SCHNEIDER NSYCCOTHO Motor Protection

Description

SCHNEIDER NSYCCOTHO Motor Protection

Schneider Electric is a global leader in motor control and protection, primarily through its flagship TeSys range. Their motor protection solutions are designed to prevent motor failure due to overloads, short circuits, phase loss, and under-voltage.

The most common components include Motor Manual Starters (GV series) and Thermal Overload Relays (LRD series).

1. Product Detailed Description

Schneider’s motor protection devices typically fall into two categories:

• TeSys GV (Motor Circuit Breakers): These provide integrated protection (thermal and magnetic) and manual control. They handle both short-circuit and overload protection in a single unit.

• TeSys LRD (Thermal Overload Relays): These are usually “plugged” into a contactor (like the TeSys D). They monitor the current and trip the contactor if the motor overheats, but they do not provide short-circuit protection on their own.

2. Typical Technical Parameters

Specifications for the popular TeSys GV2ME and LRD series:

3. Key Product Advantages

• EverLink Terminals: A patented power connection technology that ensures permanent tightening pressure even if the copper cables “creep” over time, preventing overheating.

• Compact Footprint: High-density design allows for more protection components in a smaller control cabinet.

• Comprehensive Coordination: Schneider provides “Type 2 Coordination” tables, ensuring that after a short circuit, the motor starter remains functional without needing replacement.

• Environmental Resilience: Many models are designed to operate in extreme temperatures ($-20^{circ}text{C}$ to $+60^{circ}text{C}$) and are resistant to shock and vibration.

4. Important Considerations (Precautions)

• Tripping Class Selection: Standard motors usually use Class 10. If you have a “heavy start” motor (high inertia, like a large fan), you must select a Class 20 device to avoid nuisance tripping during startup.

• Full Load Amps (FLA): Always set the dial to the actual FLA listed on the motor nameplate, not the maximum capacity of the breaker.

• Reset Mode: Schneider LRD relays offer “Manual” or “Automatic” reset. Use Manual for safety unless the application is in a remote, unmanned location where immediate restart is critical.

• Ambient Temperature: If the protector is installed in a very hot cabinet, you may need to de-rate the current setting (consult the temperature correction curves).

5. Product Applications

• HVAC Systems: Protection for pumps, fans, and compressor motors in commercial buildings.

• Manufacturing: Conveyor belts, mixers, and packaging machinery.

• Water Treatment: Submersible pumps and chemical dosing systems.

• Infrastructure: Elevators, escalators, and tunnel ventilation.

Shipping Port: Xiamen, China

Payment: Bank of Chicago, Bank of Singapore

Express cooperation: fedex, DHL, UPS and your express account

Service: Professional Sales provides 24 hours /7 days online service

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