AC/DC CURRENT SENSOR CT6877A
Supports Current Measurement of Inverters with High Current and High Speed
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.
- Combined accuracy with HIOKI power analyzer PW8001, PW6001 and PW3390 is specified. For details of combined accuracy, refer to the instruction manual.
- 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
Model No. (Order Code)
|CT6877A||Cable length: 3 m (9.84 ft.)|
|CT6877A-1||Cable length: 10 m (32.81 ft.)|
For applications in EV and HEV testing
Most large currents are divided into two to four wires. In the past, it was necessary to measure wires individually using multiple current sensors due to the devices’ insufficient aperture size and current ratings. The optional Sensor Unit CT9557 provided functionality for adding together the sensors’ measured values in such setups and outputting the result as a single signal.
Unparalleled technology driving the evolution of current measurement
High-accuracy sensors uses the "zero flux method (flux gate detection type)." High-frequency currents are detected with the winding (CT method), and DC to low frequency currents are detected using a "flux gate."
Wide frequency band
The CT6877A has a frequency bandwidth of DC to 1 MHz, which is top-class for a 2000 A rated pass-through sensor. In combination with the Power Analyzer PW8001, high frequency and low power factor power can be measured accurately.
Guaranteed accuracy when used in combination with a power analyzer
Hioki is able to guarantee the combined accuracy of the products when used together for greater customer peace of mind. Used in conjunction with a high-precision power meter such as Hioki’s Power Analyzer PW8001, the CT6877A can measure currents with a high degree of accuracy.
Automatic detection capability for even greater convenience
|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, Sensor Unit CT9555, CT9556, CT9557, or 3CH CURRENT UNIT U8977|
|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|
External power supply, Connection cord (5)
Compatible products PW3335, PW3336, PW3337, MR6000, MR8847A, MR8827, MR8740T, MR8740, MR8741, MR8870, MR8880, MR8875
Conversion/Extension cables (2)
The CT9902 connects up to 2 cables in series