Current probes

TR3040A

40A/30MHz current probes

Tronovo angstrom current probes are designed with an open design that allows the current probe to be easily connected and disconnected from the conductor, allowing for accurate measurement of DC and AC signals by simply clamping the wire. We offer a wide range of models to choose from, with a maximum bandwidth of 100MHz and the ability to measure currents from 50mA to 40A.

Features:
• Bandwidth: DC~30MHz
• Measurable current range: 50mA to 40A  
• AC/DC measurement of AC or DC waveforms
• Clamp opening eliminates the need to disconnect the circuit under test
• Current conversion ratio: 50mV/A
• Narrow jaw design, easy to use in dense and tight spaces
• Zero Adjustment: Aligns the baseline position of the probe
• Degaussing function: eliminates DC measurement interference  
• External power supply, 5V power adapter  
• Universal interface, compatible with BNC interface oscilloscopes

Basic AC/DC probe

The TR3040A has become the benchmark for high-current applications with a bandwidth of 30MHz and an effective value of 40A DC/28A AC (Figure 12). The conversion ratio of 50mV/A supports the peak current analysis of power electronics and new energy systems. Compatible with oscilloscopes of various brands through standard BNC interface, setting DC coupling and 1MΩ impedance, stretching opening design simplifies conductor installation process.

Pincer opening

The clamp-shaped opening design simplifies the high-current test: lightly press the handle to open the 4.5mm card slot, put in the wire and lock it, and continuously operate to reduce the high-voltage risk of the new energy inverter or charging pile. The long and narrow body reduces the occupation of installation space, the 4.5mm conductor compatibility optimizes the clamping accuracy, and with the accuracy of 2%, the current transient can still be accurately captured in the 40A DC scenario, thus improving the troubleshooting efficiency of on-board equipment and power electronics.

Zeroing and degaussing

After fixing the probe, fine-tune the ZERO knob to compensate the drift caused by DC. The DEGAUSS function clears the saturation magnetization of the iron core and maintains the accuracy of ± 2%. This combination is particularly critical in the continuous operation of the 28A AC of the new energy inverter. Through the "degaussing-zeroing" double calibration (operation interval ≤ 10 minutes), the baseline deviation caused by self-heating is suppressed, and the millimeter-level current resolution of the charging pile efficiency test is guaranteed.

Waveform test

Whether it is testing the oscilloscope's own correction signal or the high-frequency square wave output by the signal generator, it can ensure that the flatness error of the rising/falling edge of the square wave is less than 3%, even in the face of the high-frequency square wave, the waveform details can be accurately restored to avoid ringing or overshoot distortion.

ModelTR3040A
bandwidth30MHz
Rise time≤12ns
Enter the typeAC/DC
Precision士2%rdg.
Current conversion ratio50mV/A
Resolution15mA
DC maximum40A
Communicate valid values28A
Maximum pulse current50A(TP≤10uS)
Maximum operating voltage400V  CATⅠ
Noise≤1mVrms
Linearity±1%
Delay time20nS
Jaw diameterØ4.5mm
Cable length130cm
Interface typeBNC
Power supplyDC 5V/2A adapter
Operating temperature0°C~+40°C
Operating humidity85%RH
Storage temperature-10~+45°C
Store humidity90%RH
Weight0.2kg
Dimensions230X45.5X24.5mm

There are currently no application cases available

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Customer
Customer service

contact information

Suzhou

address:Building 9, No. 269, Xinfeng Road, Xukou Town, Wuzhong District, Suzhou, China

Telephone:0512-66559708

Technical support

If you have any other questions, you can contact us by email

Contact Email

marketing@tronovo.com