Current Probe | CLAMP ON PROBE 3274

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 • Waveform 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.

Model No. (Order Code)

3274	DC to 10 MHz, 150 Arms

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.

Insulated conductor

Basic specifications (Accuracy guaranteed for 1 year, Post-adjustment accuracy guaranteed for 6 months)

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 *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