UK Why one LED driver is using less Wattage

[eleFor2]

Welcome, I have two desks and each of them have the same setup, in terms of the amount of LED strips, the amount of LEDs (I counted), but only different is LED Driver. So:

Setup 1:

• LED Driver (Ecopac 24W IP67 Rated LED Driver (EPV-24 Series)) - 24V
• 4 LED strips
• Uses 1.3W

Setup 2:

• LED Driver (Mean Well NPF-40-24 (NPF-40 Series)) - 24V
• 4 LED strips (Same ones like Setup 1)
• Uses 0.7W

The efficiency mentioned in Setup 1 for LED driver is about 82%, whereas Setup 2 LED Driver 88%, I don't think that's a huge contributing factor?

Could someone educate me why there is such a big difference in energy use between these two? Almost halved!

Would that be surprising to anyone? Should I have done anything differently in terms of testing? I measured from the AC socket directly

 

[Jock from the north]

Welcome, I have two desks and each of them have the same setup, in terms of the amount of LED strips, the amount of LEDs (I counted), but only different is LED Driver. So:

Setup 1:

• LED Driver (Ecopac 24W IP67 Rated LED Driver (EPV-24 Series)) - 24V
• 4 LED strips
• Uses 1.3W

Setup 2:

• LED Driver (Mean Well NPF-40-24 (NPF-40 Series)) - 24V
• 4 LED strips (Same ones like Setup 1)
• Uses 0.7W

The efficiency mentioned in Setup 1 for LED driver is about 82%, whereas Setup 2 LED Driver 88%, I don't think that's a huge contributing factor?

Could someone educate me why there is such a big difference in energy use between these two? Almost halved!

Would that be surprising to anyone? Should I have done anything differently in terms of testing? I measured from the AC socket directly

Try testing direct current using a dc multi metre capable of measuring current .with led strips it's not a case of placing your multi metre directly on dc terminals there is some additional disconnection to do of led connectors the current will need to be meusured in series. I assume from your post you have some back ground testing knowledge .

 

[Jock from the north]

Try testing direct current using a dc multi metre capable of measuring current .with led strips it's not a case of placing your multi metre directly on dc terminals there is some additional disconnection to do of led connectors the current will need to be meusured in series. I assume from your post you have some back ground testing knowledge .

You mention meanwell depending on led stripps and length using a parrallel method to connect them would reduce volt drop and according to ohms law v=ir .meanwell are very good drivers /controllers

 

[eleFor2]

I don't have much testing knowledge, just beginner. I tested using DC multimeter by getting in between LED driver and 1-3 splitter for both setups:

• 28.3mA (Ecopac)
• 20.6mA (MW)

This is how both setups are connected btw (in parallel), the strips are particularly short:

- LED Driver
- 1 to 3 splitter
- LED Strip (4cm)
- LED Strip (8cm)
- LED Strip (4cm)

• wire between LED driver and splitter is manufactured one that came with Driver, it measures around 20cm
• wire between splitter and led strips are max of 1m

 

[Jock from the north]

Try testing direct current using a dc multi metre capable of measuring current .with led strips it's not a case of placing your multi metre directly on dc terminals there is some additional disconnection to do of led connectors the current will need to be meusured in series. I assume from your post you have some back ground testing knowledge .

 

[Jock from the north]

Led manufacturers have a tendency to be widely inaccurate about the lumen out put,power output of there drivers not to mention most choose to ignore the fact the driver should have at least 20 percent capacity other wise it over heats .I put up 3 58 watt led battens not long ago and driver was 60 watt.6 months down the line driver heats up and its a disco .
I've tested dc current on some led lights and it dosnt come close to what the actual current should be if calculated