The advantages of high-precision Hall current sensors.

(1) Non-contact inspection. In the renovation of imported products and the technical transformation projects of aging machinery and equipment, the advantages of non-contact measurement are demonstrated; the electrical wiring of the original equipment can measure the current value without any modification.

(2) The disadvantage of using a shunt is that it cannot provide electrical protection, and there is also insertion loss; the larger the current, the greater the loss, and the larger the volume. We also found that shunts have unavoidable electrical characteristics when testing high-frequency large currents, which cannot accurately transmit the waveform of the measured current, let alone accurately transmit non-sinusoidal waveforms. Current sensors completely eliminate many disadvantages of shunts, and the accuracy and output voltage can be the same as those of shunts, such as accuracy levels of 0.5 and 1.0, with output voltages of 50, 75mV, and 100mV.

(3) Very convenient to use, take an LT100-C type current sensor, connect a 100mA analog meter or digital multimeter in series with the M end and the zero end of the power supply, connect the working power supply, and wrap the controller around the cable return path to accurately display the main control circuit current of 0 to 100A.

(4) Traditional current and voltage transformers, although they have many working current intensity levels and high accuracy under the required power factor, have a very narrow suitable frequency band and cannot transmit direct current. In addition, there is an excitation current during operation, making it an electrical component that can only guarantee a response time of several tens of milliseconds. It is well known that once the secondary side of a voltage transformer is short-circuited, it can cause high voltage hazards. In the application of microcomputer detection, multi-channel signal collection is required, and we are looking for a way to protect and collect signals. Current and voltage sensors inherit the advantages of reliable insulation on the primary and secondary sides of voltage transformers, while also addressing the disadvantages of high cost and large volume of smart transmitters that need to support voltage transformers, providing opportunities for analog-to-digital conversion for automated intelligent management systems such as microcomputer testing. In use, the controller's output signal can be directly input into high-impedance analog meters or digital panels, or processed again, with digital signals sent to automation devices and analog signals sent to computer interfaces.

In high-voltage systems above 3KV, current and voltage sensors can be used in conjunction with traditional high-voltage voltage transformers, replacing traditional power transmitters and facilitating analog-to-digital conversion.

(5) Traditional testing components are limited by many factors such as required frequency, required waveform, and response lag, making them unable to adapt to the development trend of high-power conversion technology. The new generation of high-precision Hall current sensors, along with current and voltage sensors combined with true effective AC/DC converters, have become integrated smart transmitters, which have become the best-known testing modules. In addition, the trend of electronic power equipment towards high frequency, modularization, componentization, and intelligence allows equipment designers to be more adept, marking a milestone global transformation in the history of electronic power technology.

1. Wide measurement coverage: It can accurately measure any waveform of current and voltage, such as direct current, alternating current, single pulse, triangular waveform, etc., and can even faithfully reflect transient peak current and voltage signals.

2. Fast response time: The fastest response speed requires only 1us.

3. High measurement accuracy: Its measurement accuracy is better than 1%, which is suitable for accurate measurement of any waveform. General voltage transformers are rational components, and their connection affects the waveform of the measured signal, with a general accuracy of 3% to 5%, and are only suitable for 50Hz sine waves.

4. Good linearity: Better than 0.2%.

5. Good dynamic characteristics: Fast response speed, can be less than 1us; the response speed of general voltage transformers is 10 to 50ms.

6. Wide operating frequency range: Signals within the frequency range of 0 to 100KHz can be accurately measured.

7. High reliability, average problem-free working time: Average problem-free time > 510 hours.

8. Strong load capacity, large detection range: 0 to several tens of amperes to over ten thousand amperes.

9. Small size, lightweight, easy to install.