CT6872 – AC/DC Current Sensor


Low-current Model of 50 A rating, with Wideband and High Accuracy


CT6872 – AC/DC Current Sensor. Cable length: 3 m (9.84 ft.)
CT6872-01 – AC/DC Current Sensor. Cable length: 10 m (32.81 ft.)


Hioki’s pass-through type AC/DC current sensors can be connected directly to Hioki Power Analyzers and Memory HiCorders. Also, it can be connected to Power Meters, Oscilloscopes, DMMs, etc. by using an optional sensor unit.

The CT6872 has a frequency bandwidth of DC to 10 MHz and a rated current of 50 A. It is used for R&D, quality evaluation, manufacturing, and maintenance in markets such as wireless charging systems, inverter motors for industrial equipment, power conditioners for PV, and quick charging facilities for EVs.

Use with an instrument with a high input impedance of 1 MΩ or higher.

Key Features

  • Super high accuracy (amplitude): [DC]±0.032 %, [50 Hz/60 Hz]±0.037 %
  • Super high accuracy (phase): [50 Hz/60 Hz]±0.05°
  • Wide-bandwidth DC to 10 MHz excellent frequency characteristics
  • Applications in the fields of electric and hybrid electric vehicles
  • Wide operating temperature range(-40°C to 85°C) fit for automobile applications
  • Ideal for evaluation of solar power generation and fuel cells to measure battery charge and discharge and the secondary side of inverters
  • For observing waveforms to be used with the oscilloscopes or Memory HiCorders (use with Sensor Unit)
Rated current 50 A AC/DC
Max. allowable input Within the derating range, up to ±150 A peak (design value) allowed at 40°C or less for 20 ms or less
Frequency bandwidth Amplitude: DC to 10 MHz
Phase: DC to 1 MHz
Amplitude and Phase accuracy DC (±0.03% rdg. ±0.002% f.s., no phase specification)
45 Hz ≤ f ≤ 66 Hz (±0.03% rdg. ±0.007% f.s., ±0.05°)
Specified up to 1 MHz
Output voltage rate 40 mV/A rated (This device outputs AC+DC voltage via the Sensor Unit)
Max. rated voltage to earthe 1000 V CAT III
Core diameter φ 24 mm (0.94 in)
Operating temperature, humidity -40°C to +85°C (-40°F to 185°F), 80% RH or less (with no condensation)
Power supply Power suppled via the Power Analyzer PW8001, PW6001, PW3390, or Sensor Unit CT9555, CT9556, CT9557
Max. rated power 4 VA max. (at 50 A/55 Hz, ±12 V power requirement)
Dimensions and mass 70 mm (2.76 in)W × 100 mm (3.94 in)H × 53 mm (2.09 in)D, CT6872: 370 g (13.1 oz), cable length: 3 m (9.84 ft), CT6872-01: 690g (24.3 oz), cable length 10 m (32.81 ft)
Included accessories Instruction Manual ×1, Mark bands ×6, Operating Precautions ×1

Compatible models

Compatible models CT6872
Power Analyzer
PW8001, PW6001, PW3390
Power Analyzer
Attention (Requires CT9901)
Power HiTester
3193 series
Attention (Requires CT9901)
Current Unit
Attention (Requires the 9318, CT9901)
3CH Current Unit U8977 OK