| Customization: | Available |
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| Type: | Electromagnetic |
| Output Signal Type: | Analog Output |
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The AC side of the inverter basically uses a current sensor, because the closed-loop sensor has high accuracy, and the output of the AC side sensor is generally involved in the control, so the accuracy cannot be too low.
In recent years, due to the development of power electronic devices and the application of new technologies such as frequency conversion, inverter, and chopper, the waveforms of voltage and current are no longer standard sine waves or DC. The traditional transformer is obviously not suitable for the measurement of this waveform. Therefore, many countries have successively carried out the research and development of non-contact current and voltage sensors, especially Hall current and voltage sensors are regarded as the representative of this technology.
Hall sensor is suitable for isolation and conversion of complex signals such as AC, DC and pulse. Through the principle of Hall effect, the converted signal can be directly collected and accepted by various acquisition devices such as AD, DSP, PLC, and secondary instruments. Small size, long life, easy installation, fast response time, wide current measurement range, high accuracy, strong overload capacity, good linearity, and strong anti-interference ability.
HALL closed-loop current sensor
★ Technical features:
(1) Bandwidth
(2) High measurement accuracy
(3) Fast response
(3) Low-temperature drift
(4) very good nonlinear distortion
(5) No insertion loss
★ working principle:
The magnetic field generated by the primary current IP and the magnetic field generated by the output current IS on the compensation coil are equal in magnitude and opposite in direction. The HALL induction device and processing circuit together with the compensation coil, output the current IS, and the output current IS accurately reflect the magnitude and direction of the measured current. Since the magnetic core works in the state of zero magnetic flux, the non-linearity and remanence of the magnetic core have no influence on the accuracy of the sensor, so the HALL closed-loop sensor has high accuracy and small nonlinear distortion.
| AHBC-LF | |
| Item | Parameter |
| Current Measure Range | 3000A |
| Rated Input Current | 2000A |
| Rated Output Current | 400mA |
| Turn Ratio | 1:5000 |
| Accuracy | 0.5 |
| Supply Power Voltage | DC±15V~±24V |
| Current Consumption | 20mA+1s |
| Zero offset Current | ±0.2mA |
| Response time | ≤1us |
| Linearity | ≤0.05%FS |
| Insulation voltage | 3.5kV/50Hz/1min |
| Bandwith(-3dB) | 0~150kHz |
| Secondary Resistance | 26Ω |
| Working Temperature | -40'ºC~85'ºC |
| Storage Temperature | -40°ºC~85ºC |
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