Best-in-class Measurement Bandwidth with High Accuracy
Description
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 CT6904A-2 has a frequency bandwidth of DC to 4 MHz (Model CT6904A-3 is DC to 2 MHz) and a rated current of 800 A. It is used in research and development fields such as loss measurement of high-frequency reactors, wireless charging systems, and EV inverter motors.
Use with an instrument with a high input impedance of 1 MΩ or higher.
Key Features
- Combined accuracy with HIOKI power analyzer PW8001 and PW6001 is specified. For details of combined accuracy, refer to the instruction manual.
- 800 A (rms) rated for measurement of large currents
- CT6904A-2: DC to 4 MHz (±3 dB), CT6904A-3: DC to 2 MHz (±3 dB) wide measurement frequency range
- 120 dB (100 kHz) high Common-Mode Rejection Ratio (CMRR)
Model No. (Order Code)
| CT6904A-2 | Build-to-order, Cable length: 3 m (9.84 ft.) |
|---|---|
| CT6904A-3 | Build-to-order, Cable length: 10 m (32.81 ft.) |
Specification
Accuracy guaranteed: 1 year
| Rated current | 800 A AC/DC |
|---|---|
| Max. allowable input | Within the derating range, However, up to ±1200 A peak is allowable if within 20 ms. (design value) |
| Frequency bandwidth | Amplitude: DC to 4 MHz (CT6904A-2), DC to 2 MHz (CT6904A-3)
Phase: DC to 1 MHz |
| Linearity | ±12.5 ppm Typical (23°C (73°F)) |
| Offset voltage | ±10 ppm Typical (23°C (73°F), no input) |
| Basic accuracy | DC (Amplitude: ±0.030 % rdg. ±0.009 % f.s., No phase specification)
45 Hz ≤ f ≤ 65 Hz (Amplitude: ±0.025 % rdg. ±0.009 % f.s., Phase: ±0.08°) |
| Output voltage rate | 2 mV / A rated (This device outputs AC+DC voltage via the Sensor Unit) |
| Max. rated voltage to earth | 1000 V CAT III |
| Core diameter | φ 32 mm (1.26 in) |
| Operating temperature, humidity | -10°C to 50°C (14°F to 122°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 | 7 VA Max. (800 A/55 Hz measurement, with a power supply of ±12 V) |
| Dimensions and mass | 139 mm (5.47 in)W × 120 mm (4.72 in)H × 52 mm (2.05 in)D, CT6904A-2: 1.15 kg (40.6 oz), cable length 3 m (9.84 ft), CT6904A-3: 1.45 kg (51.1 oz), cable length 10 m (32.81 ft) |
| Included accessories | Instruction Manual ×1, Carrying case ×1, Color labels (for channel identification) ×1, Operating Precautions ×1 |
