Wide band DC to 10 MHz/150A AC/DC Current Probe for Oscilloscopes
CLAMP ON PROBE 3274
Model No. (Order Code)
3274 | DC to 10 MHz, 150 Arms |
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Note: Use the Power Supply 3269/3272 for general measurements or when power is not available from the Memory Hicorder. When performing continuous measurements, be aware of offset voltage drift.


Description
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 150A of continuous high input, and is ideal for capturing transient current signals from switching power supplies, inverters, and motor controllers.
Key Features
• Highly accurate observation across a wide band from DC to MHz
• Connects directly to oscilloscope or Memory HiCorder BNC input terminal *1
*1 Connecting the device’s metal BNC terminal to a Memory HiCorder’s plastic BNC terminal may damage the plastic terminal or cause it to become misshapen.
Basic specifications (Accuracy guaranteed for 1 year, Post-adjustment accuracy guaranteed for 6 months)
Frequency bandwidth | DC to 10 MHz (-3 dB) |
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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 *Device output is terminated internally. Use with a device having a 1 MΩ input resistance or higher. |
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) |
Accessories | Instruction manual ×1, Carrying case × 1 |
Catalogs
Catalog: CURRENT PROBE series CT6700, CT6701, 3273-50, 3274, 3275, 3276 
Technical Notes
Developing a Thin-film Low-noise Hall Element for Use in Current Probes 
High-precision, Wideband, High Stable Current Sensing Technology 
Declaration of Conformity
CLAMP ON PROBE 3274 [121KB] 
There are no drivers, firmware or software available for this product.