Schneider LRD05| TeSys LRD thermal overload relays – 0.63…1 A – class 10A
Schneider LRD05 Description
Schneider LRD05: The Complete Overview of a Reliable Motor Protection Relay
1. Introduction to Schneider LRD05
The Schneider LRD05 is a motor protection relay designed to safeguard industrial motors against overload conditions. It serves as a vital component in ensuring the smooth and safe operation of machinery, preventing damage and downtime.
2. Technical Specifications
Voltage and Current Ratings
The LRD05 relay is suitable for motor currents ranging from 0.1A to 65A and operates at voltages up to 690V AC.
Trip Class
It adheres to Class 10 trip characteristics, providing fast and reliable protection against overloads.
Trip Curve
With its advanced trip curve, the Schneider LRD05 offers precise and consistent tripping performance, adapting to various load conditions.
Ambient Temperature Range
The relay can function within a temperature range of -25°C to +70°C, making it suitable for a wide range of operating environments.
3. Features and Benefits
Overload Protection
Equipped with sophisticated algorithms, the LRD05 accurately detects overload conditions and initiates timely protective measures, preventing motor damage.
Trip Indication
The relay provides clear visual and audible indicators upon tripping, facilitating prompt diagnosis and troubleshooting.
Compact Design
Its compact and ergonomic design allows for easy integration into control panels and limited-space installations, ensuring versatility and convenience.
4. Applications
Industrial Machinery
The Schneider LRD05 finds extensive usage in various industrial applications, including pumps, compressors, conveyors, and more, offering reliable motor protection.
HVAC Systems
In heating, ventilation, and air conditioning systems, the relay ensures the uninterrupted operation of motors, enhancing efficiency and longevity.
Control Panels
Integrated into control panels, the LRD05 contributes to the overall safety and performance of electrical systems, minimizing downtime and maintenance costs.
5. Installation and Usage
Mounting Options
The relay supports both DIN rail and screw mounting options, providing flexibility in installation according to specific requirements.
Wiring Procedures
Installation and wiring are straightforward, with clearly labeled terminals and comprehensive user manuals provided by Schneider Electric.
Setting the Trip Point
Users can easily adjust the trip point of the relay to match the rated current of the connected motor, ensuring optimal protection and performance.
6. Maintenance and Troubleshooting
Inspection Guidelines
Regular inspection and maintenance are recommended to ensure the continued reliability and effectiveness of the LRD05 relay. Visual checks for signs of wear or damage, along with functional tests, are essential.
Common Issues and Solutions
Common issues such as false tripping or inadequate protection can often be resolved through proper calibration or adjustment of the relay settings, as outlined in the user manual.
7. Comparisons with Other Relays
The Schneider LRD05 stands out among its competitors due to its superior performance, robust construction, and extensive range of features, making it the preferred choice for motor protection applications.
8. Customer Reviews and Testimonials
Customer feedback consistently highlights the reliability, durability, and ease of use of the Schneider LRD05 relay, reaffirming its position as a trusted solution in the industry.
9. Conclusion
In conclusion, the Schneider LRD05 motor protection relay offers unmatched reliability, performance, and versatility, making it an indispensable asset for industrial applications. With its advanced features, compact design, and ease of installation, it provides comprehensive protection for motors while enhancing operational efficiency and reducing downtime.
