CT6877A – AC/DC Current Sensor


Product Description


CT6877A – AC/DC Current Sensor. Cable length: 3 m (9.84 ft.)
CT6877A-1 – 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 CT6877A has a frequency bandwidth of DC to 1 MHz and a rated current of 2000 A. It can easily handle large current measurements of electric vehicles such as EVs and HEVs. The CT6877A is also 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

  • High accuracy (amplitude): [DC]±0.048 %, [50 Hz/60 Hz]±0.048 %
  • High accuracy (phase): [50 Hz/60 Hz]±0.08°
  • Measures high-current up to 2000 A for EV, HEV and other electric vehicles
  • Improved noise resistance performance through a stronger shield lets you accurately measure current buried in noise
  • High accuracy measurement realized through flat frequency characteristics and CMRR performance
  • More enhanced environmental resistance performance than ever before lets you measure in -40 to 85°C situations
  • Superior frequency characteristics of DC to 1 MHz (amplitude)
  • Meet a wide range of applications from measuring battery charge/discharge to the secondary side of inverters in photovoltaic power generation and fuel cell evaluation, etc.
  • Monitor waveforms when paired with oscilloscopes or Memory HiCorders and Sensor Unit
Rated current 2000 A AC/DC
Max. allowable input Within the derating range, (within the specified range up to ±3200 Apeak )
Frequency characteristics Amplitude: DC to 1 MHz, Phase: DC to 700 kHz
Basic accuracy (DC, 45 Hz ≤ f ≤ 66 Hz) Amplitude: ±0.04 % rdg. ±0.008 % f.s., Phase: ±0.08°
Output voltage rate 1 mV / A rated (This device outputs AC+DC voltage via the Sensor Unit)
Max. rated voltage to earth 1000 V AC/DC (50/60 Hz, CAT III )
Core diameter φ 80 mm (3.15 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 9.5 VA max. (at 2000 A/55 Hz, ±12 V power requirement)
Dimensions and mass 229 mm (9.02 in)W × 232 mm (9.13 in)H × 112 mm (4.41 in)D, CT6877A: 5 kg (176.4 oz), cable length 3 m (9.84 ft), CT6877A-1: 5.3 kg (186.9 oz), cable length 10 m (32.81 ft)
Included accessories Instruction Manual ×1, Mark bands ×6, Operating Precautions ×1