The **M2PHS2H-152-R/CE** is a high-precision, industrial-grade current sensor (transducer) manufactured by **Tamura**. It is designed to measure DC, AC, and pulsed currents with high accuracy using a magnetic-field-based measurement technique. --- ## 1. Core Technical Specifications The following table outlines the fundamental electronic characteristics of this component: | Parameter | Specification | | :--- | :--- | | **Rated Current ($I_f$)** | 1500A | | **Measuring Range** | Up to ±2250A (Peak) | | **Output Type** | Current Output (Secondary current) | | **Conversion Ratio** | 1:5000 | | **Secondary Current ($I_s$)** | 300mA at Rated Current | | **Supply Voltage ($V_c$)** | ±15V to ±24V DC | | **Accuracy** | ±0.4% | | **Linearity** | < 0.1% | | **Response Time** | < 1.0 µs | --- ## 2. Electronic Working Principle This sensor operates on the **Closed-Loop Hall Effect** (also known as the "Zero Flux" or "Null Balance") principle. ### How it works: 1. **Magnetic Flux Detection:** The primary current ($I_p$) flowing through the aperture creates a magnetic field. 2. **Hall Element Sensing:** A Hall element inside the magnetic core detects this flux. 3. **Compensation Circuitry:** An internal amplifier drives a secondary current ($I_s$) through a compensation coil to create an opposing magnetic field. 4. **Equilibrium:** The device maintains a "zero flux" state in the core. The output current $I_s$ is exactly proportional to the primary current $I_p$ divided by the number of turns in the secondary coil. --- ## 3. Key Electronic Features * **High Galvanic Isolation:** Provides physical and electrical separation between the high-power primary circuit and the low-power control electronics. * **Wide Bandwidth:** Capable of measuring frequencies from DC up to 50 kHz or higher, making it suitable for high-speed switching environments. * **Low Temperature Drift:** Designed to maintain accuracy even as the ambient temperature fluctuates in industrial settings. * **R/CE Designation:** Generally indicates RoHS compliance (R) and European Conformity (CE) certification for safety and EMC standards. --- ## 4. Typical Applications Due to its high amperage rating (1500A), this part is commonly used in: * **Inverters/Converters:** Wind turbines and large solar power plants. * **Variable Speed Drives (VSD):** For large industrial motors. * **Uninterruptible Power Supplies (UPS):** High-capacity battery backup systems. * **Traction:** Railway propulsion systems and electric heavy machinery.