When faced with heavy currents at a power site, both safety and data clarity are equally important. Fluke has designed the i400s, which falls under the category of Digital Multimeter accessories and analysis equipment, to bridge the gap between power and imaging.
Unlike the standard i400 model, this clamp provides a voltage output (mV) instead of a current output, allowing your oscilloscope to directly convert the current into a waveform.
This device features a range selection switch that allows you to toggle between high accuracy (10mV/A for currents up to 40 amps) and high capacity (1mV/A for currents up to 400 amps).
Its body is covered with Fluke's renowned rubber coating to withstand potential impacts and prevent slipping in hand.
The golden feature of the i400s is that it converts current signals to voltage without the need for batteries; hence it is always ready to operate, just like a soldier on standby at the front lines of troubleshooting!
Features and Benefits of Fluke i400s AC Current Clamp
- Measures and displays AC current up to 400 amps in two selectable ranges
- Equipped with a BNC connector for connection to oscilloscopes and ScopeMeter devices
- Has the highest industrial safety rating: CAT IV 600 V / CAT III 1000 V
- Precise voltage output (mV) for harmonic analysis and power quality
- Ergonomic design with protective casing for durability in the toughest working conditions
- No need for power supply or battery (Passive Sensor)
Technical Specifications
| Feature | Value / Description |
|---|---|
| AC Current Ranges | 40A and 400A |
| Output Signal | 10mV/A (range 40A) / 1mV/A (range 400A) |
| Basic Accuracy | 2% + 0.06A (45 Hz to 400 Hz) |
| Frequency Bandwidth | 5 Hz to 10 kHz |
| Safety Standard | CAT IV 600V / CAT III 1000V |
| Connection Type | BNC Connector |
| Maximum Conductor Diameter | 32mm (1.25 inch) |
FAQs about Fluke i400s AC Current Clamp
What is the functional difference between i400s and i400?
The i400 has a milliamperes output and is made for multimeters, while the i400s features a millivolts output and a BNC plug specifically for oscilloscopes and waveform display.
Can the i400s be used to measure DC current?
No, this model is based on a current transformer (CT) and is only applicable for alternating current (AC).
Does this clamp require specific calibration?
No, the i400s is a passive sensor and its accuracy remains stable under standard conditions, unless serious physical damage occurs to the clamp jaws.
Conclusion
The Fluke i400s is the first choice for professionals who seek CAT IV safety along with visual current analysis.
This flexible (in terms of usability) and robust (in terms of design) clamp ensures that you can observe the most complex behaviors of AC current in the safest possible manner.
