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SensorsX SX-ECFNA-500ALFBH 500A Fluxgate Current Transducer
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SX-ECFNA-500ALFBH Series

SX-ECFNA-500ALFBH Series

The SensorsX SX-ECFNA-500ALFBH series is a high-precision fluxgate current transducer for measuring DC, AC, pulsed and non-sinusoidal currents with galvanic isolation. It accepts a nominal ±500 A DC or 353 A AC RMS input, with a measuring range of −900 to +900 A. A conversion ratio of 1:2,000 provides a nominal ±250 mA current output at ±500 A DC. Accuracy is 100 ppm at 25 °C, with a DC–150 kHz frequency bandwidth (−3 dB). The transducer operates from a dual ±15 V supply, and a green LED indicates normal operation.

  • Nominal Input: ±500 A DC; 353 A AC RMS.
  • Measuring Range: −900 to +900 A.
  • Output / Power: ±250 mA; ratio 1:2,000; dual ±15 V supply (±5%).
  • Accuracy: 100 ppm at 25 °C; linearity 20 ppm over 0 to ±500 A.
  • Dynamic Performance: DC–150 kHz (−3 dB); response ≤1 µs at 100 A/µs, 10%–90%.
  • Stability: Zero offset: 3 µA at 25 °C; offset temperature coefficient: 5 µA at zero input over −40 to +85 °C.
  • Isolation: 5 kV AC withstand voltage, 50 Hz, 1 min.
  • Temperature: Operating −40 to +85 °C; storage −40 to +125 °C; primary conductor ≤100 °C.
  • Construction: Ø30 mm aperture; weight 253 g.
Ordering Code
$195.00

Product Overview

This high-precision current transducer uses fluxgate technology to measure DC, AC, pulsed and non-sinusoidal currents with galvanic isolation. Its nominal input is ±500 A DC or 353 A AC RMS. A conversion ratio of 1:2,000 provides a nominal ±250 mA output at ±500 A DC input. It offers 100 ppm accuracy at 25 °C and a DC–150 kHz frequency bandwidth (−3 dB). The transducer operates from a dual ±15 V supply, with a green LED indicating normal operation.

Main Features

  • Accuracy: 100 ppm at 25 °C.
  • Frequency bandwidth: DC–150 kHz (−3 dB).
  • Insulation withstand voltage: 5 kV AC (50 Hz, 1 min).
  • Response time: ≤1 µs at 100 A/µs, 10%–90%.
  • Zero offset current: 3 µA at 25 °C.
  • Green LED operating status indicator.

Product Application

Typical Applications

Electrical test and measurement instruments Medical equipment Precision current measurement and calibration systems
Laboratory testing and measurement High-precision power supplies Electric and hybrid vehicles

Technical Data

Measurement
Measuring Principle Fluxgate; galvanically isolated DC, AC, pulsed and non-sinusoidal current measurement
Primary Nominal DC Current ±500 A
Primary Nominal AC RMS Current 353 A
Primary Measuring Range −900 to +900 A
Output-to-Input Ratio 1:2,000
Power & Output
Supply Voltage Dual (bipolar) ±15 V (±5%)
Current Consumption 15 mA + primary current / 2,000
Secondary Nominal Output Current ±250 mA
Measuring Resistance 0–34 Ω at ±500 A maximum; 0–10 Ω at ±900 A maximum (±15 V supply)
Secondary Coil Resistance 16 Ω at 85 °C
Insulation Withstand Voltage 5 kV AC, 50 Hz, 1 min
Mechanical & Connection
Aperture Ø30 mm
Electrical Connection 4 terminals: positive supply, negative supply, current output and ground
Weight 253 g
Performance
Accuracy 100 ppm at 25 °C
Linearity 20 ppm over 0 to ±500 A
Zero Offset Current 3 µA at 25 °C
Offset Temperature Coefficient 5 µA at zero primary current, −40 to +85 °C
Response Time ≤1 µs at 100 A/µs, 10%–90%
Frequency Bandwidth DC–150 kHz (−3 dB)
Tracked Current Rate of Change >100 A/µs
Environmental Conditions
Operating Temperature −40 to +85 °C
Storage Temperature −40 to +125 °C
Primary Conductor Temperature Cable or busbar temperature must not exceed 100 °C

 

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