3275 – Clamp On Probe

Hioki

Wideband Current Probe for Oscilloscopes

Hioki

3275 – Clamp On Probe

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 flat bandwidth current probes are best-in-class current sensors for use with Memory HiCorders and high performance oscilloscopes. The 3275 supports wide DC to 2 MHz bandwidth signals and 500A of continuous high input. The probe is designed with an electrostatic shield to reduce the effects of electric fields, making it ideal for measuring in environments in which the probe will be subjected to the effects of nearby magnetic fields, such as locations with high-voltage switching control equipment such as an inverter or motor.
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
  • 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 2 MHz (-3 dB)
Rise time 175 ns or shorter
Noise level 25 mA rms max. (bandwidth limited to 20 MHz)
Continuous allowable input 500 A rms (requires derating at frequency)
Max. allowable peak input 700 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 150 A rms)
±2.0 % rdg. (DC, 45 to 66 Hz, 500 A to 700 A peak)
Output rate 0.1 V/A
(The output of this probe is internally terminated)
Measurable conductors Insulated conductor
Core diameter φ 20 mm (0.79 in)
Power supply ±12 V ±0.5 V, 7.2 VA max.
Dimensions and mass 176 mm (6.93 in)W × 69 mm (2.72 in)H × 27 mm (1.06 in)D, 520 g (18.3 oz)
Sensor cable BNC terminal: 2 m (6.56 ft), Power cable: 1 m (3.28 ft)
Accessories Instruction manual ×1, Carrying case × 1