The **CS-B2-02-R-05** is a high-precision, industrial-grade current sensor (often identified within the **CS series** of closed-loop Hall effect sensors). These components are designed to measure DC, AC, and pulsed currents with high galvanic isolation. --- ### 1. Key Technical Specifications The following table summarizes the primary electronic characteristics of the CS-B2-02-R-05: | Parameter | Value / Description | | :--- | :--- | | **Sensor Type** | Closed-loop Hall Effect | | **Rated Current ($I_{pn}$)** | 200A (Typical for this series code) | | **Measuring Range** | 0 to ±300A (Peak) | | **Supply Voltage ($V_c$)** | ±12V to ±15V DC | | **Output Signal** | Current Output (Conversion ratio 1:2000) | | **Accuracy** | ±0.5% at Room Temperature | | **Linearity** | < 0.1% | | **Frequency Bandwidth** | DC to 100 kHz | | **Isolation Voltage** | 3kV to 6kV AC (50Hz, 1 min) | --- ### 2. Internal Electronic Components & Operation The device operates on the **Closed-Loop (Zero Flux)** principle, which involves several internal stages: 1. **Magnetic Core:** A high-permeability soft magnetic ring that concentrates the magnetic field generated by the primary conductor passing through the center. 2. **Hall Element:** Positioned in the air gap of the core. It detects the magnetic flux and converts it into a small voltage. 3. **Secondary Compensation Coil:** A multi-turn winding around the core. An internal amplifier drives a current through this coil to create an opposing magnetic field. 4. **Feedback Circuit:** The internal electronics continuously adjust the secondary current until the net magnetic flux in the core is zero. The secondary current is therefore a perfect scaled replica of the primary current. --- ### 3. Connection Pinout Typically, these sensors utilize a 3-pin or 4-pin connector (e.g., Molex or terminal block): * **+V:** Positive Power Supply (e.g., +15V) * **-V:** Negative Power Supply (e.g., -15V) * **M / Out:** Measuring Output (Connected to a sampling resistor $R_m$ to ground) * **0V / Gnd:** Common Ground reference --- ### 4. Application Use Cases Due to its high precision and fast response time, the CS-B2-02-R-05 is used in: * **Variable Frequency Drives (VFDs):** Monitoring motor phase current. * **Uninterruptible Power Supplies (UPS):** Managing battery charge/discharge cycles. * **Solar Inverters:** Converting DC strings to AC grid power. * **Welding Equipment:** Maintaining stable output current for arc control.