1. Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of the MEAN WELL ELG-75-C700 Single Output Switching LED Power Supply. Please read this manual thoroughly before installation and use to ensure proper function and safety.
Image 1.1: The MEAN WELL ELG-75-C700 LED Power Supply, showing its compact metal casing and wiring connections.
2. Features and Applications
The ELG-75-C series is a 75W AC/DC LED driver featuring constant current mode and high output voltage. It operates from 180-295VAC and offers various models with different rated current ranges. Key features include:
- Constant current output with high output voltage (>60VDC).
- Universal AC input range: 180~295VAC only.
- Built-in active Power Factor Correction (PFC) function.
- High efficiency up to 93%.
- Cooling by free air convection.
- Protections: Short circuit, Over voltage, Over temperature.
- Output current adjustable via output cable or internal potentiometer (depending on model type).
- IP67 / IP65 design for indoor or outdoor installations.
- Suitable for dry, damp, or wet locations.
- Suitable for LED lighting and street lighting applications.
- Meets 6KV surge immunity level (IEC61000-4-5).
- No load power consumption <0.5W.
- Type HL LED Driver for use in Class I, Division 2 hazardous location luminaires.
Typical applications for this power supply include LED street lighting, LED bay lighting, LED greenhouse lighting, and other Class I, Division 2 hazardous location luminaires.
Image 2.1: Overview of the ELG-75-C series features and typical applications, including LED street lighting and greenhouse lighting. This image also contains the model encoding information.
3. Model Encoding
The model number provides information about the specific configuration of the power supply:
ELG - 75 - CXXX [A/B/D/DA]
- ELG: Series Name
- 75: Output wattage (75W)
- CXXX: Constant Current Output (e.g., C700 for 700mA)
- Blank-Type: IP67 rated. Cable for I/O connection.
- A-Type: IP65 rated. Constant current level adjustable through internal potentiometer.
- B-Type: IP67 rated. Built-in 3-in-1 dimming function (0~10VDC, PWM signal, or resistance).
- D-Type (option): IP67 rated. Smart Timing Dimming function.
- DA-Type (option): IP67 rated. DALI function.
Refer to Image 2.1 for a visual representation of the model encoding structure.
4. Specifications
Detailed electrical and environmental specifications for the ELG-75-C series are provided below. Note that the ELG-75-C700 is specifically rated for 700mA output.
| Parameter | ELG-75-C350 | ELG-75-C500 | ELG-75-C700 | ELG-75-C1050 | ELG-75-C1400 |
|---|---|---|---|---|---|
| OUTPUT | |||||
| Rated Current | 350mA | 500mA | 700mA | 1050mA | 1400mA |
| Constant Current Region | 107~214V | 75~150V | 53~107V | 35~71V | 27~54V |
| Rated Power | 74.9W | 75W | 74.9W | 74.55W | 75.6W |
| Ripple & Noise (max.) | 2Vp-p | 1.5Vp-p | 1.0Vp-p | 1.0Vp-p | 0.5Vp-p |
| Current Tolerance | ±5.0% | ||||
| Current Adj. Range | Can be adjusted by internal potentiometer (for A-Type only) | ||||
| 175~350mA | 250~500mA | 350~700mA | 525~1050mA | 700~1400mA | |
| No Load Output Voltage (max.) | 224V | 158V | 114V | 78V | 61V |
| Setup, Rise Time | 500ms, 100ms at full load | ||||
| Hold Up Time | 10ms at full load | ||||
| INPUT | |||||
| Voltage Range | 180~295VAC | ||||
| Frequency Range | 47~63Hz | ||||
| Power Factor (typ.) | PF > 0.95/230VAC, PF > 0.92/277VAC at full load | ||||
| Total Harmonic Distortion | THD < 20% when output loading ≥50% at 230VAC input and output loading ≥75% at 277VAC input | ||||
| Efficiency (typ.) | 91% | 91% | 90% | 90% | 90% |
| AC Current (typ.) | 0.45A/230VAC | 0.38A/277VAC | |||
| Inrush Current (typ.) | COLD START 50A (twidth=350µs measured at 50% Ipeak) at 230VAC | ||||
| Max. No. of PSUs on 16A Circuit Breaker | 5 units (circuit breaker of type B) / 8 units (circuit breaker of type C) at 230VAC | ||||
| PROTECTION | |||||
| Leakage Current | <0.75mA / 277VAC | ||||
| Short Circuit | Hiccup mode, recovers automatically after fault condition is removed | ||||
| Over Voltage | 225~260V | 160~190V | 115~140V | 80~100V | 64~79V |
