ApfelStrudel
Well-Known Member
Okay, I've mixed it up with the CV/CC drivers. But jt should work with 13 strips is series even with up to 1150mA.
But I've recognized another problem with long series connections.
I have an HLG-240H-C1050B which I have used with 6 Vero29gen6's and maximum was ~245w with 262w at the wall.
Later I wanted to use the same driver but for 20 2ft F-strips connected in a 10s2p series-parallel circuit.
Because of the maximum current of ~1130mA I've used 565mA to calculate the strips voltage( Sammy calculator and datasheet). According to the datasheet the voltage at 565mA should be around 22-22,2v(with lower case temps in mind, nominal kjs 23v@1120mA).
So normally 222v with 10 in series at 565mA but I don't got the calculated output with open dimmer wires. Instead of ~250w net and ~265 at the wall I only got ~217w at the wall. So don't know exactly whats going on here but maybe its because of the tiny connectors. Someone told me the strips would have a 50v limit but I've not found that mentioned in the datasheet. At least its not mentioned in C, H, Q or H-influx datasheets.
I've used the same 1,5mm² single core wire I've used for my other lights and it's the thickest diameter fitting inside the connectors. All connections are double checked three times and the driver was placed in an ventilated housing directly on the backside of the fixture. So wires between driver and first/last strip were also pretty short.
217 instead of 265w at the wall is a huge difference and even 20 of this tiny connectors in series should not cause such a big difference(I believe the are rated with 300v).
Would not try the driver anyway to compensate a certain voltage droop.. in a series circuit?
I've also tested the voltage of each parallel string, changed the strips back and forth and ended up with a difference below 0,1v. So one string has 222 and the other around 221,9v ... That's also not enough to cause such a big loss.
Can you say whats causing this issue?
13 strips per diver was my plan
What are you measuring power from the wall with? Same happens when I measure power draw on LPC drivers but not on HLG-120H-C1050B or HLG 150H-24A. Also with PLC drivers the device that measures power draw and also reads power factor is giving me strange readings on power factor. When measured on COBs I'm getting voltage and current right where it should be and my connections are more than adequate, definitely no losses there.