3276 – Clamp On Probe

Hioki

High S/N characteristics enable the measurement of 10 mA order current waveforms

Wideband Current Probe for Oscilloscopes

Hioki

3276 – Clamp On Probe, DC -100MHz, 30 Arms

Note: Use optional Power Supply 3269 or 3272 to drive the current probe when power from the Memory HiCorder or oscilloscope is not available. Exercise care concerning offset drift when performing continuous measurement over extended periods of time.

Overview

Hioki wide frequency current probes are best-in-class current sensors for use with Memory HiCorders and high performance oscilloscopes. The 3276 offers a wide DC to 100 MHz bandwidth and 30A of continuous input, and applications include capturing transient current signals from switching power supplies, inverters, and motor controllers.
The probe is designed with a high permeability magnetic shield with low insertion loss to reduce derating that may result from increased sensor head heating caused by eddy currents, making it ideal for measuring current of low impedance circuits and waveforms that include high frequency components.
Use with an instrument with a high input impedance of 1 MΩ or higher.

Key Features

  • Waveform observation across a wide band from DC to MHz
  • High S/N characteristics enable the measurement of 10 mA order current waveforms (3273-50, 3276)
  • Directly connect to an oscilloscope’s BNC input terminal (*1)

*1: Connecting the probe’s metal BNC terminal to a Memory HiCorder’s plastic BNC terminal may distort or damage the plastic terminal. To avoid damage, please connect and disconnect the probe cable straight to the BNC terminal of the waveform monitoring equipment.

Frequency bandwidth DC to 100 MHz (-3 dB)
Rise time 3.5 ns or shorter
Noise level 2.5 mA rms max. (bandwidth limited to 20 MHz)
Continuous allowable input 30 A rms (requires derating at frequency)
Max. allowable peak input 50 A peak (non continuous)
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 30 A rms)
±2 % rdg. (DC, 45 to 66 Hz, 30 A rms to 50 A peak)
Output rate 0.1 V/A (The output of this probe is internally terminated)
Measurable conductors Insulated conductor
Core diameter φ 5 mm (0.20 in)
Power supply ±12 V ±0.5 V, 5.3 VA max.
Dimensions and mass 175 mm (6.89 in)W × 18 mm (0.71 in)H × 40 mm (1.57 in)D, 240 g (8.5 oz)
Sensor cable BNC terminal: 1.5 m (4.92 ft), Power cable: 1 m (3.28 ft)
Accessories Instruction manual ×1, Carrying case × 1