The **WAC-AZAC-R** is an electronic component primarily classified as a **Current Sensor** or **Current Transducer**, typically used in industrial automation, power monitoring, and motor control systems. Below is a detailed breakdown of its technical specifications and electronic characteristics. --- ### 1. General Overview The "AZAC" series is often associated with **WAC (West Atlantic Components)** or similar manufacturers specializing in high-precision current measurement. These devices convert high AC currents into a manageable analog or digital signal for PLCs (Programmable Logic Controllers) or SCADA systems. ### 2. Technical Specifications | Feature | Specification Details | | :--- | :--- | | **Type** | AC Current Transducer / Current Switch | | **Input Range** | Typically 0-10A, 0-20A, or 0-50A (Model dependent) | | **Output Type** | Relay Output (indicated by the "-R" suffix) | | **Response Time** | < 200ms | | **Isolation Voltage** | 2000V AC or higher | | **Operating Temperature** | -20°C to +60°C | ### 3. Key Electronic Components & Functionality #### A. Core Sensing Element The device uses an internal **Toroidal Current Transformer (CT)**. The wire carrying the current to be measured passes through the center hole of the sensor. The magnetic field generated by the AC current induces a proportional voltage in the secondary winding. #### B. Signal Conditioning Circuitry Inside the housing, several sub-circuits process the induced voltage: * **Rectifier Bridge:** Converts the induced AC signal into a DC voltage. * **Filtering Circuit:** Uses capacitors and resistors to smooth the signal and remove high-frequency noise. * **Comparator/Operational Amplifier:** Compares the measured signal against a predefined setpoint (threshold). #### C. Output Mechanism (The "-R" Feature) The **-R** in the model name signifies a **Relay Output**. * When the sensed current exceeds (or falls below) a specific threshold, the internal micro-relay trips. * This provides a "Dry Contact" (normally open/normally closed) used to trigger alarms or shut down machinery. ### 4. Typical Wiring Diagram (Conceptual) ```mermaid graph LR A[AC Main Line] --> B(Sensor Hole) B --> C{Internal Circuit} C --> D[Relay Output Terminals] D --> E[Alarm/PLC Input] ``` ### 5. Applications 1. **Motor Protection:** Detecting locked-rotor conditions or overloads. 2. **Status Monitoring:** Confirming that a heating element or fan is actually running (not just powered). 3. **Lighting Control:** Monitoring street light circuits for bulb failures. ---