SCHNEIDER LT3SMOOM Central control module

Schneider Electric TeSys T Motor Management Relay LT3SM00M Overview

The Schneider Electric TeSys T LT3SM00M is an advanced motor management relay designed to provide comprehensive protection, control, and monitoring functions for electric motors. As part of the TeSys T series, it offers precise motor protection, optimizes equipment availability, and simplifies installation and operation.

Product Detailed Description

• Function:

• Motor Protection: Provides comprehensive motor protection including overload, underload, locked rotor, asymmetry, earth fault, overvoltage, undervoltage, and phase sequence failure.

• Motor Control: Supports motor starting, stopping, reversing, and other control functions.

• Motor Monitoring: Real-time monitoring of motor current, voltage, power, energy, running time, and other parameters.

• Fault Diagnostics: Provides detailed fault information and history records for easy troubleshooting.

• Communication: Supports various communication protocols (e.g., Modbus) for easy integration into automation systems.

• Programmability: Users can set protection parameters and control logic according to specific application requirements.

• Features:

• Integrated design combining protection, control, and monitoring in one unit.

• Intuitive user interface and display for easy local operation and parameter setting.

• Precise measurement and protection algorithms ensure reliable motor protection.

• Flexible configuration options to adapt to different motor and application needs.

• Modular expansion capability to add additional function modules as required.

• Powerful communication capabilities for remote monitoring and control.

Product Parameters

• Product Range: TeSys T

• Model: LT3SM00M

• Rated Current Range (Ir): 0.4 to 100 A (selectable via external current transformers)

• Control Voltage (Uc): 100-240 V AC 50/60 Hz

• Supply Voltage (Us): 100-240 V AC 50/60 Hz

• Contact Outputs:

• Fault Contact: 1 CO (configurable NO/NC)

• Alarm Contact: 1 CO

• Control Contacts: 2 NO + 2 NC

• Communication Protocol: Modbus RTU

• Display: LCD backlit display

• Protection Degree: IP20 (terminals), IP30 (front)

• Mounting Mode: DIN rail mounting

• Ambient Temperature: -25 °C to +70 °C

• Standards Compliance: IEC 60947-4-1, UL 508, CSA C22.2 No. 14

• Other Functions:

• Motor starter control (direct-on-line, star-delta, etc.)

• Energy metering

• Running hours counter

• Fault and event logging

• Thermal overload curve selection

• Earth fault protection (requires external zero-sequence current transformer)

Product Advantages

• Comprehensive Motor Protection: Provides a wide range of protection functions to ensure effective motor protection in various fault conditions.

• Improved Equipment Availability: Reduces downtime and increases equipment availability through preventive maintenance and rapid fault diagnosis.

• Optimized Energy Efficiency: Real-time monitoring of motor energy consumption helps optimize energy usage.

• Simplified Installation and Operation: Integrated design and intuitive user interface simplify installation, commissioning, and operation.

• Flexible Configuration: Can be flexibly configured according to different motor and application requirements.

• Powerful Communication Capabilities: Facilitates integration into various automation systems for remote monitoring and control.

Precautions

• Correct Selection: Select the appropriate model and current transformers based on the motor's rated current, voltage, and application requirements.

• Correct Installation: Follow Schneider Electric's installation guidelines to ensure the relay is securely mounted and correctly wired.

• Parameter Setting: Set the relay's protection parameters correctly according to the specific motor parameters and protection needs.

• Current Transformers (CTs): External current transformers matching the relay's rated current range must be used.

• Earth Fault Protection: An external zero-sequence current transformer needs to be connected if earth fault protection is required.

• Safe Operation: Always follow electrical safety regulations during installation, operation, and maintenance.

• Regular Inspection: Regularly inspect the relay's operating status and wiring to ensure proper functioning.

Product Applications

The Schneider TeSys T LT3SM00M motor management relay is widely used in various industrial and commercial sectors for the protection and control of three-phase AC motors, including:

• Pumps and Fans: Provides comprehensive protection and control, optimizing operational efficiency.

• Compressors: Protects compressors from overload, locked rotor, and other faults.

• Conveyor Belts and Material Handling Systems: Ensures reliable motor operation and reduces downtime.

• Heating, Ventilation, and Air Conditioning (HVAC): Controls and protects motors in air conditioning and ventilation equipment.

• Cranes and Lifting Equipment: Provides necessary motor protection to ensure safe operation.

• Other Industrial Machinery: Suitable for various applications requiring reliable motor protection and control.

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