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Schneider LRD3322: A Comprehensive Guide
Introduction
When it comes to electrical components, reliability and efficiency are paramount. Schneider Electric, a global leader in energy management and automation, offers a range of products designed to meet these demands. One such product is it. In this article, we will explore everything you need to know about this remarkable component, from its basic features to its applications and benefits.
Understanding the Basics
What is Schneider LRD3322?
it is a thermal overload relay designed to protect electrical circuits from overheating due to prolonged overcurrent conditions. It’s an essential component in maintaining the safety and efficiency of various electrical systems, particularly in industrial and commercial environments.
Key Features and Specifications
it boasts several impressive features:
- Adjustable Current Settings: Allows for precise protection tailored to specific applications.
- Compact Design: Saves space while providing robust protection.
- Thermal Protection: Responds effectively to overheating conditions.
- Ease of Installation: Designed for straightforward installation and maintenance.
Design and Build
Physical Design
it features a sleek and compact design, allowing it to fit into tight spaces without compromising performance. Its build quality ensures reliability and durability in various environments.
Materials Used in Construction
Constructed from high-quality, durable materials, it ensures long-term reliability and performance. The use of robust plastics and metal components enhances its safety and durability.
Durability and Lifespan
Built to last, it has a long lifespan even under demanding conditions. Its durability makes it a preferred choice among professionals in the electrical industry.
Technical Specifications
Voltage and Current Ratings
it is rated for a voltage of up to 690V and can handle currents ranging from 23A to 32A. This makes it suitable for a wide range of applications, particularly in industrial settings.
Temperature Ratings
This thermal overload relay operates efficiently within a temperature range of -20°C to +60°C, ensuring reliable performance in various environmental conditions.
Dimensions and Weight
With a compact design, the Schneider LRD3322 measures approximately 77mm in height, 45mm in width, and 77mm in depth, and weighs around 250 grams. This makes it easy to handle and install.
Installation Process
Pre-installation Requirements
Before installing the Schneider LRD3322, ensure that the electrical system is de-energized to avoid any risk of electric shock. Gather all necessary tools and verify that the relay is suitable for the intended application.
Step-by-Step Installation Guide
- Turn Off the Main Power: Ensure the main power supply is turned off.
- Access the Control Panel: Remove the cover to access the control panel where the relay will be installed.
- Install the Relay: Place the Schneider LRD3322 in the designated slot and secure it.
- Connect the Wires: Attach the wires to the relay terminals, ensuring a secure connection.
- Adjust the Settings: Set the current adjustment knob to the desired current range.
- Replace the Panel Cover: Once everything is connected and adjusted, replace the panel cover.
- Turn On the Main Power: Restore power and test the relay to ensure proper operation.
Safety Precautions
Always follow safety guidelines when working with electrical components. Wear protective gear and use insulated tools to reduce the risk of injury.
Performance and Efficiency
Efficiency Ratings
The Schneider LRD3322 is designed for high efficiency, ensuring minimal energy loss during operation. This makes it an energy-efficient choice for modern electrical systems.
Performance Under Different Conditions
Whether in a commercial building or an industrial plant, the Schneider LRD3322 performs reliably. Its robust design ensures consistent performance even in challenging environments.
| Range | TeSys |
|---|---|
| Product name | TeSys LRD TeSys Deca |
| product or component type | Differential thermal overload relay |
| Device short name | LRD |
| relay application | Motor protection |
| Product compatibility | LC1D80 LC1D95 |
| Network type | DC AC |
| Thermal overload class | Class 10A conforming to IEC 60947-4-1 |
| Thermal protection adjustment range | 17…25 A |
| [Ui] rated insulation voltage | Power circuit: 1000 V conforming to IEC 60947-4-1 Power circuit: 600 V conforming to CSA Power circuit: 600 V conforming to UL |
| 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 | 0.72 A at 500 V AC-15 for signalling circuit 0.06 A at 440 V DC-13 for signalling circuit |
| [Ue] rated operational voltage | 1000 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 conforming to IEC 60947-1 |
| 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 | Power circuit: screw clamp terminals 1 cable(s) 4…35 mm² flexible without cable end Power circuit: screw clamp terminals 1 cable(s) 4…35 mm² flexible with cable end Power circuit: screw clamp terminals 1 cable(s) 4…35 mm² solid without cable end 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 |
| Tightening torque | Control circuit: 1.7 N.m – on screw clamp terminals Power circuit: 9 N.m – on screw clamp terminals |
| Height | 81 mm |
| Width | 70 mm |
| Depth | 115 mm |
| net weight | 0.51 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 | 2.2 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 ATEX INERIS UKCA |
| Unit Type of Package 1 | PCE |
|---|---|
| Number of Units in Package 1 | 1 |
| Package 1 Height | 8.000 cm |
| Package 1 Width | 12.000 cm |
| Package 1 Length | 8.500 cm |
| Package 1 Weight | 498.000 g |
| Unit Type of Package 2 | S02 |
| Number of Units in Package 2 | 12 |
| Package 2 Height | 15.000 cm |
| Package 2 Width | 30.000 cm |
| Package 2 Length | 40.000 cm |
| Package 2 Weight | 6.305 kg |
| Warranty | 18 months |
|---|
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