| Protection Type | Shut down O/P voltage, re-power on to recovery | ||||
| Over Temperature | Shut down O/P voltage, re-power on to recovery | ||||
| ENVIRONMENT | |||||
| Working Temp. | Tcase = -40 ~ +85°C (Refer to "Derating Curve") | ||||
| Max. Case Temp. | Tcase = +85°C | ||||
| Working Humidity | 20~95% RH non-condensing | ||||
| Storage Temp., Humidity | -40~+80°C, 10~95% RH | ||||
| Temp. Coefficient | ±0.03%/°C (0~50°C) | ||||
| Vibration | 10~500Hz, 5G 12min./1cycle, period for 72min. each along X, Y, Z axes | ||||
| SAFETY & EMC | |||||
| Safety Standards | UL8750(Type HL), EN61347-1, EN61347-2-13 independent, EN62384, IP65 or IP67 approved | ||||
| Withstand Voltage | I/P-O/P:3.75KVAC, I/P-FG:2.0KVAC, O/P-FG:1.5KVAC | ||||
| Isolation Resistance | I/P-O/P, I/P-FG, O/P-FG:100M Ohms / 500VDC / 25°C / 70% RH | ||||
| EMC Emission | Compliance to EN55015,EN61000-3-2 Class C (≥ 50% load); EN61000-3-3 | ||||
| EMC Immunity | Compliance to EN61000-4-2,3,4,5,6,8,11; EN61547, light industry level (surge 6KV) | ||||
| OTHERS | |||||
| MTBF | 305Khrs min. MIL-HDBK-217F (25°C) | ||||
| Dimension | 180*63*35.5 mm (L*W*H) | ||||
| Packing | 0.7Kg; 16pcs/12.6Kg/0.67CUFT | ||||
Image 4.1: Detailed specifications table for the ELG-75-C series, including output, input, protection, environment, safety, EMC, and other parameters.
5. Setup and Installation
Proper installation is crucial for the safe and reliable operation of the LED power supply. Refer to the mechanical specifications for dimensions and mounting options.
5.1 Wiring Connections
- Input (AC): Connect the AC input wires (Blue for Neutral, Brown for Line) to your main power source. Ensure the input voltage is within the specified range of 180-295VAC.
- Output (DC): Connect the DC output wires (Black for -V, Red for +V) to your LED lighting fixture. Observe correct polarity.
- Grounding: Ensure the power supply is properly grounded to prevent electrical hazards.
5.2 Mounting
- Mount the power supply in a location that allows for adequate air circulation to facilitate cooling by free air convection.
- The unit is IP67/IP65 rated, making it suitable for indoor or outdoor installations, including dry, damp, or wet locations.
- Refer to the mechanical drawings in Section 11 for mounting hole dimensions and overall unit size.
For detailed installation instructions, please refer to the official MEAN WELL installation manual available on their website: meanwell.com/webnet/search/InstallationSearch.html
Image 5.1: Mechanical specifications for B-Type/DA-Type models and a reference to the online installation manual.
6. Operating Instructions
6.1 Basic Operation
Once properly installed and connected, the ELG-75-C700 will provide a constant current output to the connected LED load. Ensure the LED load's voltage requirements fall within the power supply's constant current region (53~107V for C700 model).
6.2 Output Current Adjustment (A-Type)
For A-Type models, the constant current level can be adjusted via an internal potentiometer. This allows fine-tuning of the output current within the specified adjustment range (350~700mA for C700 A-Type).
6.3 Dimming Operation (B-Type)
B-Type models feature a 3-in-1 dimming function, allowing adjustment of the output current via 0~10VDC, PWM signal, or resistance. The dimming wires are typically DIM+ (Blue) and DIM- (White).
- 0~10VDC Dimming: Connect a 0~10VDC dimmer to the DIM+ and DIM- terminals. 0V typically corresponds to 0% output, and 10V to 100% output.
- PWM Signal Dimming: Connect a PWM signal source to the DIM+ and DIM- terminals. The frequency range for PWM dimming is typically 100Hz ~ 3KHz.
- Resistance Dimming: Connect a variable resistor (potentiometer) between DIM+ and DIM-. The resistance value will determine the output current level.
Caution: Do not connect "DIM-" to "-V" (output negative terminal).
Image 6.1: Diagram illustrating the dimming operation for B-Type models, showing connections for 0-10VDC, PWM, and resistance dimming, along with corresponding characteristic curves.
