Product Details
3274 Current Clamp AC/DC
DC to 10MHz AC/DC Current Clamp

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Category:Clamp On Sensors

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

Even with the wide DC to 10 MHz frequency band, current waveforms up to 150 A can be directly observed in applications such as power device and power-on in-rush current monitoring Connects directly to oscilloscope BNC input terminal Connects directly to the Memory HiCorder to provide waveform monitoring An optional power supply is available for use with oscilloscopes that do not provide probe power

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

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 (use with a device having a 1 MΩ input resistance or higher)

Core diameter

φ 20 mm (0.79 in)

Power supply

12 V 0.5 V, 5.5 VA max. (at max. current measurement)

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), Power plug: FFA.0S.304.CLAC42Z / LEMO inc.


Instruction manual 1, Carrying case 1

■ Power Supply 3272 (basic specifications)

Compatible models

Model 3273-50, 3274, 3275 or 3276 1 unit. (One sensor only)

Note: May be used with up to 2 units of Model 3273 (not -50 type), and up to 2 units of Models 3273-50, 3274, 3275 or 3276 on condition that the measurement current is sufficiently low. Please check with your HIOKI distributor.

Power supply

100 V or 120/ 220/ 240 V AC (specify when ordering), 50/60 Hz 20 VA max.

Dimensions and mass

73 mm (2.87 in) W 110 mm (4.33 in) H 186 mm (7.32 in) D, 1.1 kg (38.8 oz)


Power cord 1, Instruction manual 1, Spare fuse 1

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