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8971 - Current Unit

8971 - Current Unit
8971 - Current Unit
8971 - Current Unit
8971 - Current Unit
8971 - Current Unit
8971 - Current Unit
8971 - Current Unit
8971 - Current Unit
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Product number: 8971
Length: 196.5 mm
Width: 106 mm
Height: 19.8 mm
Weight: 0.25 kg

Product information 8971 - Current Unit


Typical Applications

  • Include motor current analysis
  • Inverter testing
  • Power electronics development 
  • Investigation of switching and load currents 

Technical Specifications 

  • 2-channel current measurement input for optional current sensors 
  • Input connector: PL23 sensor connector (via conversion cable 9318) 
  • Input impedance: 1 MΩ 
  • A/D resolution: 12-bit 
  • Highest sampling rate: 1 MS/s (simultaneous sampling across 2 channels) 
  • Frequency characteristics: DC to 100 kHz (–3 dB) 
  • Measurement accuracy: ±0.65% f.s. 
  • RMS accuracy: ±1% f.s. (DC, 30 Hz to 1 kHz), ±3% f.s. (1 kHz to 10 kHz)
  • Maximum rated voltage to earth: 300 V AC/DC

The 8971 Current Unit is a 2-channel current measurement module for the memory recorders MR6000, MR6000-01, MR8847A, MR8848, MR8827, MR8740 and MR8740T. It enables precise acquisition of current waveforms using compatible Hioki current sensors connected to dedicated sensor inputs.

The module supports simultaneous sampling of up to 1 MS/s across two channels and uses 12-bit A/D conversion for accurate waveform recording. With a frequency bandwidth of DC to 100 kHz (–3 dB), it is suitable for detailed current analysis in power electronics, inverter systems and industrial drive applications.

Measurement ranges depend on the connected current sensor and selectable scaling settings. Typical full-scale ranges span from 2 A up to 2000 A depending on the sensor model used. 

Supported current sensors include: 9272-05, CT6841A, CT6843A, CT6844A, CT6845A, CT6846A, CT6862-05, CT6863-05, CT6872, CT6872-01, CT6873, CT6873-01, CT6875A, CT6875A-1, CT6876A, CT6876A-1, CT6904A, CT6904A-1, CT6904A-2 and CT6904A-3. 

Sensors are connected via the supplied Conversion Cable 9318. Depending on the sensor type, additional adapters such as CT9901 or CT9900 may be required. 

Compatible memory recorders
  • MR6000
  • MR6000-01
  • MR8847A 
  • MR8848
  • MR8827
  • MR8740
  • MR8740T
  • 8971 Current Unit 
  • 2x Adapterkabel 9318

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