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LED Outdoor Light Driver Replacement: A Step-by-Step Guide


Outdoor LED lights, including streetlights, floodlights, and garden lights, rely on LED drivers to provide consistent power. Over time, these drivers may wear out or fail, affecting the performance of your outdoor lighting. Whether you’re upgrading to more efficient drivers or troubleshooting issues, knowing how to replace LED drivers is essential. In this guide, we’ll walk you through the process of replacing LED drivers for outdoor lights.


Signs It’s Time for Replacement

Before we dive into the replacement process, recognize these signs that indicate your LED driver needs replacement:

  1. Dimming Lights: If your outdoor LEDs are dimmer than usual, it could be a failing driver.
  2. Flickering or Inconsistent Light: Fluctuations in brightness or flickering indicate driver issues.
  3. Complete Failure: When your outdoor lights stop working altogether, the driver may be at fault.


Replacement LED outdoor light Driver Checklist

When replacing the LED driver on a street light, follow these steps to ensure a safe and successful installation:

  1. Safety First:
    • Turn off the Power: Before starting any work, turn off the power supply to the street light. This ensures your safety during the replacement process.
    • Wear Protective Gear: Use appropriate safety gear, such as gloves and safety glasses, to protect yourself.
  2. Access the Street Light Fixture:
    • Remove any covers or panels to access the LED driver inside the street light housing.
    • Depending on the design, you may need a ladder or lift to reach the fixture.
  3. Disconnect the Old Driver:
    • Unscrew the old LED driver from its mounting point.
    • Carefully disconnect the wires from the back of the old driver.
    • Completely remove the old driver from the fixture.
  4. Note Wire Connections:
    • Take note of the wire connections and their locations for reference when installing the new driver.
    • Properly labeled wires will make the replacement process easier.
  5. Choose the Right Replacement Driver:
    • Consider the following factors:
      • Input Voltage: Ensure the replacement LED driver’s input voltage matches the original driver’s specifications (e.g., 120VAC or 277VAC).
      • Output Voltage/Current: Match the output voltage and current requirements of the LED module.
      • Constant Current or Constant Voltage: Determine whether your original driver operated in constant current or constant voltage mode.
  6. Install the New Driver:
    • Connect the wires to the new driver following the original configuration.
    • Secure the new driver in place using appropriate mounting hardware.
  7. Ground Wire Connection:
    • Locate the ground wire (usually green or bare copper) in the street light fixture.
    • Connect the ground wire from the new LED driver to the ground wire in the fixture using wire connectors or crimp connectors.
    • Ensure a solid and secure connection.
    • led driver wires
  8. Test the System:
    • Turn the power back on and verify that the street light functions properly.
    • Check for consistent light output and any signs of flickering or abnormal behavior.


Choose the Right Replacement LED Driver

The power quality of LED street lights is crucial for long-term stable operation. In addition to the factors mentioned earlier, the following are other factors that should be considered when choosing a high-quality LED street light power supply:

1. Voltage selection:

The output voltage range of the LED power supply is best to reach 80%-120% of the rated voltage of the LED lamp.

The minimum value of the output voltage must be less than 90% of the rated voltage of the LED lamp, and the maximum value of the output voltage must be greater than 110%. Otherwise, differences and inconsistencies in lamp bead parameters will cause the LED lamp to fail to light up.

When we replace the led lights, we generally need to determine the voltage of the modules used and the actual power of the lamps, and then decide on the model selection of the power supply.

For example, A street light power required by customers is 150W, use 35V light source modules. So the output voltage range of the power supply we choose must be around 35V.

In this case, we can use BEON’s BA-8045-150W-V36, it’s voltage range is between 30-36V , so can be adapted to customer’s street lights.


If the street light is using 48V LED module for 200W, so led driver output voltage must be around 48V.

In this case, we can use BEON’s BA-706D-200W. Its maximum voltage is 56V and the range is 28V-56Vso this 48V can be used.


But if a customer must use Philips’ purple-edge power supply, such as this Philips 150W, its output voltage is very high, between 71-214VThen 48V module cannot be used.

Therefore we need to connect modules to it. For example, for 150W,we use 3 modules as a series line and string it together.

One string of 48V x 3 strings = 144V, which can be used in the power supply area of 71-214V.

philips 150w

2,Current selection:

The output current of the LED power supply is preferably about 90% of the rated current of the LED lamp. Do not exceed the rated current of the LED lamp, otherwise the life of the LED lamp will decrease sharply.
The current accuracy is best within plus or minus 5%, and the higher the accuracy, the better.

In addition to voltage selection, another parameter when selecting a power supply is the current value.

For example: the 3030 led modules are generally 30V, and the 5050 modules are generally 48V. There are also 36V, 42V, 48V, 54V, 60V modules on the market, etc. No matter which voltage module is used, it can be easily solved by using a simple formula when selecting the power supply.

For example, a customer needs a 200-watt lamp. At this time, we can first determine the power supply. It is a 200W model. Then the next step is to select the led module.

If the customer needs a 54V led module, we can use the formula power multiplied by 0.9 and divided by the module voltage, which is equal to the current. value is equal to a set value. This set current value is the current we need.

So 200W X 0.9 /54V =3.33A current. This current is the actual current value of 200W

Then, we can use BEON’s BA-706D-200W, which current value between 3.3A-6.0A, so the 3.33A we just calculated is in the range. Therefore it can meet the actual power usage.

If it is not in this range, 200W led driver must be selected again. Therefore, the voltage value of the module and the actual current value are both key conditions for using the power supply.

We need to determine our voltage value range when choosing a power supply, and then determine the current value range.

3, Efficiency and Power factor:

Choose a high-efficiency LED power supply to reduce energy loss and fixture heating.
The power factor should be high to reduce pollution to the power grid.

Use Beon led driver can support you get high efficiency and high power factor.

beon led driver high efficiency 95%
beon led driver high efficiency 95%


4, Protective Function:

Make sure the power supply has overcurrent, overvoltage, overload, overtemperature and other protection functions to protect the LED lights and the power supply itself.

  1. Overcurrent Protection (OCP):
    • Purpose: Prevents damage due to excessive current flow.
    • Function: If the output current exceeds a specified limit (ILIM), the protection circuit reduces the output voltage and current, limiting power consumption and protecting both the IC and the load.
  2. Overvoltage Protection:
    • Purpose: Safeguards against voltage spikes.
    • Function: Detects and suppresses overvoltage transients, preventing the device from reaching unsafe temperatures.
  3. Overload Protection:
    • Purpose: Prevents overheating caused by sustained overcurrent.
    • Function: Monitors the current flow and disconnects the load if it exceeds safe limits for a specific duration.
  4. Overtemperature Protection:
    • Purpose: Ensures the device operates within safe temperature limits.
    • Function: Monitors the temperature and reduces power consumption or shuts down the device if it exceeds the specified threshold.
  5. Other Protection Functions:
    • Short-Circuit Protection: Detects and responds to short circuits in the load.
    • Reverse Polarity Protection: Guards against incorrect polarity connections.
    • Transient Voltage Suppression (TVS): Suppresses voltage spikes caused by lightning or other transient events.

Remember that proper coordination and setting of these protection functions are crucial for reliable LED street light operation. Ensuring the right balance between protection and performance is essential for maintaining efficient and safe lighting systems. 🌟💡

If you need to further learn about Beon led drivers, welcome to contact use for more technical exchanges.

** Email: manager@beonled.com

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