To cross reference an existing driver for replacement, there are 4 pieces of information that you
1. In what type of fixture is the driver being replaced?
While you may not need the exact dimensions of the driver, it’s important to take note of the
type of fixture the driver that was installed. Drivers in Linear fixtures, Track and Downlight
(compact) fixtures, Outdoor fixtures and Sign/Channel Lighting have generally the same
driver size and form factor. Taking a quick measurement within the fixture will also give you
the maximum size the replacement driver can be to ensure that it will fit properly.
2. Is the driver Constant Current or Constant Voltage?
Constant Voltage drivers are often used in outdoor fixtures, signs, and channel lighting
while Constant Current drivers are found in everything from outdoor, general indoor,
specialty, and architectural lighting. If there is a question, Constant Voltage drivers list a
specific voltage like 12 or 24V while Constant Current lists voltage as a range (examples:
2-42V, 14-30V, 8-19V, etc.) and a specific output current.
3. What are the Output specifications?
The three specifications to look for are Current (mA), Max Power (W), and the Voltage
Equivalent to specified or up to 10% less than the mA rating. Any less than
that, and there may be a detectable difference to the light level in the fixture as compared
to the other installed fixtures. If the driver has been factory tuned, Universal offers a range
of pre-tuned drivers that are available in increments of 50mA.
Max Power (W):
Equivalent to what is specified or higher. Max Power refers to the available
amount of Watts, not necessarily what is used by the LED modules.
Output Voltage (V):
Refers to the operable range output of the LED Driver. This may be
listed only as a max voltage.
4. Are there any control requirements?
Most of the Universal LED drivers are equipped with 0-10V dimming. A dimming driver can
always be used for applications where no dimming is required.