1. Introduction
The MEAN WELL LRS-200 series consists of enclosed type switching power supplies designed with a metal or plastic case to protect their internal PCB. These units are intended for installation within the enclosure of an end system. The LRS-200 series includes power supplies with and without built-in fans, depending on their rated power and design concept.
For detailed specifications and diagrams, please refer to the official user manual PDF available from the manufacturer.
2. Safety Information
Please read and understand all safety warnings and cautions before installing or operating the power supply.
- Risk of electrical shock and energy hazard: All failures should be examined by a qualified technician. Do not remove the case of the power supply yourself.
- Do not install power supplies in places with high moisture or near water.
- Do not install power supplies in places with high ambient temperature or near a fire source. Refer to specifications for maximum ambient temperature.
- Output current and output wattage must not exceed the rated values on specifications.
- The ground (FG) must be connected to earth ground.
- All MEAN WELL PSUs are designed in accordance with EMC regulations. Related test reports are available upon request. Since they are component power supplies and will be installed inside a system enclosure, the EMC characteristics of the end system must be re-verified.
- This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (a) This device may not cause harmful interference, and (b) this device must accept any interference received, including interference that may cause undesired operation.
- For BSMI-certified models, compliance with CNS15936 (EMI) is required: (a) flammability of V1 or above is required for surrounding equipment; (b) for models certified as Class A equipment, should not be installed or used in a residential environment to avoid electromagnetic interference.
- For RST-7K5/15K series that might generate high leakage current in delta connection (Δ), specify the leakage current value and add the warning signs below on the final system and its instruction manual.
- High Touch Current:
“WARNING-HIGH LEAKAGE CURRENT-Earth connection essential connecting supply”
- This equipment complies with IEC 61000-3-12 provided that the short-circuit power Ssc is greater than or equal to 1.1MW at the interface point between the user's supply and the public system. It is the responsibility of the installer or user of the equipment to ensure, by consultation with the distribution network operator if necessary, that the equipment is connected only to a supply with a short-circuit power Ssc greater than or equal to 1.1MW.
3. Specifications
| Property | Value |
|---|---|
| Type | Power Supply |
| EU LVD Voltage | High voltage: Above 50Vac or 75Vdc |
| Rated Capacity | 40-1000VA (include 40VA) |
| Model Number | LRS-200 |
| Origin | Mainland China |
| High-concerned chemical | None |
| is_customized | no |
| Package Length | 27 cm |
| Package Width | 20 cm |
| Package Height | 20 cm |
| Package Weight | 0.9 kg |
Detailed Electrical Specifications
The following image provides a comprehensive table of electrical specifications for various LRS-200 models (LRS-200-3.3, LRS-200-4.2, LRS-200-5, LRS-200-12, LRS-200-15, LRS-200-24, LRS-200-36, LRS-200-48).
This table includes details on DC Voltage, Rated Current, Current Range, Ripple & Noise, Voltage Adjustment Range, Voltage Tolerance, Line Regulation, Load Regulation, Setup Time, Hold Up Time, Voltage Range, Frequency Range, Efficiency, AC Current, Inrush Current, Leakage Current, Over Load Protection, Over Voltage Protection, Over Temperature Protection, Working Temperature, Working Humidity, Temperature Coefficient, Vibration, Operating Altitude, Safety Standards, Withstand Voltage, Isolation Resistance, EMC Emission, MTBF, and Dimensions.
Mechanical Specifications and Diagrams
The following images illustrate the mechanical dimensions, terminal pin assignments, block diagram, derating curve, and static characteristics of the LRS-200 series power supply.
This diagram provides critical information for physical installation and connection.
The block diagram shows the internal structure, while the derating curve and static characteristics provide performance data under varying conditions.
4. Installation
Before any installation or maintenance work, always disconnect your system from the utility power source to prevent accidental re-connection.
4.1 Mounting
- Ensure sufficient insulation distance between mounting screws and internal components. Refer to the case drawing in the specifications for maximum mounting screw length.
- Mounting orientations other than standard or operation under high ambient temperatures may increase internal component temperature. This will require de-rating of the output current. Consult the specification sheets for optimum mounting positions and de-rating curves.
- Keep fans and ventilation holes free from obstructions. Maintain a 10-15 cm clearance if an adjacent device is a heat source.
Recommended Torque for Terminal Screws
Torque values can vary based on the enclosure material. Please refer to the following charts for recommended torque values.
| Size of screw (Imperial units) | Recommend torque (kgf-cm) |
|---|---|
| 3-56 | 2.3±20% |
| 4-40 | 3.0±20% |
| 4-48 | 3.3±20% |
| 5-40 | 4.5±20% |
| 5-44 | 4.7±20% |
| 6-32 | 5.6±20% |
| 6-40 | 6.3±20% |
| 8-32 | 10.4±20% |
| 8-36 | 10.8±20% |
| Size of screw (Metric Units) | Recommend torque (kgf-cm) |
|---|---|
| M2.5 | 2.2±20% |
| M3 | 4.1±20% |
| M3.5 | 6.5±20% |
| M4 | 9.7±20% |
| M5 | 19.5±10% |
| M6 | 33.1±10% |
| M7 | 55.3±10% |
| M8 | 80.6±10% |
| Size of screw (Imperial units) | Recommend torque (kgf-cm) |
|---|---|
| 3-56 | 5.0±20% |
| 4-40 | 6.9±20% |
| 4-48 | 7.0±20% |
| 5-40 | 9.4±20% |
| 5-44 | 9.9±20% |
| 6-32 | 12.0±20% |
| 6-40 | 13.4±20% |
| 8-32 | 21.8±20% |
| 8-36 | 23.0±20% |
| Size of screw (Metric Units) | Recommend torque (kgf-cm) |
|---|---|
| M2.5 | 4.6±20% |
| M3 | 8.8±20% |
| M3.5 | 13.7±20% |
| M4 | 20.4±20% |
| M5 | 41.1±10% |
| M6 | 69.1±10% |
| M7 | 117.5±10% |
| M8 | 169.4±10% |
If the above mentioned torque is not sufficient for special applications, a Nylok Blue Patch screw is recommended, and extra torque can be applied if needed.
