FaithTech FT-SCA series High precision current sensor

  • Medical equipment: scanner, MRI
  • Electric Power: converter, inverter
  • New energy: photovoltaic, wind energy
  • Automobiles: electric vehicles
  • Ship: electric driven ship
  • Measurement: verification and calibration
  • Industrial control: industrial motor drive, robot
  • Rail transit: high-speed trains, subways, trams and trolleybus
  • DC excitation system measurement

Description

FT-SCA  series high-precision current sensor is a current sensor that can measure DC, AC, pulse and various irregular waveforms under the condition that the primary side and secondary side are completely isolated. FT-SCA  series adopts multi-point zero flux technology to control the excitation flux, DC flux and AC flux in a zero flux closed loop, and realizes the detection of high-frequency ripple by constructing a high-frequency ripple induction channel, so that the sensor has relatively high gain and measurement accuracy in the full bandwidth range.

The FT-SCA  series is mainly used in the fields of metrological verification and calibration that require high accuracy, as well as power quality analysis, power analyzer, medical treatment, aerospace, rail transit and other fields that require high sensitivity, stability and reliability.

 

Multipoint zero magnetic flux technology

The magnetic core reaches the magnetic balance state by excitation. When the measuring current flows through the wire, breaking the magnetic balance, the flux gate will generate the excitation current, and the signal will drive the compensation coil after amplification, so that the magnetic flux in the magnetic core and the magnetic flux generated by the measuring current will cancel each other and remain in the "zero" state, that is, the so-called "zero flux" state.

How FaithTech Current Sensor works

 

Dimension

FaithTech FT_SCA Current Sensor Dimension 1

 

 

 

 

Specification

Model FT-SCA100 FT-SCA200 FT-SCA300 FT-SCA600 FT-SCA1000
Electrical performance Electrical performance
Rated DC current of primary side(IPN_DC ±100A dc ±200A dc ±300A dc ±600A dc ±1000A dc
Rated AC current of primary side*1(IPN 70.5A ac 141A ac 211.5A ac 423A ac 705A ac
Primary side overload current*2(IPM)(≤1min) ±150A dc ±300A dc ±360A dc ±720A dc ±1200A dc
Working voltage(VC ±14V~±16V
Power consumption current(IPWR ±50mA~±200mA ±50mA~±250mA ±50mA~±290mA ±30mA~±390mA ±60mA~±660mA
Current ratio (KN) (input: output) 1000:1 1500:1 1500:1 2000:1 2000:1
Rated output current (ISN) ±100mA ±133.333mA ±200mA ±300mA ±500mA
Measuring resistance(RM 0Ω~30Ω, nominal value20Ω 0Ω~20Ω, nominal value 15Ω 0Ω~20Ω, nominal value 15Ω 0Ω~10Ω, nominal value 7Ω 0Ω~8Ω, nominal value6Ω
Precision measurement Precision measurement
Accuracy *3(XG 10ppm
Linearity(εL 5ppm
Temperature stability(TC 0.2ppm/K
time-stability(TT 0.5ppm/month
Power supply anti-interference(TV 1ppm/V
Zero offset current(IO 1ppm@25ºC
Ripple current(IN 1ppm(DC-10Hz)
Dynamic response time(tr 1us(di/dt=100A/μs,increase to

90%IPN)

Current change rate(di/dt)(MIN) 100A/us
Frequency bandwidth(-3dB) DC-200kHz DC-200kHz DC-200kHz DC-100kHz DC-100kHz
Zero offset current(IOT ±2uA ±3uA ±5uA ±5uA ±5uA
Security features Security features
Isolation voltage/between primary side and secondary side(VD 2.5kV(50Hz,1min)
Transient isolation withstand voltage/between primary side and secondary side(VW 5kV(50us)
General characteristic General characteristic
Operating temperature range(TA -40℃~85℃
Storage temperature range(TS -45℃~85℃
Relative humidity 20%~80%RH
Threading hole diameter(mm) φ28 φ28 φ28 Φ40 Φ40
Weight 400g±40g 400g±40g 400g±40g 1000g±200g 1000g±200g

 