7. Performance Characteristics
7.1 Block Diagram, Derating Curve, and Static Characteristics
The internal block diagram illustrates the functional stages of the power supply, including EMI filter, PFC circuit, power switching, rectifiers & filter, and protection circuits (O.T.P., O.L.P., O.V.P.). The derating curve indicates the maximum permissible output load as a function of the case temperature (Tcase). The static characteristics graph shows the relationship between output load and input voltage, demonstrating stable output performance across the input voltage range.
Image 7.1: This image displays the functional block diagram of the ELG-75-C series, the derating curve showing load percentage versus case temperature, and the static characteristics graph illustrating load percentage versus input voltage.
7.2 Power Factor, Efficiency, and Driving Methods
The power factor characteristic graph illustrates the power factor (PF) at different load levels for various input voltages (277V and 230V), highlighting the built-in active PFC function. The efficiency vs. load graph demonstrates the power supply's efficiency at different load percentages, showing that the ELG-75-C series achieves high efficiency, up to 93%. The ELG-75-C series is designed to operate in constant current mode (CC) to drive LED modules, as shown by the typical LED power supply I-V curve which includes the constant current area and hiccup protection.
Image 7.2: This image presents graphs for the power factor characteristic, efficiency versus load, and the typical I-V curve for driving LED modules.
8. Maintenance
The ELG-75-C700 LED power supply is designed for reliable operation with minimal maintenance. Follow these guidelines:
- Cleaning: Periodically inspect the unit for dust or debris accumulation, especially around cooling surfaces. Clean with a soft, dry cloth if necessary. Ensure power is disconnected before cleaning.
- Inspection: Regularly check wiring connections for any signs of damage, corrosion, or loose terminals.
- Environment: Ensure the operating environment remains within the specified temperature and humidity ranges to prevent premature failure.
- No User-Serviceable Parts: Do not attempt to open or repair the power supply. Doing so will void the warranty and may expose you to hazardous voltages.
9. Troubleshooting
If you encounter issues with your ELG-75-C700 power supply, consider the following common troubleshooting steps:
- No Output Power:
- Verify that the AC input power is connected and within the specified voltage range (180-295VAC).
- Check for tripped circuit breakers or blown fuses in the input line.
- Ensure all wiring connections are secure and correct.
- The unit may be in protection mode (e.g., short circuit, over voltage, over temperature). Disconnect power, wait a few minutes, and reapply.
- LEDs Flickering or Dim:
- Check the LED load for proper connection and ensure it is compatible with the power supply's constant current output.
- If using a dimming function (B-Type), verify the dimmer is correctly connected and functioning. Ensure DIM- is not connected to -V.
- Confirm the ambient temperature is within the operating range to avoid thermal derating.
- Overheating:
- Ensure adequate ventilation around the power supply. Do not obstruct airflow.
- Verify the load is not exceeding the rated power of the unit.
- Check the ambient temperature.
If the problem persists after performing these checks, contact qualified service personnel or MEAN WELL technical support.
10. Safety Information
WARNING: Risk of electric shock. Installation and servicing should only be performed by qualified personnel.
- Always disconnect power before installation, maintenance, or troubleshooting.
- Ensure proper grounding of the unit.
- Do not operate the power supply beyond its specified ratings (voltage, current, temperature).
- Do not expose the unit to excessive moisture or extreme temperatures outside its operating range.
- Ensure all wiring complies with local and national electrical codes.
- This device is a Type HL LED Driver for use in Class I, Division 2 hazardous location luminaires. Adhere to all relevant safety standards for such environments.
11. Mechanical Specifications
The following diagrams provide the mechanical dimensions and outlines for different types of the ELG-75-C series power supplies. All dimensions are in millimeters (mm).
11.1 Blank-Type / D-Type and A-Type
Image 11.1: Mechanical drawings for Blank-Type, D-Type, and A-Type ELG-75-C series models, showing dimensions, case temperature measurement point, and the location of the internal potentiometer for A-Type.
11.2 B-Type / DA-Type
Image 11.2: Mechanical drawing for B-Type and DA-Type ELG-75-C series models, showing dimensions and dimming wire connections.
12. Warranty and Support
The MEAN WELL ELG-75-C700 LED Power Supply comes with a 5-year warranty from the date of purchase. This warranty covers defects in materials and workmanship under normal use.
For warranty claims, technical support, or further assistance, please contact your authorized MEAN WELL distributor or visit the official MEAN WELL website for contact information.
Official Website: www.meanwell.com
