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Technical Specifications
Microprocessor-based: REM610 operates on a microprocessor platform, ensuring accurate and reliable protection.
Display: Equipped with a 2 × 16 LCD display, providing clear visual information on motor status and protection settings.
Communication: Supports wireless or cable communication via the front panel, and offers optional rear communication modules such as plastic optical fiber, combined optical fiber (plastic and glass), or RS-485 interfaces for system communication.
Input/Output:
Current Inputs: Four precise AC current inputs.
Digital Inputs: Two electrically isolated digital inputs, with an additional three available with the optional RTD module.
Output Contacts: Three normally open power output contacts, two configurable signal output contacts (normally open/closed).
Power Supply: Accepts a wide range of auxiliary power sources, including 100-240 VAC, 110-250 VDC, and 24-60 VDC.
Frequency: Supports user-selectable rated frequencies of 50/60 Hz.
Recording Capabilities: Non-volatile memory for storing up to 100 event codes with timestamps, interference recorder data, and the last five protection action records with timestamps.
Functional Features
Motor Starting Monitoring: Based on thermal stress calculation and speed switch lockout for safe motor start-up.
Overcurrent Protection: Provides both timed and instantaneous overcurrent protection, including three-phase overcurrent and short-circuit protection.
Ground Fault Protection: Non-directional ground fault protection with timed characteristics.
Thermal Overload Protection: Protects against motor overheating due to excessive current or load.
Phase Imbalance Protection: Detects and protects against three-phase imbalance based on negative-sequence current.
Reverse Phase Protection: Guards against reverse phase sequence conditions.
Restart Inhibition: Cumulative start time counter with restart inhibition to prevent excessive motor stress.
Breaker Failure Protection: Monitors and protects against breaker failures.
Temperature Protection: Optional RTD (Resistance Temperature Detector) module for direct temperature measurement of motor bearings and windings.
User-Configurable LEDs: Eight user-definable status LEDs for custom alerts and indications.
Password Protection: Optional password protection for secure access to relay settings.
Multi-Language Support: Supports multiple languages for easy international use.
Application Scenarios
REM610 is widely used in various industrial applications, particularly in protecting and monitoring medium-voltage and large asynchronous motors. Its robust set of features makes it suitable for:
Pump and Fan Applications: Ensures reliable operation of pumps and fans in water treatment, HVAC systems, and other critical processes.
Material Handling: Guards against motor damage in conveyors, crushers, and other heavy-duty material handling equipment.
Process Industries: Provides comprehensive protection for motors in petrochemical, mining, and other process industries.
Power Generation: Suitable for protecting motors in auxiliary power systems and cooling systems of power plants.
