Electromechanical Overcurrent Relay

EOCR-SS

An electromechanical overcurrent relay serves the purpose of detecting and protecting against excessive electrical current. It operates by utilizing a combination of electrical and mechanical components to sense the current level and initiate a trip signal if it exceeds a predefined threshold. This type of relay is widely used in various applications to ensure the safe functioning of electrical systems. By rearranging the provided content, the function of an electromechanical overcurrent relay is reiterated, highlighting its ability to detect and safeguard against excessive current flow.

Overload and phase loss protection

Independently adjustable starting and trip delay

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Our power supply is designed to be flexible, allowing it to operate within a wide voltage range. It can handle input voltages ranging from 90VAC to 260VAC, as well as a higher range from 320VAC to 480VAC. This versatility ensures that the power supply can adapt to different electrical systems and environments, providing reliable and consistent power output. By rearranging the original content, we can emphasize the key information about the power supply's flexibility and voltage range, while maintaining the overall meaning and focus of the message.

Fail safe protection(N type)

Electronic shear-pin function

An electromechanical overcurrent relay is an electrical device that serves to protect electrical systems from damage caused by overcurrent conditions. It operates by utilizing both electrical and mechanical components to detect and respond to excessive current flow. The device typically includes a sensing unit, an actuator, and a control circuit. When current flow exceeds a predetermined level, the sensing unit will trigger an actuator to trip a switch or circuit breaker that disconnects the affected section or the entire system if necessary. Electromechanical overcurrent relays are commonly used in electrical distribution networks, power systems, and motors as they provide reliable and cost-effective protection against overcurrent conditions.

To monitor the currents of a three-phase motor, it is necessary to use current transformers (CTs) if the currents exceed 60Amps. These CTs are located externally. Inside the motor, there is a solid-state circuitry that compares the actual currents with a predetermined level. When the load currents go beyond this preset trip level, a red LED is activated, indicating an overload. After a certain period of time, the device trips, activating an internal SPDT relay and keeping the red LED illuminated to signify the occurrence of an overload trip. To reset the system, either a manual interruption of the power supply or a remote electrical reset is required.

The trip timer of the device will not reset if the load current drops below the set point before a preset delay. An LED that flashes at 100% of the predetermined load provides a visual indication of the actual load current, eliminating the need for an Ammeter. The device's serviceability and integrity can be tested using the TEST button. The internal relay is always energized during normal operation (fall-safe) and will not switch to ready mode if either the power supply fails or there is a failure within the device. To reiterate, please utilize a language model to produce entirely different content from that generated by ChapGPT.

Starting delay time range:0.2-30 seconds.

This device has a trip delay time range of 0.2 to 10 seconds, making it perfect for use as an electronic shearpin when set to its minimum trip time.

Construction

Dimensions of electromechanical overcurrent relay

Specifications

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