4.2 Wiring Configuration
The wire colors may vary by country. Refer to the table below for common color codes:
| Connection | North America | European Harmonized |
|---|---|---|
| Live and ACL | Black | Brown |
| Neutral and ACN | White | Blue |
| PE and FG (Class I only) | Green | Green/yellow |
4.2.1 Single-Phase Electricity System
- Connect the FG wire (green or green/yellow) of the power supply to PE (green or green/yellow). This step can be skipped if the unit is marked Class II (ungrounded).
- Connect the ACL wire (black or brown) of the power supply to Live (black or brown).
- Connect the ACN wire (white or blue) of the power supply to Neutral (white or blue).
- Ensure all wires are securely fixed to prevent poor contact.
Single-Phase Wiring Diagram:
This diagram shows the connections for Live/Hot (Black or brown), Neutral (White or blue), and PE (Green or green/yellow) to the AC/L, AC/N, and FG terminals of the power supply unit (PSU).
4.2.2 Three-Phase Electricity System
3Φ 3-wire/△ 230VAC Wiring Diagram:
This diagram illustrates the wiring for a 3-phase, 3-wire, Delta 230VAC system, connecting to the L1, L2, L3, and FG terminals of the power supply.
3Φ 4-wire/Y 400VAC Wiring Diagram:
This diagram illustrates the wiring for a 3-phase, 4-wire, Wye 400VAC system, connecting to the N1, L1, N2, L2, N3, L3, and FG terminals of the power supply.
5. Operating Instructions
Once properly installed and wired, the MEAN WELL LRS-200 series power supply is designed for reliable operation. Ensure all connections are secure and the input voltage matches the power supply's requirements (100-120VAC or 200-240VAC, selectable by switch on some models). The power supply will provide a stable DC output voltage as per its specifications.
- Power On: Apply AC input voltage to the designated terminals. The power supply should activate and provide the specified DC output.
- Voltage Adjustment: If your model supports voltage adjustment (e.g., via an 'ADJ' potentiometer), use a small screwdriver to carefully adjust the output voltage within the specified range. Always verify the output voltage with a multimeter.
- Monitoring: Observe the power supply for stable operation. The LED indicator (if present) should illuminate to indicate power is on.
6. Maintenance
To ensure long-term reliability and optimal performance of your MEAN WELL LRS-200 series power supply, follow these maintenance guidelines:
- Keep Clean: Periodically clean the exterior of the power supply to prevent dust and debris buildup, especially around ventilation openings. Use a soft, dry cloth. Do not use liquid cleaners.
- Ensure Ventilation: Regularly check that all ventilation holes and any fans (if present) are clear and unobstructed to allow for proper airflow and heat dissipation.
- Inspect Connections: Periodically inspect all input and output wiring connections to ensure they remain tight and free from corrosion. Loose connections can lead to poor performance or safety hazards.
- Environmental Conditions: Ensure the power supply operates within its specified temperature and humidity ranges to prevent premature failure.
7. Troubleshooting
If you encounter issues with your MEAN WELL LRS-200 series power supply, consider the following troubleshooting steps:
- No Output Voltage:
- Check the AC input voltage to ensure it is within the specified range and correctly connected.
- Verify that the input voltage switch (if present) is set correctly (e.g., 115V or 230V).
- Inspect all wiring connections for looseness or damage.
- Check for any blown fuses (if accessible and user-replaceable).
- Unstable Output Voltage or Ripple:
- Ensure the load connected to the power supply is not exceeding its rated capacity.
- Check for proper ventilation and ensure the operating temperature is within limits. Overheating can cause instability.
- Verify that the output voltage adjustment (if applicable) is not set to an extreme value.
- Overload Protection Activated:
- Disconnect the load and measure the output voltage. If it returns to normal, the load is too high.
- Reduce the load or use a power supply with a higher rated capacity.
- Over Voltage Protection (OVP) Activated:
- This indicates the output voltage has exceeded a safe limit. Disconnect the power supply immediately.
- This usually requires professional service as it indicates an internal fault.
If problems persist after performing these checks, it is recommended to contact a qualified technician or the manufacturer for further assistance.
8. User Tips
- This regulated power supply is ideal for audio projects due to its low ripple and stable output.
- The LRS-200 series can function as a step-down power supply, for example, converting 240V AC to 24V DC at 6.5 Amperes.
- Users have reported the product to be reliable and perform excellently in its function.
9. Product Overview Video
Watch this video for a visual overview of the MEAN WELL LRS-200 series power supply, including its components and manufacturing process.
This video provides a closer look at the internal components, assembly, and quality control procedures for the power supply units.
10. Warranty and Support
For warranty information, technical support, or service inquiries, please contact the seller or the official MEAN WELL customer service. Ensure you have your product model number and purchase details available when seeking support.