Hioki flat bandwidth current probes are best-in-class current sensors for use with Memory HiCorders and high performance oscilloscopes. The 3274 supports wide DC to 10 MHz bandwidth signals and 150 A of continuous high input, letting you capture transient current signals from switching power supplies, inverters, and motor controllers. The probe is designed with a high permeability magnetic shield to reduce the effects of electric fields, making it ideal for measuring low currents or nearby high-current lines.
Key Features
- Waveform observation across a wide band from DC to MHz
- Connects directly to oscilloscope or Memory HiCorder BNC input terminal (*1)
Basic specifications
Accuracy guaranteed: 1 year
| Frequency bandwidth |
DC to 10 MHz (-3 dB) |
| Rise time |
35 ns or shorter |
| Noise level |
25 mA rms max. (bandwidth limited to 20 MHz) |
| Continuous allowable input |
150 A rms (requires derating at frequency) |
| Max. allowable peak input |
300 A peak (non continuous)
500 A peak (pulse width: 30 μs or shorter) |
Amplitude accuracy
(30 min. after power-on, after degaussing and zero-adjustment) |
±1.0 % rdg. ±1 mV f.s. (DC, 45 to 66 Hz, 0 to 150 A rms)
±2.0 % rdg. (DC, 45 to 66 Hz, 150 A to 300 A peak) |
| Output rate |
0.01 V/A
(The output of this probe is internally terminated) |
| Measurable conductors |
Insulated conductor |
| Core diameter |
φ 20 mm (0.79 in) |
| Power supply |
±12 V ± 1 V, 5.5 VA max. |
| Dimensions and mass |
176 mm (6.93 in)W × 69 mm (2.72 in)H × 27 mm (1.06 in)D, 500 g (17.6 oz)
Sensor cable BNC terminal: 2 m (6.56 ft), Power cable: 1 m (3.28 ft) |
| Included accessories |
Instruction manual ×1, Carrying case × 1 |
| Included accessories |
Instruction manual ×1, Carrying case × 1 |
| Included accessories |
Instruction manual ×1, Carrying case × 1 |
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