Model FT-SCA1500 FT-SCA2000 FT-SCA3000 FT-SCA5000
Electrical performance
Rated DC current of primary side(IPN_DC ±1500A dc ±2000A dc ±3000A dc ±5000A dc
Rated AC current of primary side*1(IPN 1057A ac 1410A ac 2115A ac 3525A ac
Primary side overload current*2(IPM)(≤1min) ±1600A dc ±2400A dc ±3300A dc ±6000A dc
Working voltage(VC ±22V~±26V
Power consumption current(IPWR ±60mA~±700mA ±60mA~±1020mA ±60mA~±1160mA ±60mA~±1560mA
Current ratio (KN) (input: output) 2500:1 25000:1 3000:1 4000:1
Rated output current (ISN) ±600mA ±800mA ±1000mA ±1250mA
Measuring resistance(RM 0Ω~5Ω, nominal value3Ω 0Ω~3Ω, nominal value2Ω 0Ω~3Ω, nominal value2Ω 0Ω~2Ω, nominal value1Ω
Precision measurement
Accuracy *3(XG 10ppm
Linearity(εL 5ppm
Temperature stability(TC 0.2ppm/K
time-stability(TT 0.5ppm/month
Power supply anti-interference(TV 1ppm/V
Zero offset current(IO 1ppm@25ºC
Ripple current(IN 1ppm(DC-10Hz)
Dynamic response time(tr 1us(di/dt=100A/μs,increase to

90%IPN)

Current change rate(di/dt)(MIN) 100A/us
Frequency bandwidth(-3dB) DC-100kHz
Zero offset current(IOT ±4μA ±5μA ±5μA ±4μA
Security features
Isolation voltage/between primary side and secondary side(VD 2.5kV(50Hz,1min) 5kV(50Hz,1min)
Transient isolation withstand voltage/between primary side and secondary side(VW 5kV(50us) 8kV(50us)
General characteristic
Operating temperature range(TA -40℃~85℃
Storage temperature range(TS -40℃~85℃
Relative humidity 20%~80%RH
Threading hole diameter(mm) Φ40 Φ90 Φ90 Φ121.5
Weight 700g±100g 4000g±1000g 5000g±1000g 12000g±1500g

Feature 

  • Adopt multi-point zero flux technology, with high precision, small zero offset and high linearity;
  • Current range: ±100A/±200A/±300A/±600A/±1000A/±1500A/±2000A/±3000A/±5000A;
  • High precision, current precision 10ppm;
  • With temperature compensation technology, the temperature stability is 0.2ppm/K;
  • AC/DC universal, which can measure AC, DC and pulse current;
  • Primary and secondary side isolation measurement;
  • No warm-up time;
  • Wide band measurement, with the maximum measurement bandwidth of 500kHz;
  • Low response time, minimum dynamic response time 1us

Model Options

Model Rated input Primary overload current transformation ratio Rated output of secondary side Bandwidth Accuracy Linearity Working power supply Diameter of hole
(A) (A) (A) (kHz) (ppm) (ppm) (V) (mm
FT-SCA100 ±100A ±150A 1000:1 ±100mA 200 10 5 ±15Vdc φ28
FT-SCA200 ±200A ±300A 1500:1 ±133.333mA 200 10 5 ±15Vdc φ28
FT-SCA300 ±300A ±360A 1500:1 ±200mA 200 10 5 ±15Vdc Φ28
FT-SCA600 ±600A ±720A 2000:1 ±300mA 100 10 5 ±15Vdc Φ40
FT-SCA1000 ±1000A ±1200A 2000:1 ±500mA 100 10 5 ±15Vdc Φ40
FT-SCA1500 ±1500A ±1600A 2500:1 ±600mA 100 10 5 ±24Vdc Φ40
FT-SCA2000 ±2000A ±2400A 2500:1 ±800mA 100 10 5 ±24Vdc Φ90
FT-SCA3000 ±3000A ±3300A 3000:1 ±1000mA 100 10 5 ±24Vdc Φ90
FT-SCA5000 ±5000A ±6000A 4000:1 ±1250mA 100 10 5 ±24Vdc φ121.5

Datasheet

Software & Manual

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