The **W2CE-1CB-R2/Q** is a high-precision, industrial-grade **Current Transducer** (specifically a Hall Effect current sensor) manufactured by **Wako Electronics**. These devices are designed to measure alternating current (AC), direct current (DC), or pulsating currents with galvanic isolation between the primary circuit and the secondary output. --- ### ## Technical Specifications Below is a breakdown of the typical electronic characteristics for this specific series: | Parameter | Specification Details | | :--- | :--- | | **Measurement Type** | Closed-loop (Zero-flux) Hall Effect | | **Rated Current ($I_{pn}$)** | Typically 100A - 200A (Model dependent) | | **Supply Voltage ($V_c$)** | ±15V DC (Standard bipolar supply) | | **Output Signal** | Current output (typically mA) proportional to primary current | | **Accuracy** | High linearity (often < 0.1% at rated current) | | **Response Time** | < 1 microsecond (High speed) | | **Frequency Range** | DC to 100 kHz or higher | | **Isolation Voltage** | 3.0 kV to 6.0 kV AC, 50/60 Hz, 1 min | --- ### ### Core Electronic Components & Architecture The "W2CE" series utilizes a **Closed-Loop** architecture, which provides superior accuracy compared to open-loop sensors: 1. **Magnetic Core:** A high-permeability toroidal core that gathers the magnetic field generated by the primary conductor. 2. **Hall Element:** Positioned in the air gap of the core to detect magnetic flux. 3. **Compensation Coil (Secondary):** Wrapped around the core. An internal amplifier drives current through this coil to create an opposing magnetic field that cancels the primary field (maintaining zero flux). 4. **Amplifier Circuitry:** Internal operational amplifiers manage the feedback loop to ensure the secondary current remains exactly proportional to the primary current divided by the number of turns. --- ### ### Application Use Cases Due to its high precision and isolation, the W2CE-1CB-R2/Q is commonly used in: * **Variable Frequency Drives (VFDs):** Monitoring motor current for precise torque control. * **Uninterruptible Power Supplies (UPS):** Managing battery charge/discharge rates. * **Solar Inverters:** Converting DC from panels to AC for the grid. * **Welding Equipment:** Maintaining stable arc currents. --- ### ### Key Advantages * **Galvanic Isolation:** Physical separation between the high-power primary wire and the low-voltage control electronics. * **No Insertion Loss:** Since it measures via a magnetic field, it does not introduce resistance into the primary circuit. * **Thermal Stability:** Closed-loop systems are less sensitive to temperature fluctuations than open-loop alternatives.