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SensorsX SX-ECFNA-300ALDGH 300A Fluxgate Current Transducer
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SX-ECFNA-300ALDGH Series

SX-ECFNA-300ALDGH Series

The SensorsX SX-ECFNA-300ALDGH series is a high-precision current transducer that uses fluxgate technology to measure DC, AC, pulsed and non-sinusoidal currents. Galvanic isolation makes it suitable for precision current measurement in industrial systems. A nominal ±300 A DC input produces a proportional ±150 mA output at a conversion ratio of 1:2,000. It offers accuracy better than 0.05% at 25 °C and a DC–100 kHz bandwidth (−3 dB) for tracking changing currents. The transducer operates from a dual ±12 V to ±15 V supply, with a green LED indicating normal operation.

  • Nominal Input: ±300 A DC; 212 A AC RMS.
  • Measuring Range: −440 to +440 A at ±15 V with a 10 Ω load.
  • Output / Power: ±150 mA; ratio 1:2,000; dual ±12 V to ±15 V supply (±5%).
  • Accuracy: <0.05% at 25 °C; linearity ±0.02% FS over 0 to ±300 A.
  • Dynamic Performance: DC–100 kHz (−3 dB); response ≤1 µs at 100 A/µs, 10%–90%.
  • Stability: Zero offset <±10 µA at 25 °C; output thermal drift <10 ppm 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: Ø20 mm aperture; weight 110 g.
Ordering Code
$165.00

Product Overview

The SensorsX SX-ECFNA-300ALDGH current transducer uses fluxgate technology to measure DC, AC, pulsed and non-sinusoidal currents with galvanic isolation. It provides a secondary current proportional to the primary current at an output-to-input ratio of 1:2,000, with a nominal output of ±150 mA for a nominal DC input of ±300 A. The transducer requires a dual ±12 V to ±15 V supply and provides a frequency bandwidth of DC to 100 kHz (−3 dB). A green LED indicates normal operation.

Main Features

  • Accuracy: <0.05% at 25 °C.
  • Frequency bandwidth: DC–100 kHz (−3 dB).
  • Insulation withstand voltage: 5 kV AC (50 Hz, 1 min).
  • Response time: ≤1 µs.
  • Output current thermal drift: <10 ppm.
  • Green LED operating status indicator.

Product Application

Typical Applications

Precision DC and AC current measurement Pulsed and non-sinusoidal current monitoring Galvanically isolated current measurement in industrial systems

Technical Data

Measurement
Measuring Principle Fluxgate; galvanically isolated DC, AC, pulsed and non-sinusoidal current measurement
Primary Nominal DC Current ±300 A
Primary Nominal AC RMS Current 212 A
Primary Measuring Range −440 to +440 A (±15 V supply, 10 Ω measuring resistance)
Output-to-Input Ratio 1:2,000
Power & Output
Supply Voltage Dual (bipolar) ±12 V to ±15 V (±5%)
Current Consumption 20 mA + primary current / 2,000
Secondary Nominal Output Current ±150 mA
Measuring Resistance 0–21 Ω at ±12 V; 0–40 Ω at ±15 V (at ±300 A maximum)
Secondary Coil Resistance 48 Ω at 25 °C
Insulation Withstand Voltage 5 kV AC, 50 Hz, 1 min
Mechanical & Connection
Aperture Ø20 mm
Electrical Connection 4 terminals: positive supply, negative supply, current output and ground
Weight 110 g
Performance
Accuracy <0.05% at 25 °C
Linearity ±0.02% FS over 0 to ±300 A
Zero Offset Current <±10 µA at 25 °C
Zero Offset Thermal Drift <±10 µA at zero primary current, −40 to +85 °C
Output Current Thermal Drift <10 ppm at −40 to +85 °C
Response Time ≤1 µs at 100 A/µs, 10%–90%
Frequency Bandwidth DC–100 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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