OCR15D

OCR15D is a type of overcurrent relay commonly used in electrical protection systems to monitor and protect circuits from excessive current flow. Here’s an overview of its key features and functionalities:

1. Overcurrent Protection: The primary function of the OCR15D relay is to detect and respond to overcurrent conditions in electrical circuits. It continuously monitors the current flowing through the protected circuit and activates when the current exceeds a predefined threshold.
2. Adjustable Settings: The OCR15D relay typically offers adjustable settings for current pickup, time delay, and other parameters. These settings allow users to customize the relay’s response characteristics based on the specific requirements of the application.
3. Time Delay: In addition to instantaneous overcurrent protection, the OCR15D relay may include time delay functionality. This feature allows the relay to tolerate temporary current spikes or inrush currents without tripping, reducing the risk of nuisance tripping.
4. Inverse Time Characteristics: The OCR15D relay often employs inverse time characteristics, where the tripping time decreases as the magnitude of the overcurrent increases. This allows the relay to provide faster response to high-level faults while offering coordination with downstream protection devices.
5. Fault Indication: When the OCR15D relay operates due to an overcurrent fault, it typically provides visual and/or audible indication to alert operators of the fault condition. This allows for quick identification and troubleshooting of electrical faults.
6. Modular Design: Some versions of the OCR15D relay come in a modular design, allowing for easy installation and integration into protection relay panels or control cabinets. The modular format simplifies maintenance and upgrades without requiring extensive rewiring.
7. Compatibility: The OCR15D relay is compatible with various types of electrical systems, including power distribution networks, industrial machinery, motor control centers, and electrical substations.
8. Certifications and Standards: To ensure reliability and compliance with industry standards, the OCR15D relay undergoes testing and certification by regulatory bodies such as UL (Underwriters Laboratories), CSA (Canadian Standards Association), and IEC (International Electrotechnical Commission).

Overall, the OCR15D overcurrent relay plays a crucial role in safeguarding electrical circuits and equipment from the damaging effects of excessive current. Its adjustable settings, time delay features, and fault indication capabilities make it a versatile solution for a wide range of protection applications.