved
© CAEN ELS s.r.l.
Rev. 1.5
–
November 2022
PRECI
SI
ON
C
URREN
T
TRAN
SDU
CERS
Page 1: ...DC Current Transducers CT 200 CT 300 CT 400 User s Manual All Rights Reserved CAEN ELS s r l Rev 1 5 November 2022 PRECISION CURRENT TRANSDUCERS...
Page 2: ...CT 200 CT 300 CT 400 User s Manual 2 CAEN ELS s r l Via Vetraia 11 55049 Viareggio LU Italy Mail info caenels com Web www caenels com...
Page 3: ...NNECTOR PINOUT 13 2 3 SECONDARY SIDE SIGNALS 14 2 3 1 Power Supply 14 2 3 2 Secondary Current current versions only 14 2 3 3 Voltage Output V versions only 14 2 3 4 STATUS Signal 15 2 4 MOUNTING 17 2...
Page 4: ...September 23th 2014 Added power supply recommendation section 1 2 November 3rd 2014 Manual graphics changed 1 3 July 8th 2016 Added data to technical specifications 1 4 March 12th 2018 Added informati...
Page 5: ...ns one to be used with the current output DCCTs and one with the voltage output ones the PS1215V is shown in the previous image Product Code Description WPS1215VXAAA PS1215V AC DC Single Output Dual V...
Page 6: ...ting any part of the instrument WARNING Do NOT open the boxes CAEN ELS d o o declines all responsibility for damages or injuries caused by an improper use of the Modules due to negligence on behalf of...
Page 7: ...damaged Before you use the device inspect the instrument for possible cracks or breaks before each use Do not operate the device around explosives gas vapor or dust Always use the device with the cabl...
Page 8: ...neral 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...
Page 9: ...between the primary and the secondary circuits in order to allow to current measurements at a different potential and simplifies interfacing when using the as the feedback element of current regulate...
Page 10: ...able 1 Product Code Model Description WCT200XAAAAA CT 200 200 A Primary Current Current Output WCT200VXAAAA CT 200V 200 A Primary Current Voltage Output WCT300XAAAAA CT 300 300 A Primary Current Curre...
Page 11: ...ansducer is presented in Figure 1 Figure 1 front view of a CT 200 CT 300 or CT 400 current transducer Rear view of the same current transducer where self threading holes for screws are visible is pres...
Page 12: ...s current transducer presents an embossed arrow with the CAEN ELS logo on one side of the plastic casing that indicates the verse of the positive primary current measurement This arrow can be seen in...
Page 13: ...2 These two versions have current or voltage output pins and their signal returns Pin CT 200 CT 300 CT 400 Current Output CT 200V CT 300V CT 400V Voltage Output 1 IS return nc GND 2 nc VOUT 3 Status...
Page 14: ...rn pins are respectively found on pin 1 and on pin 7 Maximum secondary current depends over the full scale range and the current transform ratio of the sensor For example for a CT 200 the full scale r...
Page 15: ...urrent output pin IS pin 6 and its return pin 1 are not present Please note that output impedance for the V version models is 50 and it is low pass filtered with a 0 5 s time constant 2 3 4 STATUS Sig...
Page 16: ...gital Signal Processor or an FPGA supplied by a 3 3V voltage source Please note that the 3 3V supply and the OK_SIGNAL is referred to DGND potential which can be the same or different from the GND pot...
Page 17: ...ny of the two 2 different 4 hole patterns placed in different sides of the mechanical case Four holes are present on the bottom of the device as indicated in the Figure 8 Figure 8 bottom mounting hole...
Page 18: ...distributed over the perimeter of the current transducer head Figure 10 primary current path non recommended layout left and recommended layout right Figure 10 left shows what happens if the primary...
Page 19: ...Figure 11 a primary full scale current of 300 A in the CT 300 model can be easily scaled by a factor 2 applying two primary turns and so the obtained full scale will be 150 A or by a factor 3 applying...
Page 20: ...have two different versions differing by the secondary output signal types The ordering code is formatted as follows C T M M M X NOTE fields characters shaded in grey color are fixed Output Version em...
Page 21: ...um DC Secondary Current IS DC 200 mA Maximum RMS Secondary Current IS RMS 141 mA External Shunt Resistor Value RS 0 40 0 30 0 20 Small Signal Bandwidth 3 dB typ BW 100 kHz Equivalent Input Noise Bandw...
Page 22: ...CT sensor is used with the dedicated CAEN ELS PS1215 power supply Table 3 Technical Specification 4 1 Equivalent Input Noise The typical equivalent input noise of the transducers is hereafter present...
Page 23: ...CT 300 CT 400 User s Manual 23 Figure 12 Equivalent input noise graph typical values 0 1 2 3 4 5 6 7 8 2 20 200 2000 20000 Equivalent Input Noise ppm FS Bandwidth Hz Noise CT 200 Noise CT 300 Noise C...
Page 24: ...600 V IEC 61010 1 conditions over voltage cat III pollution degree 2 Rated insulation voltage RMS basic insulation 1000 V EN 50178 conditions over voltage cat III pollution degree 2 Rated insulation v...
Page 25: ...ersions is shown hereafter in the following charts Figure 13 CT 200 maximum external shunt resistor Current version only Figure 14 CT 300 maximum external shunt resistor Current version only 30 40 50...
Page 26: ...T 200 CT 300 CT 400 User s Manual 26 Figure 15 CT 400 maximum external shunt resistor Current version only 20 30 40 50 60 70 80 90 100 110 80 100 120 140 160 180 200 Maximum Shunt Resistor IS mA CT 40...
Page 27: ...200 CT 300 CT 400 User s Manual 27 5 Mechanical Dimensions The mechanical dimensions of the CT 200 CT 300 and CT 400 case are hereafter presented all dimensions are in mm Figure 16 Mechanical drawing...
