Hioki Clamp on Probe 3274

Wide band DC to 10 MHz/150A AC/DC Current Probe for Oscilloscopes

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.

Use optional power supply 3269 or 3273 to drive the current probe when power from the Memory HiCorder or oscilloscope is not available.

Directly observe current waveforms up to 150 A in applications such as power device and inrush current monitoring in a wide DC to 10 MHz frequency bandwidth
• Connects directly to an oscilloscope’s BNC input terminal
• Connects directly to a Hioki Memory HiCorder to deliver waveform monitoring
• Optional power supply available for use with oscilloscopes that do not provide probe power

Basic specifications (accuracy guaranteed for 1 year)

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)
Max. rated voltage to earth 600 V CAT II, 300 V CAT III (insulated wire)
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.
Accessories 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)
Accessories Power cord ×1, Instruction manual ×1, Spare fuse ×1

■ Power Supply 3269 (basic specifications)

Compatible models Model 3273-50, 3274, 3275 or 3276 × 4 units
Note: Also up to 4 units for the discontinued Model 3273
Power supply 100 V to 240 V AC (free) 50/60 Hz 170 VA max.
Dimensions and mass 80 mm (3.15 in) W × 119 mm (4.69 in) H × 200 mm (7.87 in) D, 1.1 kg (38.8 oz)
Accessories Instruction manual ×1, Power cord ×1

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