| Range | TeSys TeSys Deca |
|---|---|
| Product name | TeSys LRD TeSys Deca |
| Product or component type | Differential thermal overload relay |
| Device short name | LRD |
| Relay application | Motor protection |
| Product compatibility | LC1D25 LC1D38 LC1D12 LC1D32 LC1D18 LC1D09 |
| Network type | AC DC |
| Thermal overload class | Class 10A conforming to IEC 60947-4-1 |
| Thermal protection adjustment range | 0.63…1 A |
| [Ui] rated insulation voltage | Power circuit: 600 V conforming to CSA Power circuit: 600 V conforming to UL Power circuit: 690 V conforming to IEC 60947-4-1 |
| Network frequency | 0…400 Hz |
|---|---|
| Mounting support | Plate, with specific accessories Rail, with specific accessories Under contactor |
| Tripping threshold | 1.14 +/- 0.06 Ir conforming to IEC 60947-4-1 |
| Auxiliary contact composition | 1 NO + 1 NC |
| [Ith] conventional free air thermal current | 5 A for signalling circuit |
| Permissible current | 3 A at 120 V AC-15 for signalling circuit 0.22 A at 125 V DC-13 for signalling circuit |
| [Ue] rated operational voltage | 690 V AC 0…400 Hz for power circuit conforming to IEC 60947-4-1 |
| Associated fuse rating | 4 A gG for signalling circuit 4 A BS for signalling circuit |
| [Uimp] rated impulse withstand voltage | 6 kV |
| Phase failure sensitivity | Tripping current 130 % of Ir on two phase, the last one at 0 |
| Control type | Red push-button: stop Blue push-button: reset |
| Temperature compensation | -20…60 °C |
| Connections – terminals | Control circuit: screw clamp terminals 2 cable(s) 1…2.5 mm² flexible without cable end Control circuit: screw clamp terminals 2 cable(s) 1…2.5 mm² flexible with cable end Control circuit: screw clamp terminals 2 cable(s) 1…2.5 mm² solid without cable end Power circuit: screw clamp terminals 1 cable(s) 1.5…10 mm² flexible without cable end Power circuit: screw clamp terminals 1 cable(s) 1…4 mm² flexible with cable end Power circuit: screw clamp terminals 1 cable(s) 1…6 mm² solid without cable end |
| Tightening torque | Control circuit: 1.7 N.m – on screw clamp terminals Power circuit: 1.7 N.m – on screw clamp terminals |
| Height | 66 mm |
| Width | 45 mm |
| Depth | 70 mm |
| Net weight | 0.124 kg |
| Climatic withstand | conforming to IACS E10 |
|---|---|
| IP degree of protection | IP20 conforming to IEC 60529 |
| Ambient air temperature for operation | -20…60 °C without derating conforming to IEC 60947-4-1 |
| Ambient air temperature for storage | -60…70 °C |
| Flame retardance | V1 conforming to UL 94 |
| Mechanical robustness | Vibrations: 6 Gn conforming to IEC 60068-2-6 Shocks: 15 Gn for 11 ms conforming to IEC 60068-2-7 |
| Dielectric strength | 1.89 kV at 50 Hz conforming to IEC 60947-1 |
| Standards | EN/IEC 60947-4-1 EN/IEC 60947-5-1 UL 60947-4-1 UL 60947-5-1 CSA C22.2 No 60947-4-1 CSA C22.2 No 60947-5-1 GB/T 14048.4 GB/T 14048.5 EN 50495 |
| Product certifications | IEC UL CSA CCC EAC BV RINA DNV-GL LROS (Lloyds register of shipping) ATEX INERIS UKCA |
| Unit Type of Package 1 | PCE |
|---|---|
| Number of Units in Package 1 | 1 |
| Package 1 Height | 5 cm |
| Package 1 Width | 7.8 cm |
| Package 1 Length | 8.9 cm |
| Package 1 Weight | 139 g |
| Unit Type of Package 2 | S02 |
| Number of Units in Package 2 | 24 |
| Package 2 Height | 15 cm |
| Package 2 Width | 30 cm |
| Package 2 Length | 40 cm |
| Package 2 Weight | 3.767 kg |
| Unit Type of Package 3 | P06 |
| Number of Units in Package 3 | 384 |
| Package 3 Height | 80 cm |
| Package 3 Width | 80 cm |
| Package 3 Length | 60 cm |
| Package 3 Weight | 68.388 kg |
| Warranty | 18 months |
|---|
Main documents
| Datasheet | Download Datasheet |
| Product datasheet | LRD05 |
| Download | |
| Download | |
| Download | |
| CAD Files | Download |
| Download |
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