The **HAS-G2-R** is a specific variant of a high-speed Hall Effect current sensor, typically manufactured by **LEM** (or similar industrial electronic component providers). It is designed for the non-contact measurement of DC, AC, and pulsed currents with galvanic isolation. Below is a breakdown of its electronic specifications and technical architecture. --- ### 1. Key Technical Specifications The electronic performance of the HAS-G2-R is characterized by its sensitivity and response time. | Feature | Specification (Typical) | | :--- | :--- | | **Measurement Type** | Open Loop Hall Effect | | **Primary Nominal Current ($I_{pn}$)** | 50A to 600A (depending on sub-model) | | **Supply Voltage ($V_c$)** | ±15V (Dual Supply) | | **Output Voltage ($V_{out}$)** | ±4V at $I_{pn}$ | | **Accuracy** | ±1% of $I_{pn}$ | | **Response Time** | < 3 $\mu$s | | **Frequency Bandwidth** | DC to 50 kHz | --- ### 2. Internal Electronic Components The device functions through a combination of magnetic and semiconductor elements: * **Magnetic Core:** A high-permeability ring that concentrates the magnetic flux generated by the primary conductor passing through the center. * **Hall Effect Generator:** A semiconductor slice placed in the gap of the magnetic core. It generates a small voltage (Hall Voltage) proportional to the magnetic flux density. * **Signal Conditioning Circuit:** * **Operational Amplifiers:** To amplify the millivolt-level Hall voltage to a usable ±4V range. * **Temperature Compensation:** Internal resistors and thermistors to offset drift caused by heat. * **Encapsulation:** The electronic parts are housed in a self-extinguishing plastic case (UL 94-V0 rated) to protect against industrial interference. --- ### 3. Pinout and Connection Diagram The HAS-G2-R usually features a 4-pin or 3-pin interface for the secondary circuit. | Pin Number | Function | Description | | :--- | :--- | :--- | | **1** | $+V_c$ | Positive Power Supply (+15V) | | **2** | $-V_c$ | Negative Power Supply (-15V) | | **3** | $M$ | Output Signal (Measurement) | | **4** | $0V$ | Common Ground / Reference | --- ### 4. Application Electronic Integration To integrate this part into a PCB or control system, follow these electronic guidelines: 1. **Filtering:** Place 100nF decoupling capacitors close to the $+V_c$ and $-V_c$ pins to reduce power supply noise. 2. **Load Impedance:** The output is a voltage signal. Ensure the input impedance of the receiving ADC or Microcontroller is $> 10 k\Omega$ to prevent signal attenuation. 3. **Isolation:** The primary conductor (high power) is physically separated from the secondary electronics, providing high insulation voltage (typically 3kV AC).